Subclient Properties (IntelliSnap Operations)

IntelliSnap Backup with hardware Snap Engines | IntelliSnap Backup with Data Replicator

Use this tab to enable IntelliSnap backup and to establish the options for IntelliSnap backup operations, for the selected subclient. These options are available if you select Data Replicator as the Snap Engine. Note that all the options described in this help may not be available and only the options displayed in the dialog box are applicable to the agent for which the information is being displayed.

IntelliSnap

Specifies whether IntelliSnap backup for the selected subclient is enabled or disabled.

Available Snap Engines

Lists the available snapshot engine vendors. To select a snapshot engine vendor, click the pull-down arrow and click the one that you want to use.

• Manage Array

Click to access the Array Management dialog box, which enables you to add or modify access information for a array.

Use Proxy

Use this list to specify the name of the proxy server that will be used for performing the IntelliSnap backup operations like mounting the snapshot and cataloging. If the Use Separate proxy for Backup Copy option is not selected, this proxy will be used for performing backup copy operations such as mounting the snapshot and copying the data to any media.

Use Separate proxy for Backup Copy

Select to use a separate proxy server for performing backup copy operations such as mounting the snapshot and copying the data to any media.

• Proxy

  Use this list to specify the name of the proxy server for performing backup copy operations such as mounting the snapshot and copying the data to any media.

• Snap mount proxy

  Use this to set the snap mount proxy on an IntelliSnap enabled vmGroup. This is only applicable for Hyper-V for the following:

  • Mounting snapshot during cataloging phase of IntelliSnap Backup.

  • Performing backup copy operations such as mounting the snapshot and copying the data to any media.

  • Mounting snapshot during virtual machine file and Full VM restores performed from the Command Center.

    Note

    
    :

    • Setting the Use Proxy option from the Command Center updates the Use Proxy and the Use Separate proxy for Backup Copy properties of the subclient.

    • If you set a different value for Use Separate proxy for Backup Copy option in the CommCell Console, it will be reflected in the snap mount proxy of the Command Center and will be used for mounting the snapshot during restores (which are performed from Command Center).

    • Snap mount proxy will not be used to mount snap snapshots during file-level restores. The Browse MediaAgent option selected during the Browse and Restore functions will be used for a mount snapshot.

Use source if proxy is unreachable

If the proxy client is unreachable, use the source computer, which is typically the client computer or the MediaAgent used during snap backup of the job.

Wait for snapshot to complete

This check box applies to Amazon RDS subclients. Amazon RDS backup job are asynchronous, so the job progress displays 100% when the software sends the backup request. Select this check box to synchronize the Commvault job progress with the Amazon web console.

Use RMAN for backup copy

Select to use RMAN for copying the data to the media. When data is moved from snap to media, the RMAN backup interface is used for block level backup operations. Also, RMAN is required in the case of Automatic Storage Management (ASM) Oracle Databases, since ASM data is not available on the file system.

Enable Snap Integrity Check

You can configure to run integrity check of a hardware snap during an IntelliSnap backup.

When the Snap Integrity Check is enabled, the following steps are performed automatically during an IntelliSnap backup:

1. The database is placed in a quiesced state.

2. A snapshot is created for data volumes.

3. The database is placed in a unquiesced state.

4. The snapshot is mounted on source and cataloging of datafiles is performed from mounted snapshot. This verifies whether all the datafiles are properly captured during an IntelliSnap backup.

   The RMAN catalog datafilecopy will check the datafile header and verify its authenticity before cataloging it.

5. The snapshot is created for log volumes

6. The snapshot is mounted on source and cataloging is performed for mounted log files.

When this is not enabled, you do not see the mount and catalog snap files happening in the Oracle RMAN.log.

The default is disabled.

Use Oracle VSS Writer

Select to initiate Oracle IntelliSnap backup operation using the Microsoft Volume Shadow Copy service, Oracle VSS writer and VSS provider. The VSS provider and VSS writer service for the Oracle database need to be installed on the Oracle client machine and must be running in order to perform this type of backup.

Use RMAN for Tape Movement

Select to use RMAN for movement to media operations.

Allow multiple data readers within a drive or mount point

Specifies whether multiple data reads are allowed for a single physical drive or mount point during backups on this subclient. It is recommended that this option is selected for specialized hardware such as RAID, or possibly in the case of spanned volumes.

Number of Data Readers for Backup Copy

Use this space to specify the number of simultaneous backup data streams allowed for this subclient, during the movement to media operation. For best performance, this should be set no higher than the number of physical drives that hold this subclient's data, except for specialized hardware such as RAID.

Use Journaling

This option enables the use of full data journaling necessary to preserve the consistency of the database during data replication.

Use snapshot on the source to replicate data

This option enables the use of the snapshot located on the source client to replicate data.

Minimum size of file using hash comparisons

The minimum size of the file (in KB) that would be picked up for hash comparisons during data replication. Files less than the minimum size would be replicated without comparison.

Block size to use for hashing

Block size (in KB) used in hash comparisons.