Filesystem Extension - Provisioning window

Use the Provisioning tab to enable LUN provisioning and specify how it will be performed. It is not required that you enable provisioning as part of filesystem extension. Provisioning is an optional feature.

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

Note: LUNs can be provisioned for filesystem hosts running Sun Solaris, but the hosts must be specially configured to avoid a reboot after provisioning. See the appendix on configuring LUN provisioning for Sun Solaris in the IBM Tivoli Storage Resource Manager Installation Guide for instructions.

Field Name

Description

Enable Automatic LUN Provisioning

Select this option to enable LUN provisioning.

 

Create LUNs that are at least:

Enter a preferred minimum size for new LUNs. If you select this option, LUNs will not be created any smaller than the size you specify. If no preferred size is entered, the Amount to Extend specified for the filesystem will be used.

Note: The actual amount of filesystem extension can vary, depending on your environment. ESS subsystems require a minimum LUN size increment of 100 Mb. New LUNs will be rounded up to satisfy this requirement.

Model for New LUNs

Tivoli Storage Resource Manager models new LUNs on existing LUNs. At least one ESS LUN must be currently assigned to the managed host associated with the filesystem you want to extend.

Select one of the following options to limit the scope of LUN modeling:

  • 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

New LUNs can be created from the same storage pool as existing LUNs in the filesystem, or from any storage pool in the Enterprise Storage Subsystem.

Select one of the following options to limit the scope of LUN provisioning:

  • 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.

For more information, see Filesystem Extension.