# Modifying the Number of Streams for Backups

You can modify the number of streams to increase the speed of backup operations for subclients. Configuring multiple streams for data backups allows the Commvault software to use the same number of streams during restore.

Commvault is using optimal number of streams for backup for new instances and new subclients by default. Option is controlled by Use optimal number of backup streams toggle. Number of streams to use is decided according size of biggest database in subclient, used for all contents of subclient during backup and being auto adjusted if subclient contents changes.

Size of biggest database | Number of streams
--- | ---
Less than 500 GB | 2 streams
Between 500 GB and 1 TB | 4 streams
Between 1 TB and 5 TB | 8 streams
Between 5 TB and 10 TB | 12 streams
Between 10 TB and 50 TB | 16 streams

Note

The modified number of streams will only be used for database backups. Two streams are used for log backups.

## Procedure

1. From the Command Center navigation pane, go to Protect > Databases.

   The Overview page appears.

2. On the Instances tab, click the SQL instance.

   The instance page appears.

3. On the Subclients tab, click the subclient.

   The subclient page appears.

4. In the Settings section, disable Use optimal number of backup streams toggle.

5. In the Settings section, beside Number of data streams, click the Edit button , and then enter the number of streams.

6. Click Save.

×

Loading...