You can configure multiple data streams per subclient for data protection operations. Using multiple streams, you can back up multiple paths in a subclient concurrently. Because multiple paths are backed up as part of the same job, the total number of running jobs is reduced. Multi-streaming is dependent on the number of available resources (drives) and the type of file server you are using. Configuring multiple streams is useful in the following scenarios:
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A subclient contains multiple data paths.
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A subclient is configured to back up the entire file server.
Considerations
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The actual number of concurrent backup streams employed during a backup job is limited by the number of subclient content paths. The number of available resources will be limited if other subclients are also using the same Storage Policy or a specific content path requires more time for backup.
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Isilon backups: You can use multiple streams to backup individual content paths to increase the speed of backup operations. For more information see, Isilon Multi-Streaming Backups.
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NetApp IntelliSnap backups: Subclients with multiple content paths on the same volume will only use a single stream per volume when cataloging the snapshot.
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NetApp C-mode backups: You can use multiple streams to backup individual content paths to increase the speed of backup operations. For more information see, NetApp C-Mode Multi-Streaming Backups.
Procedure
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From the CommCell Browser, go to Client Computers > client > NDMP > backup_set.
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In the right pane, right-click the subclient, and then click Properties.
The Subclient Properties dialog box appears.
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On the Advanced Options tab, in the Number of Data Readers box, type or select the number of data streams.
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To enable multi-streaming within an individual content path for NDMP NetApp C-mode clients, select the Allow multiple data readers within a content path check box.
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On the Storage Device tab, in the Storage Policy list, click a storage policy.
Note
The number of streams configured in the storage policy should be equal to or greater than the specified Number of Data Readers.
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Click OK.