Filesystem Extension - Policy window

Use the Policy tab to specify how filesystems will be extended and to enable LUN provisioning.

Amount to Extend

Field Name

Description

Add

Enter a specific amount by which filesystems selected for this policy will be extended.

Make Freespace

Enter the amount of freespace that will be created in the filesystems selected for this policy.

Make Capacity

Enter the amount of total capacity that will be created in the filesystems selected for this policy.

Governor

Field Name

Description

Set Maximum Capacity

If you chose Add or Make Freespace under Amount to Extend, you can enter a maximum extension size. If the maximum size is reached for a filesystem, the filesystem will be removed from the policy and an alert will be triggered.

LUN Provisioning

Field Name

Description

Enable Automatic LUN Provisioning

If an ESS subsystem is available to a filesystem host, you can select this option to provision additional LUNs for filesystem extension.

Login information must be specified for the CIM/OM associated with the ESS subsystem.

Note: For filesystem hosts running Sun Solaris, additional LUNs can be provisioned, but you must reboot the host machine to complete the filesystem extension.

Preferred Minimum Size LUN to Create

Enter a preferred minimum size for new LUNs. If no preferred size is entered, the Amount to Extend specified for the filesystem will be used.

Limit Scope of LUN Provisioning

Select this option to model newly created LUNs on existing LUNs. If you do not limit the scope, new LUNs can be created anywhere on the ESS subsystem.

Model for New LUNs

Select one of the following options:

  • Model new LUNs on others in the volume group of the filesystem being extended.

  • Model new LUNs on others on the same host as the filesystem being extended.

LUN Source

Select one of the following options:

  • Provision new LUNs within the same Storage Pool as the filesystem being extended.

  • Provision new LUNs within the same Storage System as the filesystem being extended.

Condition for Filesystem Extension

Field Name

Description

Extend Filesystems Unconditionally

Select this option to extend filesystems based only on the specified policy.

Extend Filesystems When Freespace is Less Than

Select this option to extend a filesystem according to the specified policy only when its freespace falls below a certain size. Enter the maximum amount of freespace that will allow the filesystem to be extended.

For more information, see Filesystem Extension.