It is important to be able to understand what the meaning of a GAD status is and what that status tells you about the GAD pair.
The following table lists and describes the GAD statuses.
|
GAD status |
Description |
Data redundancy |
Updated volume |
Volume with latest data |
|---|---|---|---|---|
|
Simplex |
The volume is not a pair volume. |
No |
Not applicable |
Not applicable |
|
Mirroring |
The pair is changing to Mirrored status. This status is issued when you do the following:
|
No |
P-VOL and S-VOL |
P-VOL |
|
Mirrored |
The pair is operating normally. |
Yes |
P-VOL and S-VOL |
P-VOL and S-VOL |
|
Quorum disk blocked or no quorum disk volume |
The Quorum disk is blocked, but the data is mirrored. The data is mirrored when no volume is set for the quorum disk. |
Yes |
P-VOL and S-VOL |
P-VOL and S-VOL |
|
Suspended |
The pair is suspended. I/O from the server is sent to the volume with the latest data. When a failure occurs or the pair is suspended, the status changes to Suspended. The status changes to Suspended after the time specified for Read Response Guaranteed Time When Quorum Monitoring Stopped elapses. |
No |
P-VOL or S-VOL |
P-VOL or S-VOL |
|
Blocked |
I/O is not accepted by either pair volume. This status occurs when:
If more than one failure occurs at the same time, the GAD status changes to Blocked. |
No |
None |
P-VOL and S-VOL |