HP Netserver AA Solution Administrator's Guide v4.0 SP1

2-18 HP Netserver AA Solution Administrator’s Guide
Mirrored Disk States
The mirrored disk states are:
Table 2-8 Mirrored Disk States
State Description
Online Indicates that a disk is available for use or is currently in use by the CE operating system.
As a mirror copy begins, a mirror copy target transitions from offline to online and
remains online when the mirror copy completes successfully. However, if the copy
cannot complete successfully because of some system-wide state change or because of
a disk level state change, the disk state transitions to offline or faulted.
Offline Indicates that a disk is not available for use by the CE operating system. A disk can be
offline because either:
• The disk is the target of a mirror copy that is pending (not started).
• The disk was not detected during system boot. Possible reasons include the disk was
powered off, failed, or was improperly defined using the Endurance Configuration
Utility.
• The disk was detected during system boot, but a characteristic of the disk was invalid.
Possible reasons include: a corrupt or invalid partition table, a corrupt or invalid
Endurance sector, or the disk was the target of a mirror copy that previously failed to
complete.
• The mirror copy target is too small for a given mirror copy source. In this case, the
target disk remains offline indefinitely and must be replaced by a larger disk.
Standby The disk is available online, but is not an up to date copy of the mirror set.