HP NetServer AA 4000 HP Netserver AA Solution Administrator's Guide v - Page 46
Mirrored Disk States, Table 2-8
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Mirrored Disk States The mirrored disk states are: Table 2-8 Mirrored Disk States State Description Online Offline Standby 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. 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. The disk is available online, but is not an up to date copy of the mirror set. 2-18 HP Netserver AA Solution Administrator's Guide