HP MSA 2040 CLI Reference Guide

96 Alphabetical list of commands

down disk

Description Simulates vdisk degradation due to loss of a disk. This command only applies to disks that are part

of fault-tolerant vdisks.

CAUTION: Do not use this command in a production system. Use only for testing. This command

will interfere with the operation of any volumes in the vdisk, potentially causing data loss.

When using this command, you should:

1. Run the show vdisks command to view all vdisks to determine whether the vdisk on which you

want to simulate failure is in a fault-tolerant state.

2. Run the down disk command.

3. Run the show disks command to ensure the disk is in a down state. A disk is in a down state

when How Used displays LEFTOVR and the Health is Degraded.

4. Run the show vdisks command again to verify the vdisk is degraded.

To use the disk, change the LEFTOVR status to AVAIL, using the clear disk-metadata

command.

Syntax

down disk

disks

Parameters

disks

IDs of the disks to force into a down state. For disk syntax, see "Command syntax" (page 20).

Example Force disk 1.4 into a down state:

# down disk 1.4

Info: Disk 1.4 was placed in a down state. (1.4)

Success: Command completed successfully. (2012-08-24 14:51:47)