Hp NetRAID-4M Controller Manual do Utilizador descarregar pdf (Página 41)

3-17

Working with Controllers

Note: The pause_io command is not available in the UNIX

environment.

To resume a controller’s I/O operations, use the controller

resume_io command, as in the following example. The

controller resume_io command also rescans the SCSI channels

on the controller, verifying currently connected disks and

recognizing new disks that have been added to the channels.

HPN0> controller resume_io

Executing: controller resume_io

Displaying and Enabling Controller Automatic

Spare

A spare disk is a disk that you configure to automatically recover

data from a failed partition/disk in a redundant container. To assign

one or more spare disks for a single container, you use the

container set spare command. To assign one or more spare

disks for all containers, you use the container set

global_spare command. Only mirror sets and RAID-5 sets use

the spare assignment if a disk fails. (Mirror sets and RAID-5 sets are

often referred to as redundant containers). The main characteristic of

these commands is that you must “manually” assign the spare disk

to one or more containers. In fact, you might consider the previously

described spare mechanism as “manually set spare”.

Note: Automatic spare allows you to replace a failed disk

with a replacement disk. The controller automatically

assigns the disk you insert as a spare disk without your

having to first assign it manually using the container

set spare or container set global_spare

command.

See Chapter 9, Modifying Containers, for more information on the

container set spare and container set global_spare

commands.

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Hp NetRAID-4M Controller Manual do Utilizador Página 41