Silicon Graphics InfiniteStorage 4000 Series, Настройка и обслуживание

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200 Recovery Operations
Changing the
Controller
Ownership
You can change which controller is the owner of a volume by using the
set
volume
command. The command takes this form:
set (allVolumes | volume [ volumeName ] |

volumes [ volumeName1 ... volumeNameN ] |

volume < wwID >) owner=(a | b)
Initializing a Drive
ATTENTION Possible loss of data access
– When you initialize a drive, all data on
the drive is lost.
You must initialize a drive when you have moved a drive that was previously part of a
multidisk volume group from one storage array to another. If you do not move the
entire set of drives, the volume group information and the volume information on the
drives that you move are incomplete. Each drive that you move contains only part of
the information that is defined for the volume and the volume group. To be able to
reuse the drives to create a new volume group and volume, you must delete all of the
old information from the drives by initializing the drive.
When you initialize a drive, all of the old volume group information and volume
information are deleted, and the drive is returned to an unassigned state. Returning a
drive to an unassigned state adds unconfigured capacity to a storage array. You can
use this capacity to create additional volume groups and volumes.
To initialize a drive, use this command:
start drive [ trayID,slotID ] initialize
In this command,
trayID
and
slotID
are the identifiers for the drive.
Reconstructing a
Drive
If two or more of the drives in a volume group have failed, the volume shows a status
of Failed. All of the volumes in the volume group are no longer operating. To return
the volume group to an Optimal status, you must replace the failed drives. Then, you
must reconstruct the data on the new drives. The data that you reconstruct is the data
as it would appear on the failed drives.
NOTE
You can use this command only when the drive is assigned to a RAID Level 1,
RAID Level 3, RAID Level 5, or RAID Level 6 volume group.
To reconstruct a drive, use this command:
start drive [ trayID,slotID ] reconstruct
In this command,
trayID
and
slotID
are the identifiers for the drive.
Initializing a Volume
ATTENTION Possible loss of data access
– When you initialize a volume, all data
on the volume and all of the information about the volume are destroyed.