Dell 34XX, 38XX, 32XX, 36XX manual Reduce Disk Pool Capacity, RemoveDrives

Reduce Disk Pool Capacity

Description

This command reduces the capacity of the disk pool by logically removing the physical disks from the pool. This command uses the Dynamic Capacity Reduction (DCR) feature, which enables you to remove selected physical disks from a disk pool and re-use the removed physical disks as needed.

The maximum number of physical disks that you can remove from a disk pool in a single DCR operation is 12. You cannot reduce the disk pool to below the minimum disk pool size.

Syntax

set diskPool [diskPoolName] removeDrives=(enclosureID1,drawerID1,slotID1

... enclosureIDn,drawerIDn,slotIDn)

Parameters

Parameter	Description
	The name of the disk pool for which you want to
diskPool	reduce capacity. Enclose the disk pool name in
	square brackets ([ ]).
	The physical disks that you want to remove from
removeDrives	the disk pool. For high-capacity expansion
	enclosures, specify the enclosure ID value, the
	drawer ID value, and the slot ID value for each
	physical disk that you want to remove. For low-
	capacity expansion enclosures, specify the
	enclosure ID value and the slot ID value for each
	physical disk that you want to remove. Enclosure
	ID values are 0 to 99. Drawer ID values are 0 to 4.
	Slot ID values are 0 to 31.
	Enclose the enclosure ID values, the drawer ID
	values, and the slot ID values in square brackets
	([ ]).

Notes

Each disk pool name must be unique. You can use any combination of alphanumeric characters, underscore (_), hyphen(-), and pound (#) for the user label. User labels can have a maximum of 30 characters.

You might want to remove selected physical disks from a disk pool if you need to create a separate group or remove unneeded capacity from the storage array. The removed physical disks become unassigned physical disks and the data that existed on them is redistributed across the remaining physical disks in the disk pool. The capacity of the disk pool is decreased by the capacity of the physical disks that you remove. Removing physical disks from a disk pool is always carried out as a background task and the

244