HP NetServer AA 6200 Solution Release 3.0 Administrator's Guide

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Chapter 5 Commands

IOPn.Diskx Enable Mirrored Disk

Warning: Using this command may cause the other member of this mirror

set to become the target of a mirror set copy. Read all instructions

in this section before continuing.

This command attempts to enable a mirrored SCSI disk, indicated by

Diskx, that is disabled or

faulted. The disk is enabled without having to reboot the IOP under most circumstances.

A disk is faulted when it cannot respond to a read or write request. The disk’s failure to respond

to a read or write request may be transient or permanent. For example, a transient failure may

be the result of improper SCSI cable termination, resulting in an intermittent failure. A

permanent failure may be the result of a faulted disk component correctable only by disk

replacement.

This command is used to enable a disk that had a transient failure. If the disk has experienced a

permanent failure, it must be replaced. For instructions about how to replace a disk, refer to

Replacing a Failed Mirrored Disk on page 236.

A disk is also regarded as faulted if it failed during previous operation of its IOP. For example,

if a disk experienced read or write errors and was deemed to be faulted, then the faulted state

would remain across IOP reboots, even if you replaced the faulted disk. In this case, you must

explicitly enable the disk to clear its faulted condition.

Command IOPn.Diskx Enable Mirrored Disk

Console Syntax MTCCONS IOPn.Diskx Enable Mirrored Disk

Variables n – the ID number of the IOP (1 or 2)

x – the ID number of the SCSI disk

Results The disk remirroring process is initiated, if necessary. If a disk is enabled

and it becomes a mirror copy target, but the copy has not started yet, the disk

remains offline until the copy begins; it does not transition to online until the

mirror copy begins.

If this command does not succeed, examine the event log for details. You

must shut down the applicable IOP as part of the problem resolution process.