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Replication

The InfiniGuard provides data replication capabilities that you can use as an integral part of a disaster recovery plan. Replication allows you to configure the InfiniGuard DDE to create a copy of your data on another InfiniGuard DDE system at scheduled intervals (or manually as needed).
In the event of a disaster in which the original data is lost, you can quickly recover the replicated data on the remote system, allowing your business to resume normal operations. Once the original system is available again, you can restore all data back to its original location.
Although you can use the InfiniGuard native replication service, we recommend using the DedupEngine replication service, as it is dedup-aware, encrypted and granular.

Note

To schedule replication for a share or partition, use the Configuration > Scheduler page (see Scheduling a Share or Partition for Replication). To limit the amount of network bandwidth used for replication, enable a constant throttle (see Enabling System Throttling ), or schedule replication throttling (see Scheduling Replication Throttling ).

Understanding Data Replication

During data replication, data is sent from one system (the source) to another system, usually in another location (the target). For example, you might replicate data from a branch office (the source) to a central office (the target).
Sources send replicated data, and targets receive replicated data. A target system can receive data from up to ten sources. A source system can send data to up to two targets. Finally, one system can act as both a source and a target.
Replication works only with deduplicated data, and data is compressed before it is replicated. Because of this, the amount of data transmitted between systems during replication is greatly reduced compared to the original amount of data stored. In addition, a data block is transmitted only if the target does not already have a copy of the block. Finally, data can optionally be encrypted before it is transmitted.
The InfiniGuard can perform the following types of replication:

Replication

Replication occurs when replication is enabled for a deduplicated NAS share or VTL partition and a replication schedule is configured (or manual replication is performed on a regular basis). For replication to occur, the source system must be configured to point to the target system. Similarly, the target system must be configured to accept data from the source system.
To optimize the replication process, deduplicated data is continuously sent in the background from the source system to the target system. However, a snapshot that preserves the file structure of your data is sent to the target system only when a scheduled or manual replication job occurs. A snapshot contains all of the information that is necessary to recreate a share or partition just as it was at the point in time when the snapshot was created.

Caution

A saved snapshot is necessary to recover your data at a later time. For this reason, it is not enough to simply enable replication for a share or partition. You must also configure a replication schedule (recommended) or perform manual replication on a regular basis to send snapshots of the share or partition to the target system.


If the source system ever becomes unavailable, you can recover the share or partition on the target system using a saved snapshot. After you recover a share or partition, it is recreated on the target system and is available for use. Once the source system becomes available again, you can perform a failback operation to restore the share or partition to its original location.

Directory/File or Cartridge Based Replication

Like replication, Directory/File or Cartridge Based Replication sends data from a NAS share or VTL partition to another system where it can be accessed. However, Directory/File or Cartridge Based Replication differs in a number of important ways:

  • Both replication and Directory/File or Cartridge Based Replication must be enabled for the share or partition.
  • A unique Sync ID is used to associate the replicated share or partition on the source system with the share or partition that will receive the replicated data on the target system.
  • You do not need to schedule or manually perform Directory/File or Cartridge Based Replication through the remote management console. Instead, replication is triggered when a file is closed or a period of time after it is modified (NAS shares), or when a tape cartridge is unmounted (VTL partitions).

Note

For CIFS/SMB shares, a file is replicated immediately after it is closed. For NFS shares, a file is replicated after it has been idle (not accessed) for several minutes.


Note

To optimize the replication process, deduplicated data is continuously sent in the background from the source system to the target system. Any remaining data is sent (along with metadata) at the time a file is closed or a tape cartridge is unmounted.


  • After files or cartridges are replicated using Directory/File or Cartridge Based Replication, they are automatically recovered on the target system and are immediately available for use. There is no need to first recover the share or partition to access its data.
  • Deletions are automatically propagated from the source system to the target system in order to free up space on the target. In addition, you can manually initiate a synchronization from the source system at any time. Synchronizing ensures that the contents of the source share or partition are exactly the same as the target share or partition.

Caution

Cartridge barcodes for all source systems that are replicating to the same target must be unique.


Note

If you delete a share configured for Directory/File Based Replication on the source InfiniGuard DDE, the share is not automatically deleted on the target DDE. If you do not want to retain the share on the target DDE, you can manually delete it.

OST Optimized Duplication

The InfiniGuard DDE can duplicate the data on an LSU (logical storage unit) to another location using the OST optimized duplication (OST replication) feature supported by Veritas NetBackup. If you are using Veritas NetBackup 7.6 or higher, you can configure an LSU for Automatic Image Replication.
For information about configuring and using OST optimized duplication and Automatic Image Replication, see Replicating OST Data.

Multiple Target Replication

The InfiniGuard DDE can send replicated data to multiple target systems. First, configure up to two replication targets (see Adding a Replication Target ). Then, for each share or partition, select which targets to replicate data to—one, both, or neither (see Enabling Replication For a Share or Partition).
Below are three possible scenarios in which multiple replication targets are configured.

All Shares or Partitions Replicate to Multiple Targets

For enhanced disaster recovery, all shares or partitions on the InfiniGuard DDE are configured to replicate to multiple targets. In this scenario, even if one target system is lost, the other target system still retains a full copy of all data on the source InfiniGuard DDE.

Some Shares or Partitions Replicate to Multiple Targets

For increased flexibility, each share or partition on the InfiniGuard DDE is configured to replicate only to the targets where needed. In this scenario, shares or partitions fall into three categories:

  • Some shares or partitions replicate to Target 1. (They may also replicate to Target 2.) 
  • Some shares or partitions replicate to Target 2. (They may also replicate to Target 1.) 
  • Some shares or partitions are not replicated.

Performing Data Replication

The Replication page allows you to set up replication for NAS shares or VTL partitions and to replicate and recover data.
To access the Replication page, click the Replication menu.
The Replication page contains the following tabs:

Task Overview

Use the InfiniGuard DDE data replication features to perform the following tasks:

To replicate all data on a NAS share or VTL partition from a source system to a target system:

Task Overview: Setting Up and Performing Replication

  1. On the target system, add the source system to the list of allowed replication sources (see Adding a Replication Source).
  2. On the source system, specify the target system that will receive replicated data (see Adding a Replication Target).
    On the source system, create a new share or partition with deduplication enabled (see Adding a NAS Share or Adding a VTL Partition ).
  3. Enable replication for the new share or partition (see Enabling Replication For a Share or Partition).
  4. Before writing any data to the new share or partition, replicate the new share or partition (see Replicating a Share or Partition).

Infinidat recommends that you always replicate a new share or partition immediately after creating it. This establishes the initial data structure on the target system and greatly increases the speed of the first replication.

6. Choose one of the following methods to regularly replicate the new share or partition:

After replication, a snapshot is sent to the target system. You can use the snapshot to recover the replicated share or partition on the target system (see Task Overview: Recovering a Replicated Share or Partition) or restore the share or partition to its original location on the source system (see Task Overview: Performing a Share or Partition Failback).

Important Information: Setting up and Performing Replication

  • If you do not configure a replication schedule or manually replicate the share or partition on a regular basis, your data is not protected. While the InfiniGuard DDE continually sends data to the target system in the background to optimize the replication process, a snapshot that preserves the complete structure of your data is sent to the target system only when a scheduled or manual replication job occurs. If you do not regularly and frequently replicate your data as described in Step 6 above, it cannot be restored at a later time.
  • If a replication is not scheduled or run manually, data is still continuously sent to the target once replication is configured on the source InfiniGuard DDE. This can potentially fill up the target InfiniGuard DDE.

Note

To limit the amount of network bandwidth used for replication, enable a constant throttle (see Enabling System Throttling), or schedule replication throttling (see Scheduling Replication Throttling).

Task Overview: Setting Up and Performing Directory/File or Cartridge Based Replication

To automatically replicate files or cartridges from a source system and immediately recover them for use on a target system:

  1. Perform the following steps on the target system:
    1. Add the source system to the list of allowed replication sources (see Adding a Replication Source ).
    2. Create a new share or partition with deduplication enabled (see Adding a NAS Share or Adding a VTL Partition).
    3. Enable Directory/File or Cartridge Based Replication for the new share or partition and specify the Sync ID (see or Configuring Directory/File or Cartridge Based Replication).
  2. Perform the following steps on the source system:
    1. Specify the target system that will receive replicated data (see Adding a Replication Target). Create a new share or partition with deduplication enabled (see Adding a NAS Share or Adding a VTL Partition ).
    2. Enable Directory/File or Cartridge Based Replication for the new share or partition and specify the Sync ID (see Configuring Directory/File or Cartridge Based Replication).

A file is automatically replicated when it is closed or a period of time after it is modified. A cartridge is automatically replicated after it is unmounted. After replication, the replicated files or cartridges are immediately available on the target system. There is no need to recover the share or partition to make the files or cartridges available. 

Caution

Cartridge barcodes for all source systems that are replicating to the same target must be unique.


Note

To limit the amount of network bandwidth used for replication, enable a constant throttle (see Enabling System Throttling), or schedule replication throttling (see Scheduling Replication Throttling).

Task Overview: Recovering a Replicated Share or Partition

If a NAS share or VTL partition is lost or damaged on the source system, you can recover it on the target system using a received snapshot. When you recover a share or partition, it is recreated on the target system just as it was at the point in time when the snapshot was saved.
To recover a replicated share or partition:

  1. On the target system, select a received snapshot and perform a recover operation (see Replication Receive - NAS or Recovering a Partition).

The share or partition is now available on the target system.

2. (Optional) Map your backup application to the recovered share or partition on the target system to continue making backups.

3. When the source system is operating correctly again, choose one of the following actions:

    • Failback the share or partition to restore it on the original source system (see Task Overview: Performing a Share or Partition Failback). Then, if necessary, map your backup application to the restored share or partition on the original source system.
    • Continue to make backups to the recovered share or partition on the original target system. In addition, set up replication to replicate the share or partition back to the original source system (see Task Overview: Setting Up and Performing Replication). In this scenario, the original source system is now the target, and the original target system is now the source.

Task Overview: Performing a Share or Partition Failback

If a NAS share or VTL partition is lost or damaged on the source system, you can failback the share or partition to the source system using a received snapshot on the target system. When you failback a share or partition, it is restored on the source system just as it was at the point in time when the snapshot was saved.
To perform a share or partition failback:

  1. On the original source system, add the original target system to the list of allowed replication sources (see Adding a Replication Source).

Note

For the purposes of failback, the original source system is now acting as a target because it will receive the snapshot from the original target system.

2. On the original target system, select a received snapshot and perform a failback operation pointing to the original source system, and then recover the share or partition on the original source system (see Performing a Failback For a Share or Performing a Failback For a Partition).

The share or partition is now available on the original source system.

3. (Optional) If necessary, map your backup application to the restored share or partition on the original source system.

Replication Send

The Replication Send page allows you to manage outgoing replication activity for NAS shares or VTL partitions. You can replicate shares or partitions on the InfiniGuard DDE (the source) to other InfiniGuard DDE systems (the targets). You can also schedule replication, and view the status of current and recent replication jobs.

Note

Before you can replicate shares or partitions, you must specify a replication target.


To access the Replication Send page, click the Replication menu, and then click the Send tab.

Replication Jobs List

The Replication Jobs list displays replication statistics for all NAS shares or VTL partitions on the InfiniGuard DDE that are eligible for replication. To be eligible for replication, a share or partition must have data deduplication enabled at the time it is created.

Note

For information about creating NAS shares or VTL partitions.

The Replication Jobs list displays the following information:

Note

Click the arrow next to Shares or Partitions to display all shares or partitions in the list. Alternately, click the plus [ + ] or minus [ - ] icons to show or hide all shares or partitions.


NAS/VTL
- The name of the share or partition. Hold the cursor over the name to display detailed information about the share or partition.

Note

If multiple targets are configured for a share or partition, click the arrow next to the share or partition to view all targets.


Replication - The replication state (On or Off). Click the toggle switch to turn replication on or off for the share or partition.

Note

Clicking the toggle next to Shares or Partitions will turn replication on or off for all shares or partitions.


Replication Jobs Information

Description

Target

The hostname or IP address of the configured replication target. If the share or partition is configured to replicate to multiple targets, click the arrow next to the share or partition name to display all targets.

Sync ID

The Sync ID of the share or partition if Directory/File or Cartridge Based Replication is enabled.

Last Job Type

The type of the most recent replication job (Replication or Synchronization).

Job Status

The status of the most recent replication job. Hold the cursor over the job status to display detailed job statistics.

Started

The time the most recent replication job was started.

Finished

The time the most recent replication job was completed.

Schedule

A watch icon displays if replication is scheduled for the share or partition, as well as the next scheduled event.

Replication Jobs Customization

You can customize the appearance of the Replication Jobs list in the following ways:

  • Click the top banner row of the list to collapse or expand the list.
  • Click the arrow to the right of a column heading and select Sort Ascending or Sort Descending to sort the rows in the table by that column.
  • To show or hide a column, click the arrow to the right of a column heading, and then click Columns. Select the check box to show a column, or clear the check box to hide a column. (The following columns are hidden by default: Original Data Size, Actual Data Sent, and Average Data Sent.)
  • To filter content in a column, click the arrow to the right of a column heading, and then click Filters. Type or select the desired filter. (If one row for a share or partition matches the filter, all rows for the share or partition are displayed.)

Replication and Synchronization Status

A replication job can have one of the following statuses:
In Progress The replication job is in progress.

In Progress The replication job is in progress. 

Partial

A replication job was partially completed. Generate a replication report to see the files that were not replicated.

Queued

The replication job is queued and will continue when the system is ready.

Success

The replication job was completed successfully.

Failed

The replication job was not completed.

A synchronization job can have one of the following statuses:

Queued

The synchronization job is queued and will continue when the system is ready.

Success

The synchronization job was completed successfully.

Recovering

The recover operation is in process.

Replicating

The replication operation is in process.

Failed

The synchronization job was not completed.

Enabling Replication For a Share or Partition

Enable replication for a NAS share or VTL partition to allow the data on the share or partition to be replicated to other InfiniGuard DDE (the targets). Disable replication if you do not want to replicate the InfiniGuard to other InfiniGuard Systems.

Note

To be eligible for replication, a share or partition must have data deduplication enabled at the time it is created.
To enable or disable replication for a share or partition:

1. Select the share or partition and click Configure.

The Share or Partition Configure window displays.

2. Select the Enable Replication check box to enable replication for the share or partition.

3. Or clear the Enable Replication check box to disable replication for the share or partition. Any jobs from that share or partition that are in progress or queued will transition to failure. Also, all replication job history for that combination of target and share or partition will be removed.

4. Select the check box for each replication target you want to replicate the share or partition to. (You must select at least one target.) When the share or partition is replicated, its data will be sent to all selected targets.

5. Click Apply.

Additional Information

  • Infinidat recommends scheduling replication to run after backups are complete. If you do not enable scheduled replication, replication will only occur if you manually replicate a share or partition or if you configure Directory/File Based Replication.
  • Disabling replication for a share or partition does not delete any scheduled replication events for that share or partition. If you no longer want to schedule the share or partition for replication, manually delete the schedule.

Configuring Directory/File or Cartridge Based Replication

Configure a NAS share or VTL partition for Directory/File or Cartridge Based Replication to automatically replicate files or cartridges to other InfiniGuard DDE (the targets). A file is automatically replicated when it is closed or a period of time after it is modified. A cartridge is automatically replicated when it is unmounted. After replication, the replicated files or cartridges are immediately available on the target systems. There is no need to recover the share or partition to make the files or cartridges available. Disable Directory/File or Cartridge Based Replication if you do not want to automatically replicate files or cartridges.
When you configure a share or partition for Directory/File or Cartridge Based Replication, you must specify a Sync ID. The Sync ID associates the share or partition on the source system with the share or partition on the target systems that will received the replicated data. The Sync ID for the source share or partition must match the Sync ID for the target share or partition.
If Cartridge Based Replication is enabled for a VTL partition, the following media behaviors apply:

  • When a cartridge is exported from the partition, the cartridge is deleted from the configured target systems.
  • When a cartridge is imported into the partition, the cartridge is replicated to the configured target systems.
  • When a cartridge is deleted on a source system, it is in the Unassigned partition, thus this action has no effect on Cartridge Based Replication activity.

To configure a source share or partition for Directory/File or Cartridge Based Replication:

1. If you have not already done so, configure the target share or partition on the target InfiniGuard DDE.

2. On the source InfiniGuard DDE, select the source share or partition and click Configure.

The Share or Partition Configure window displays .

3. If it is not already selected, select the Enable Replication check box to enable replication for the share or partition.

4. Select the Enable Directory/File or Cartridge Based Replication to target check box to enable Directory/File or Cartridge Based Replication for the share or partition.

Or clear the Enable Directory/File or Cartridge Based Replication to target check box to disable Directory/File or Cartridge Based Replication for the share or partition.

5. Enter a Sync ID in the box.

The Sync ID is used to identify the target share or partition that will receive replicated data from the source share or partition. The Sync IDmust be identical to the Sync ID of the target share or partition on the target system.

The Sync ID must contain no more than 32 characters (NAS share) or 12 characters (VTL partition) and can contain only alphanumeric characters, underscores, and hyphens. (An underscore or hyphen must not be the first character.)

6. Select the check box for each replication target you want to replicate the share or partition to. (You must select at least one target.) When the share or partition is replicated, its data will be sent to all selected targets.

Note

Directory/File or Cartridge Based Replication will be configured for all selected targets. You cannot configure one share or partition for multiple replication types.

7. Click Apply.


Note

After you configure a share or partition for Directory/File or Cartridge Based Replication, you should synchronize it to ensure it is in sync with the target share or partition.

Replicating a Share or Partition

Replicate a NAS share or VTL partition to send a snapshot of the share or partition to the target systems. A snapshot is required to recover the data on the targets at a later time. If you have not configured a replication schedule for a share or partition, replication only occurs when you manually initiate it.

Caution

Do not replicate a partition containing media in an Exported state.


To replicate a share or partition:

1. Select the share or partition to replicate.

If multiple targets are configured, click the arrow next to the share or partition to display all targets, and then select the desired target.

2. Click Replicate Now.

The status of the replication job displays in the Job Status column.

To cancel the replication job, select the share or partition and click Abort.

Synchronizing a Share or Partition

Synchronize a NAS share or VTL partition to synchronize its contents with the corresponding share or partition on the target systems. To synchronize a share or partition, it must be configured for Directory/File or Cartridge Based Replication.

Synchronizing a share or partition ensures that the contents of the source share or partition are the same as the target share or partition. The synchronization verifies that the same files or cartridges exist in both locations, and that no additional files or cartridges exist in either location.

You should perform a synchronization in any of the following situations:

  • When Directory/File or Cartridge Based Replication is first enabled for a share or partition.
  • If a Directory/File or Cartridge Based Replication job fails. 
  • If Directory/File or Cartridge Based Replication is disabled for a time and then is re-enabled.

Manually performing a synchronization is not necessary except in the cases described above. When synchronization is manually initiated for a share or partition, the replication queue for that share or partition is cleared. All file write and delete requests are queued after the synchronization, and they are not processed until the synchronization is complete. This can cause replication to appear to be slow, especially for a share or partition that is frequently accessed.

Caution

Before synchronizing a share or partition, make sure all media are unmounted and there are no active backup jobs to the share or partition. (After the synchronization reaches the Replicating state, backup jobs are allowed.)


Note

Even when replication is paused, the system continues to queue Directory/File or Cartridge Based Replication operations. Each time an operation is queued, the system logs an administration alert that reports the total number of queued Directory/File or Cartridge Based Replication requests.


Note

If a synchronization fails, make sure the target share or partition is unlocked.

To synchronize a share or partition:

1. Select the share or partition to synchronize.

If multiple targets are configured, click the arrow next to the share or partition to display all targets, and then select the desired target.

2. Click Synchronize Now.

The status of the synchronization job displays in the Job Status column.

To cancel the synchronization job, select the share or partition and click Abort.

Directory/File or Cartridge Based Replication Queue

The Directory/File or Cartridge Based Replication displays replication statistics for shares or partitions that are configured for Directory/File or Cartridge Based Replication.

To view the Directory/File or Cartridge Based Replication Queue:

1. Select a share or partition that is configured for Directory/File or Cartridge Based Replication.

If multiple targets are configured, click the arrow next to the share or partition to display all targets, and then select the desired target.

2. Click Queue.

The Directory/File or Cartridge Based Replication Queue displays the following information for the share or partition:


File/Directory or Barcode

The file/directory or cartridge to be replicated.

State

The replication state for the file/directory or cartridge.

Progress

The percentage complete for replication of the file/directory or cartridge.

Estimated Duration

The estimated time it will take to complete replication for the file/directory or cartridge.
Note: The estimated duration may display as unknown if replication has been very recently initiated. After the system has enough information to calculate a value, the estimated duration will display.


Additional Information

The contents of the Directory/File or Cartridge Based Replication Queue are dynamic. Because of this, statistics are subject to change if items are added to the queue.

The queue may show a large number of deletion entries after a single directory is deleted. This is expected behavior, and occurs because several recursive file or subdirectory deletions may be required.

3. To close the Directory/File or Cartridge Based Replication Queue, click the Close icon.

Scheduling a Share or Partition For Replication

When a share or partition is enabled for replication, it is important to regularly replicate the share or partition to the target systems. Infinidat recommends scheduling replication to run after backups are complete.

To schedule a share or partition for replication, click Scheduler. The Scheduler window displays.

For details about using the Scheduler to add or edit a replication schedule.

Target Systems List

The Target Systems list allows you to configure and manage replication targets on the InfiniGuard DDEs.

Replication Receive - NAS

The Receive NAS page allows you to manage incoming replication activity for NAS shares. You can recover a replicated share on the target system if the source system is unavailable. Once the source system becomes available, you can failback the share to make it available on the source system again.

Note

Before you can receive replicated shares, you must specify one or more replication sources (see Adding a Replication Target).
To access the Receive NAS page, click the Replication menu, and then click the Receive > NAS tab.

Tasks

Use the Receive NAS page to perform the following tasks:


Received Snapshots

The Received Snapshots page allows you to view and work with received snapshots. When a replicated NAS share is received from a source system, it is saved as a snapshot. The snapshot contains all of the data necessary to fully recover or failback the share to the point in time when the snapshot was saved.


Tasks

Use the Received Snapshots page to perform the following tasks:

Note

The target system will retain up to 10 replication snapshots (default setting) for each replicated partition. Once 10 snapshots have been saved, the oldest snapshot is deleted to make room for each new snapshot that is received. (To change the maximum number of snapshots retained for each partition, see Changing the Maximum Number of Snapshots).

Snapshots List

The Snapshots List displays all available snapshots that have been received from configured replication sources. Snapshots are grouped by NAS Share. To see all available snapshots for a partition, click the plus icon [+] next to the share name.

Recovering a Share

Recover a NAS share if the source system is unavailable and you need to access the share (for example, to continue performing backups). When you recover a share, you select a received snapshot. The InfiniGuard uses the snapshot to recreate the share on the target system just as it was at the point in time when the snapshot was saved.

Note

Before recovering a share, you must enable CIFS/SMB on the InfiniGuard DDE(see Windows Domain). Also, if the DDE is not using Active Directory, you must configure at least one workgroup user to own recovered CIFS/SMB shares (see Share Access).

To recover a share:

1. On the target system, select a snapshot in the Snapshots List and click Recover.

The Recovered Share Name page displays.

2. (Optional) In the Recovered Share Name box, type a new name for the recovered share. (The default name is the original share name.)

3. Click Apply.

The share is recovered on the target system. All data stored on the share at the time the snapshot was saved is available. The original export protocol of the share (NFS or CIFS/SMB) is retained in the recovery process.

Note

After you recover a share, if you want to continue backing up data to the share, you must remap your backup application to point to the target system instead of the source system.

Performing a Failback For a Share

Perform a failback of a NAS share if a source system that was previously unavailable becomes available again. When you failback a share, you select a received snapshot. The InfiniGuard DDE copies the snapshot from the target system back to the source system. You can then perform a recover operation to recreate the share on the source system just as it was at the point in time when the snapshot was saved.

Note

Before you can failback a share, on the original source system, you must add the original target system to the list of allowed replication sources (see Adding a Replication Source). This is because, during failback, the original target is acting as a source when it sends a snapshot to the original source.


To perform a share failback:

1. On the target system, select a snapshot in the Snapshots List and click Failback

The Failback Target page displays.



2. (Optional) In the Failback Jobsbox, type the hostname or IP address of a new destination system to failback the partition to. (The default destination is the original source system.)

Note

To use hostname format, you must specify at least one DNS IP address on the Network page (see Network).

3. Click Apply.

The snapshot is sent to the source system.

4. On the source system, in the Snapshots List, select the snapshot that was sent during the failback operation and click Recover.

The Recovered Partition Name page displays.

5. (Optional) In the Recovered Partition Name box, type a new name for the recovered share. (The default name is the original share name.)

6. Click Apply.

The share is recovered on the source system. All data stored on the share at the time the snapshot was saved is available.The original export protocol of the share (NFS or CIFS/SMB) is retained in the recovery process.

Note

If you previously remapped your backup application to a recovered share on the target system, after you failback the share, you must remap your backup application again to point to the source system.

Deleting a Snapshot

Delete a snapshot if it is no longer needed. After you delete a snapshot, it can no longer be used to recover or failback a NAS share.

Note

You cannot delete a snapshot if a failback operation is in progress for the snapshot. Wait for the failback operation to complete, or abort the operation.

To delete a snapshot:

  1. Do one of the following actions:
  2. On the target system, select a snapshot in the Snapshots List and click Delete.

Note

If you delete the last snapshot for a partition while replication for the partition (to this target) is still enabled, any replicated data not yet protected by a replicated share is not deleted. To delete this data, on the source system, disable replication for the partition before deleting the last snapshot.


3. Click Yes to confirm the action.

Recovery Jobs

The Recovery Jobs page allows you to view information about snapshot recover operations that were previously completed.

To access the Recovery Jobs page, on the Receive NAS page, click the Recovery Jobs tab.


The Snapshot Recovery Jobs section displays the following information about recovery jobs:

Original Share Name

The name of the share the snapshot was created from.

New Share Name

The name of the share the snapshot was recovered to.

Source

The hostname of the system that the snapshot was received from.

Started

The time the recovery job was started.

Finished

The time the recovery job finished.

Status

The status of the recovery job (Success, In Progress, or Failed).

To delete information for a recovery job, select it in the Snapshot Recovery Jobs list and click Delete Job Info.

Failback Jobs

The Failback Jobs page allows you to view information about snapshot failback operations that were previously completed. You can also abort a failback that is currently in progress.

To access the Failback Jobs page, on the Receive NAS page, click the Failback Jobs tab.

The Snapshot Failback Jobs section displays the following information about failback jobs:

Share Name

The name of the share the snapshot was created from.

Destination Systems

The hostname of the system that the snapshot was sent to.

Started

The time the failback job was started.

Finished

The time the failback job finished.

Status

The status of the failback job (Success, In Progress, or Failed).


Use the Failback Jobs page to perform the following tasks:

  • To delete information for a failback job, select it in the Snapshot Failback Jobs section and click Delete Job Info.
  • To abort a failback job that is in progress, select it in the Snapshot Failback Jobs section and click Abort.

Directory/File Based

The Directory/File Based page allows you to manage Directory/File Based Replication on the target system. You can configure a NAS share to receive Directory/File Based Replication data sent from a source system and view replication statistics for the share.

Note

For information about creating NAS shares, (see Adding a NAS Share).

To access the Directory/File Based page, on the Receive NAS page, click the Directory/File Base tab.

Directory/File Based Page

Tasks

Use the Directory/File Based page to perform the following tasks:

Shares Eligible to Receive Directory/File Based Data

The Shares Eligible to Receive Directory/File Based Data section displays information for all NAS shares on the InfiniGuard DDE that are eligible to receive Directory/File Based Replication data from a source share. To be eligible to receive Directory/File Based Replication data, a share must have data deduplication enabled at the time it is created.

The Shares Eligible for Replication section displays the following information:

Share Name

The name of the share.

State

The state of Directory/File Based Replication for the share (Enabled or Disabled).

Sync ID

The Sync ID used to identify the source share that will send replicated data to the share.

Access

The selected access option for the share (Locked or Unlocked).


Note

Click the Information button [i] next to a partition to display detailed information about the share and recent replication activity.


Configuring a Target Share for Directory/File Based Replication

Configuring a NAS share for Directory/File Based Replication enables the automatic replication of files and directories on the source partition to the target share. Before you configure a share on the source system for Directory/File Based Replication, you must configure a share on the target system to receive the replicated data from the source share. 


Note

For information about configuring Directory/File Based Replication on the source system, (see Configuring Directory/File or Cartridge Based Replication).


To configure a target share for Directory/File Based Replication:

1. Select the share and click Edit.

The Edit Share Settings page displays.

2. Select the Enable to receive Directory/File Based replication data check box to enable Directory/File Based Replication for the share.

Or clear the Enable to receive Directory/File Based replication data check box to disable Directory/File Based Replication for the share.

3.  Enter a Sync ID in the box.

The Sync ID is used to identify the source share that will send replicated data to the target partition. The Sync ID must be identical to the Sync ID of the source share on the source system.

4. Select an Access option:

  • Locked - The share is not allowed to receive new Directory/File Based Replication data. 
  • Unlocked - The share is allowed to receive new Directory/File Replication data.

Note

If a share configured for Directory/File Based Replication is locked on the target system, synchronization jobs may fail on the source system.

5. Click Apply.

Unpack Queue

Use the Unpack Queue to view Directory/File Replication statistics for data received from the source system.

To view the Unpack Queue, select a share and click View Unpack Queue.

The Unpack Queue displays the following information:

Barcode

The barcode of the file or directory to be replicated.

State

The replication state of the file or directory.

Click Refresh to update the statistics in the Unpack Queue. Click OK to return to the Directory/File Based page.

Replication Receive - VTL

The Receive VTL page allows you to manage incoming replication activity for VTL partitions. You can recover a replicated partition on the target system if the source system is unavailable. Once the source system becomes available, you can failback the partition to make it available on the source system again. 


Note

Before you can receive replicated partitions, you must specify one or more replication sources.


To access the Receive VTL page, click the Replication menu, and then click the Receive > VTL tab.

Tasks

Use the Receive VTL page to perform the following tasks:

  • View received snapshots and recover, failback, or delete snapshots.
  • Manage recovery jobs.
  • Manage failback jobs. 
  • Manage shares configured for Cartridge Based Replication.

Received Snapshots

The Received Snapshots page allows you to view and work with received snapshots. When a replicated VTL partition is received from a source system, it is saved as a snapshot. The snapshot contains all of the data necessary to fully recover or failback the partition to the point in time when the snapshot was saved.

To access the Received Snapshots page, on the Receive VTL page, click the Received Snapshots tab.


Tasks

Use the Received Snapshots page to perform the following tasks:

  • View information about received snapshots.
  • Recover a partition on the target system.
  • Failback a partition to the source system.
  • Delete a received snapshot.

Note

The target system will retain up to 10 replication snapshots (default setting) for each replicated partition. Once 10 snapshots have been saved, the oldest snapshot is deleted to make room for each new snapshot that is received. (To change the maximum number of snapshots retained for each partition).


Snapshots List

The Snapshots List displays all available snapshots that have been received from configured replication sources. Snapshots are grouped by VTL partition. To see all available snapshots for a partition, click the plus icon [+] next to the partition name.

The Snapshots List displays the following information about each snapshot:

Partition Name

The name of the partition.

Source InfiniGuard DDE

The hostname of the system that the snapshot was sent from.

Started

The time the most recent replication job was started.

Finished

The time the most recent replication job finished.

Status

The status of the most recent replication job (see Replication and Synchronization Status). Click the status to display detailed information about the most recent replication job.


Note

Click a column heading to sort the rows in the table by that column. Click the column heading again to reverse the sort order.



Recovering a Partition

Recover a VTL partition if the source system is unavailable and you need to access the partition (for example, to continue performing backups). When you recover a partition, you select a received snapshot. The InfiniGuard DDE uses the snapshot to recreate the partition on the target system just as it was at the point in time when the snapshot was saved. 


Note

To recover a partition, the target system must support the library emulation and drive type used in the original partition. For a list of the available library emulations and drive types on the target system, (see Adding a VTL Partition).


To recover a partition:

1. On the target system, select a snapshot in the Snapshots List and click Recover.

The Recovered Partition Name page displays.

2. (Optional) In the Recovered Partition Name box, type a new name for the recovered partition. (The default name is the original partition name.)

3. Click Apply.

The partition and its cartridges are recovered on the target system. All data stored on the partition at the time the snapshot was saved is available.

After recovering the partition, you must add tape drives to the partition. The tape drive type must be identical to the original partition so that the media is compatible. In addition, you must map the devices before the VTL partition is accessible.

If the partition contains media, you will only be able to select the highest capacity tape drive for that media type. For example, if the partition contains SDLT600 tape cartridges, you will only be able to select DLT-S4 tape drives when mapping devices to the recovered partition.


Additional Information

When a VTL partition is recovered on a target system, a new serial number is created for the partition.

After you recover a partition, if you want to continue backing up data to the partition, you must remap your backup application to point to the target system instead of the source system.


Performing a Failback For a Partition

Perform a failback of a VTL partition if a source system that was previously unavailable becomes available again. When you failback a partition, you select a received snapshot. The InfiniGuard DDE copies the snapshot from the target system back to the source system. You can then perform a recover operation to recreate the partition on the source system just as it was at the point in time when the snapshot was saved. 

Note

Before you can failback a partition, on the original source system, you must add the original target system to the list of allowed replication sources (see Adding a Replication Source). This is because, during failback, the original target is acting as a source when it sends a snapshot to the original source.


To perform a partition failback:

1. On the target system, select a snapshot in the Snapshots List and click Failback.

The Failback Target page displays.


2. (Optional) In the Failback Destination InfiniGuard DDE

Note

To use hostname format, you must specify at least one DNS IP address on the Network page (see Network).


3. (Optional) Leave the Use Encryption check box selected to enable encryption when sending the snapshot to the destination. Or clear the Use Encryption check box to disable encryption when sending the snapshot to the destination.

4. Click Apply.

The snapshot is sent to the source system.

5. On the source system, in the Snapshots List, select the snapshot that was sent during the failback operation and click Recover.

The Recovered Partition Name page displays.

6. (Optional) In the Recovered Partition Name box, type a new name for the recovered partition. (The default name is the original partition name.)

7. Click Apply.

The partition and its cartridges are recovered on the source system. All data stored on the partition at the time the snapshot was saved is available.

After recovering the partition, you must add tape drives and a robot to the partition, and you must map the devices before the VTL partition is accessible. If the partition contains media, you will only be able to select the highest capacity tape drive for that media type. For example, if the partition contains SDLT600 tape cartridges, you will only be able to select DLT-S4 tape drives when mapping devices to the recovered partition.


Additional Information

  • When a VTL partition is recovered on a target system, a new serial number is created for the partition.
  • If you previously remapped your backup application to a recovered partition on the target system, after you failback the partition, you must remap your backup application again to point to the source system.

Deleting a Snapshot

Delete a snapshot if it is no longer needed. After you delete a snapshot, it can no longer be used to recover or failback a VTL partition. 

Note

You cannot delete a snapshot if a failback operation is in progress for the snapshot. Wait for the failback operation to complete, or abort the operation (see Failback Jobs).
To delete a snapshot:
  1. Do one of the following actions:
  2. On the target system, select a snapshot in the Snapshots List and click Delete.


Note

If you delete the last snapshot for a partition while replication for the partition (to this target) is still enabled, any replicated data not yet protected by a replicated partition is not deleted. To delete this data, on the source system, disable replication for the partition before deleting the last snapshot.



3. Click Yes to confirm the action.

Recovery Jobs

The Recovery Jobs page allows you to view information about snapshot recover operations that were previously completed.

To access the Recovery Jobs page, on the Receive VTL page, click the Recovery Jobs tab.

The Snapshot Recovery Jobs section displays the following information about recovery jobs:

Original Partition Name

The name of the partition the snapshot was created from.

New Partition Name

The name of the partition the snapshot was recovered to.

Source

The hostname of the system that the snapshot was received from.

Started

The time the recovery job was started.

Finished

The time the recovery job finished.

Status

The status of the recovery job (Success, In Progress, or Failed).


To delete information for a recovery job, select it in the Snapshot Recovery Jobs list and click Delete Job Info.

Failback Jobs

The Failback Jobs page allows you to view information about snapshot failback operations that were previously completed. You can also abort a failback that is currently in progress.

To access the Failback Jobs page, on the Receive VTL page, click the Failback Jobs tab.

The Snapshot Failback Jobs section displays the following information about failback jobs:

Partition Name

The name of the partition the snapshot was created from.

Destination InfiniGuard DDE

The hostname of the system that the snapshot was sent to.

Started

The time the failback job was started.

Finished

The time the failback job finished.

Status

The status of the failback job (Success, In Progress, or Failed).


Use the Failback Jobs page to perform the following tasks:

  • To delete information for a failback job, select it in the Snapshot Failback Jobs section and click Delete Job Info.
  • To abort a failback job that is in progress, select it in the Snapshot Failback Jobs section and click Abort.

Cartridge Based

The Cartridge Based page allows you to manage Cartridge Based Replication on the target system. You can configure a VTL partition to receive Cartridge Based Replication data sent from a source system and view replication statistics for the partition.

Note

For information about creating VTL partitions, (see Adding a VTL Partition).


To access the Cartridge Based page, on the Receive VTL page, click the Cartridge Based tab.

Tasks

Use the Cartridge Based page to perform the following tasks:

Partitions Eligible to Receive Cartridge Based Data

The Partitions Eligible to Receive Cartridge Based Data section displays information for all VTL partitions on the InfiniGuard DDE that are eligible to receive Cartridge Based Replication data from a source partition. To be eligible to receive Cartridge Based Replication data, a partition must have data deduplication enabled at the time it is created.
The Partitions Eligible for Replication section displays the following information:

Partition Name

The name of the partition.

State

The state of Cartridge Based Replication for the partition (Enabled or Disabled).

Sync ID

The Sync ID used to identify the source partition that will send replicated data to the partition.

Access

The selected access option for the partition (Locked or Unlocked).


Note

Click the Information button [i] next to a partition to display detailed information about the partition and recent replication activity.


Configuring a Target Partition for Cartridge Based Replication

Configuring a VTL partition for Cartridge Based Replication enables the automatic replication of cartridges on the source partition to the target partition. Before you configure a partition on the source system for Cartridge Based Replication, you must configure a partition on the target system to receive the replicated data from the source partition.

Note

For information about configuring Cartridge Based Replication on the source system, (see Configuring Directory/File or Cartridge Based Replication).

To configure a target partition for Cartridge Based Replication:

1. Select the partition and click Edit.

The Edit Partition Settings page displays.

2. Select the Enable to receive Cartridge Based replication data check box to enable Cartridge Based Replication for the partition.

Or clear the Enable to receive Cartridge Based replication data check box to disable Cartridge Based Replication for the partition.

3. Enter a Sync ID in the box.

The Sync ID is used to identify the source partition that will send replicated data to the target partition.

The Sync ID must be identical to the Sync ID of the source partition on the source system.

4. Select an Access option:

Locked - The partition is not allowed to receive new Cartridge Based Replication data.

Unlocked - The partition is allowed to receive new Cartridge Based Replication data.

If a partition configured for Cartridge Based Replication is locked on the target system, synchronization jobs may fail on the source system.

5. Click Apply.

Unpack Queue

Use the Unpack Queue to view Cartridge Based Replication statistics for data received from the source system

To view the Unpack Queue, select a partition and click View Unpack Queue.

The Unpack Queue displays the following information:

Barcode

The barcode of the cartridge to be replicated.

State

The replication state of the cartridge.


Click Refresh to update the statistics in the Unpack Queue. Click OK to return to the Cartridge Based page.

Replication Actions

The Actions page allows you to manage replication activity on the InfiniGuard DDE. From this screen, you can pause the replication service, enable the replication state and clear performance statistics.

To access the Actions page, click the Replication menu, and then click the Actions tab.

Tasks

Use the Actions page to perform the following tasks:

Replication Service

The replication service controls replication and failback traffic on the InfiniGuard DDE. You can pause each replication target independently.

  • Click Pause next to a target to pause all replication and failback traffic to that target.

If a replication job is currently in progress, the system continues to replicate the current block of data. The process of replicating the current block can take up to 15 minutes to complete. After the block has completed replication, the system pauses replication.

Note

If you pause a replication job that is in process, a Failure event is logged in the replication report (see Replication Reports).

  • Click Resume next to a target to resume all incoming and outgoing replication and failback traffic to that target.

    If a replication job was in progress when replication was paused, the replication job continues.

Replication State

The replication state applies to all NAS shares or VTL partitions on the InfiniGuard DDE that are eligible for replication (that is, all deduplicated shares or partitions).

Note

The Replication Actions page may appear busy for a few moments when enabling or disabling the replication state. Wait for the process to complete before performing other actions.

  • Click Enable to enable replication for all shares or partitions.
  • Click Disable to disable replication for all shares or partitions.

If a replication job is currently in progress, the system continues until the entire replication job is complete. After the replication job has completed, the system disables replication. The system will not be able to replicate data for any shares or partitions until you click Enable


Note

To disable replication for a single share or partition, select it on the Replication > Send page and click Edit. Clear the Enable replication and the Enable scheduled replication check boxes, and then click Apply. For more information, see Replication Send .

Replication Performance

The InfiniGuard DDE maintains cumulative performance statistics for send and receive replication activity. The statistics appear on the Home page and elsewhere. You can reset these statistics so the system will calculate them with new data going forward.

Clear Send Statistics

To clear send statistics, first select one or more targets to clear statistics for, and then click Clear Send. This resets cumulative performance statistics gathered while replicating shares or partitions to the selected target systems, or when sending a snapshot during a failback operation.

Clear Receive Statistics

To clear receive statistics, click Clear Receive. This resets cumulative performance statistics gathered while receiving replicated shares or partitions from source systems, or when receiving a snapshot during a failback operation.

Replication Reports

The Reports page allows you to generate and download a replication report. The report includes detailed information about all replication activity, including Directory/File or Cartridge Based Replication.

To access the Reports page, click the Replication menu, and then click the Reports tab.

Use the Reports page to perform the following tasks:

To generate a new replication report, click Generate New

  • To download the most recently generated replication report, click Download Current.
  • Save the replication report to your local workstation, and then unzip the downloaded file. The report consists of a ZIP file that contains multiple CSV (comma separated value) files. To view the CSV files, open them in a compatible spreadsheet application.


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