The following table shows the pair status that is reported for different combinations of shared volumes.
|
Number of TC pairs |
Number of SI S-VOLs |
Pair status |
|---|---|---|
|
0 |
0 |
It does not display in pair list. |
|
0 |
1 |
SI pair status |
|
0 |
2 or more |
SI pair status for the S-VOL with lowest LUN. |
|
1 |
0 |
TC pair status |
|
1 |
1 |
TC pair status |
|
1 |
2 or more |
TC pair status |
- TC pair status is reported to the host if you query the TC P-VOL or S-VOL. To obtain the SI pair status, query the SI P-VOL pair.
- SI supports multiple S-VOLs for each of its P-VOLs, but when you issue a pair status query, the status is returned only for the pair whose S-VOL has the lowest
LUN. To check pair status for the other S-VOLs, direct a host query to the specific S-VOL using the S-VOL's
LUN in the host command.
Device Manager - Storage Navigator displays the status of all S-VOLs.
The following table shows when data is current on a shared TC/SI volume based on the pair statuses.
|
TC pair status |
SI pair status |
|||||
|---|---|---|---|---|---|---|
|
COPY (PD)/COPY |
PAIR |
COPY (SP)/COPY |
PSUS |
COPY (RS)/COPY, COPY(RS-R)/RCPY |
PSUE |
|
|
COPY |
Not Current |
Not Current |
Not Current |
Current |
Not Current |
Not Current |
|
PAIR |
Not Current |
Not Current |
Not Current |
Current |
Not Current |
Not Current |
|
PSUS (Delete pair to RCU)/PSUE (pair suspended-error) |
Not Current |
Current |
Current |
Current |
Current |
Not Current |