Specifying I/O Settings

You can specify data processing settings.

Consider the following:

• The Enable storage latency control option is included in the Veeam Universal License. When using a legacy socket-based license, Enterprise or higher edition is required.
• The Set custom thresholds on individual datastores option is included in the Veeam Universal License. When using a legacy socket-based license, Enterprise Plus edition is required.
• The Enable storage latency control option is not supported for vVols/vSAN storage.

To specify data processing settings:

1. From the main menu, select Options.
2. Click the I/O Control tab.
3. To control the I/O load on the production storage where VMs reside, select the Enable storage latency control check box. When you enable storage latency control, Veeam Backup & Replication monitors storage read latency on production datastores during data protection and disaster recovery activities. To monitor the storage latency, Veeam Backup & Replication uses real-time metrics from the hypervisor where VMs reside. By default, metrics from the hypervisor are collected every 20 seconds. These settings are inherited from VMware vSphere.

Specify two thresholds:

1. In the Stop assigning new tasks to datastore at field, specify the I/O latency limit at which Veeam Backup & Replication must not assign new tasks targeted at the datastore.
2. In the Throttle I/O of existing tasks at field, specify the I/O latency limit at which Veeam Backup & Replication must decrease the speed of data retrieval or writing to/from the datastore. When the I/O latency for this datastore reaches this value, the Veeam Data Mover working with this datastore will slow down data retrieval or writing.

The value in the Stop assigning new tasks to datastore at field cannot be greater than the value in the Throttle I/O of existing tasks at field.

You can set the I/O latency limit for every storage in the virtual infrastructure separately.

To set the I/O latency limit for every storage separately:

1. From the main menu, select Options.
2. Click the I/O Control tab.
3. Click Configure.
4. Click Add > Datastore, select the necessary datastore and click OK to add it to the storage list.
5. Select the added datastores in the list and click Edit.
6. Specify the I/O thresholds for the datastores.