HP StorageWorks XP Remote Web Console Software - Manual (Page 75)

ShadowImage for z/OS user guide 75
PPRC Commands with ShadowImage and TrueCopy
Both SI390 and TC390 support PPRC commands. The user must ensure that commands are being executed
by the correct program against the correct volumes. A PPRC command issued to the
XP128/XP1024/XP10000/XP12000 will be executed by SI390 against SI390 pairs if all of the following
conditions are met. If any of these conditions is not met, the PPRC command will be executed by TC390
against TC390 pairs.
1. The SI390 feature and software must be installed and enabled on the
XP128/XP1024/XP10000/XP12000.
2. The serial numbers of the S-VOL and the T-VOL must be the same.
a. If you enter different serial numbers for an existing S-VOL and T-VOL, the command will fail.
b. If you enter different serial numbers and the specified SI390 pair does not exist, the command will
be executed by TC390.
3. If the XP128/XP1024/XP10000/XP12000 contains TC390 pairs, at least one SI390 pair must exist
before the command is issued.
a. If the XP128/XP1024/XP10000/XP12000 contains both SI390 and TC390 pairs, PPRC and
PPRCOPY commands that specify the same serial number for the primary (source) and secondary
(target) volumes will be executed by SI390.
b. If the XP128/XP1024/XP10000/XP12000 does not contain any SI390 or TC390 pairs, PPRC and
PPRCOPY commands that specify the same serial number for the primary (source) and secondary
(target) volumes will be executed by SI390.
c. If the XP128/XP1024/XP10000/XP12000 contains TC390 pairs but no SI390 pairs, PPRC and
PPRCOPY commands that specify the same serial number for the primary (source) and secondary
(target) volumes will be executed by TC390.
d. To start SI390 operations on an XP128/XP1024/XP10000/XP12000 that already contains TC390
pairs, you must use the SI390 remote console software to add at least one SI390 pair. After an
SI390 pair exists, the condition in 3(a) is met.
PSF and DEVSERV Commands
The perform subsystem function (PSF) commands key the XP128/XP1024/XP10000/XP12000 to accept
commands and requests from the user. The following table describes the operability of PSF commands on
SI390 volumes. Table 26 describes the PSF Read Subsystem Data and DEVSERV Sense Subsystem Status
results for SI390 volumes.
Table 25 PSF command operability for ShadowImage volumes
Item Operability for SI390
Device pair status. See Table 26 .
Percent completion of the copy operation. Not available for SI390 because the SI390 differential bitmap
format is different from the TC390 differential bitmap format.
S-VOL with 2 or more T-VOLs. Displays information for the pair having the T-VOL with the lowest
LDEV ID.
Path status. Active.
Path number. If the volume does not also belong to a TC390 pair, 1 is displayed
with TC390 info.
Table 26 PSF and DEVSERV results for ShadowImage volumes
Pair Status PSF Read Subsystem Data DEVSERV Sense Subsystem Status
S-VOL T-VOL S-VOL T-VOL
Pending PPRI-PNDG PSEC-PNDG PPRI-PNDG PSEC-PNDG
Duplex PPRIMARY PSECONDRY PPRIMARY PSECONDRY
SP-Pend PPRI-PNDG PSEC-PNDG PPRI-PNDG PSEC-PNDG