With Perform Subsystem Function (PSF) commands, you can run PPRC commands and user requests in the storage system.
The following table describes how PSF commands interact with ShadowImage for Mainframe pairs.
|
PSF commands |
Interaction with SIz pairs |
|---|---|
|
Device pair status |
See the table below. |
|
Rate of synchronization |
The differential bitmap format is different than that of TCz. This PSF command is not available with SIz pairs. |
|
Primary volume with 2 or more S-VOLs |
Shows information for the pair with an S-VOL that has the lowest LDEV ID. |
|
Path status |
Active |
|
Path number |
If the volume is not part of a TCz pair, 1 is displayed with TCz information. |
Example of the DEVSERV command:
The following table lists the PSF and DEVSERV command results.
|
Pair status (CCI/ BCM) |
CQUERY/PPRC QUERY (LEVEL/STATE) |
PSF Read Subsystem Data |
DEVSERV Sense Subsystem Status |
|||
|---|---|---|---|---|---|---|
|
P-VOL |
S-VOL |
P-VOL |
S-VOL |
P-VOL |
S-VOL |
|
|
CPPD/ PENDING |
PRIMARY/ PENDING |
SECONDARY/ PENDING |
PPRI-PNDG |
PSEC-PNDG |
PPRI-PNDG |
PSEC-PNDG |
| PAIR/ DUPLEX |
PRIMARY/ DUPLEX |
SECONDARY/ DUPLEX |
PPRIMARY* |
PSECONDRY* |
PPRIMARY* |
PSECONDRY* |
|
COPY/ TRANS |
PRIMARY/ PENDING |
SECONDARY/ PENDING |
PPRI-PNDG |
PSEC-PNDG |
PPRI-PNDG |
PSEC-PNDG |
|
PSUP/ SUSPVS |
PRIMARY/ SUSPEND |
PRIMARY/ SUSPEND |
PPRI-SUSP |
PSEC-SUSP |
PPRI-SUSP |
SIMPLEX |
|
PSUS(SSUS)/ SUSPOP |
PRIMARY/ SUSPEND |
PRIMARY/ SUSPEND |
PPRI-SUSP |
PSEC-SUSP |
PPRI-SUSP |
SIMPLEX |
|
PSUE/ SUSPER |
PRIMARY/ SUSPEND |
PRIMARY/ SUSPEND |
PPRI-SUSP |
PSEC-SUSP |
PPRI-SUSP |
PSEC-SUSP |
|
CPRS/ PENDING |
PRIMARY/ PENDING |
SECONDARY/ PENDING |
PPRI-SNDG |
PSEC-SNDG |
PPRI-SNDG |
PSEC-SNDG |
|
* PPRIMARY and PSECONDRY indicate that the pair status is DUPLEX. |
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