a rescan of all channels after disconnecting a disk, the state of every array using the missing disk changes from NORMAL to either the CRITICAL or OFFLINE, depending on the array type.
Disk States
Within the management applications, a disk can be part of one or more arrays and can exist in one of three states: NORMAL, FAILED, or UNKNOWN. In RAIDConsole, these states are displayed in the Disk List area in a column named State. Within the bcadm program, these states are also displayed in a column named State. The states are defined as follows:
•NORMAL The NORMAL state is displayed when the disk is con- nected, functioning correctly, and the controller can communicate with it.
•FAILED The FAILED state is displayed when the controller can rec- ognize the disk, but cannot read or write to it.
•UNKNOWN The UNKNOWN state is displayed when the disk is new and has not been initialized, or is in a format unrecognizable by the controller.
If a disk fails, its state in the Disk List is displayed as FAILED. However, if the system tries to communicate with a disk that has been physically disconnected, the disk shows as FAILED in the Array List window but still appears in the Disk List as NORMAL until a rescan is performed. After you have rescanned the SATA channels for information, the discon- nected disk disappears from the Disk List.
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