Setting global limits on the use of VMware resources

Article:HOWTO70967  |  Created: 2012-02-08  |  Updated: 2013-10-02  |  Article URL http://www.symantec.com/docs/HOWTO70967
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Setting global limits on the use of VMware resources

You can use the NetBackup Resource Limit dialog to control the number of simultaneous backups that can be performed on a VMware resource type. The settings apply to all NetBackup policies.

For example, to avoid overloading the ESX server, you can place a limit on the number of concurrent backup jobs per ESX server. To control I/O overhead on the datastore's array, you can limit the number of concurrent backups per datastore.

Note:

The Resource Limit screen applies only to policies that use automatic selection of virtual machines (Query Builder). If virtual machines are selected manually on the Browse for Virtual Machines screen, the Resource Limit settings have no effect.

Note:

To limit the number of simultaneous jobs per policy, use the Limit jobs per policy setting on the policy Attributes tab. The effect of this option depends on how the policy selects virtual machines.

See Limit jobs per policy on the Attributes tab (for VMware).

To set limits on the use of VMware resources

  1. In the NetBackup Administration Console, click Host Properties > Master Servers and double-click the NetBackup master server.

  2. In the Properties screen, scroll down in the left pane and click Resource Limit.

  3. Click in the Resource Limit column to set the maximum NetBackup usage for the resource type. The settings apply to all policies.

    For each resource type, the default is 0, (No Limit). A resource limit of 4 for datastore means that NetBackup policies can perform no more than four simultaneous backups on any particular datastore.

    Table: Resource types and limits describes the limits:

Table: Resource types and limits

Resource type

Resource limit

vCenter

The maximum number of simultaneous backups per vCenter server.

snapshot

The maximum number of simultaneous snapshot operations (create or delete) per vCenter.

Cluster

The maximum number of simultaneous backups per VMware cluster.

ESXserver

The maximum number of simultaneous backups per ESX server.

VMXDatastore

The maximum number of simultaneous backups per vmx datastore.

See NetBackup for VMware terminology.

Datastore

The maximum number of simultaneous backups per datastore.

DatastoreFolder

The maximum number of simultaneous backups per datastore folder.

DatastoreType

The maximum number of simultaneous backups per datastore type.

VMXDatastoreNFSHost

The maximum number of simultaneous backups per NFS host of the vmx datastore.

DatastoreNFSHost

The maximum number of simultaneous backups per NFS host of the datastore.

DatastoreCluster

The maximum number of simultaneous backups per datastore cluster.

Other resource-related considerations may be of interest.

See NetBackup for VMware best practices.

See Configuring a VMware policy from the Policies utility


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