HP Hitachi ShadowImage for Mainframe User Guide (T5213-96032, November 2011)

to confirm the pair statuses. You can perform the Steady Split operation by specifying the CSUSPEND
parameters (Byte 7 = ‘M’, Byte 8 = ‘P’, Byte 9 = ‘S’). For details about the PPRC commands, see
(page 90).
If a volume is shared with a SIz pair and a TCz pair, you can perform QuickRestore on the SIz
pair when the TCz pair is suspended. You cannot perform QuickRestore on the SIz pair when the
TCz pair is not suspended. Table 8 (page 32) shows whether you can perform QuickRestore when
a volume is shared with an SIz pair and a TCz pair.
Table 8 Quick Restore Operation When Volume Is Shared with SIz Pair and TrueCopy for Mainframe
Pair
Quick Restore Operation on SIz PairShared Volume
TrueCopy for MainframeShadowImage for Mainframe
YesP-VOLP-VOL
YesS-VOL
YesP-VOLS-VOL
XP Continuous Access Journal Software™ for Mainframe
URz volumes can be assigned to SIz pairs, and vice versa.
A primary volume (P-VOL) of Universal Replicator for Mainframe means a primary data volume of
Universal Replicator for Mainframe. A secondary volume (S-VOL) of Universal Replicator for
Mainframe means a secondary data volume of Universal Replicator for Mainframe.
ShadowImage for Mainframe and Universal Replicator for Mainframe can function together in the
same storage system to provide both internal and remote backup for your important data. To query
the status of a SIz pair when SIz and URz pairs share the same volume, do the following:
• Query the SIz S-VOL and T-VOL status from the host if the SIz S-VOL and URz P-VOL share the
same volume,
• Query the SIz T-VOL status from the host if the SIz S-VOL and URz S-VOL share the same
volume.
• Query the SIz S-VOL status from the host if the SIz T-VOL and URz P-VOL share the same
volume.
ShadowImage for Mainframe supports multiple T-VOLs for each S-VOL. If you issue a pair status
query to an SIz S-VOL, the status for only one SIz pair is reported (the pair with the T-VOL and
with the lowest LDEV ID). To obtain the pair status for the SIz pairs with the other T-VOLs, you must
direct the host query to the specific T-VOL using the T-VOL’s LDEV ID in the host command. The SIz
remote console software displays the LDEV ID and SIz pair status of all T-VOLs associated with an
S-VOL.
When you perform PPRC command to the SIz/URz shared volumes to query the pair status, the
storage system reports pair status of the SIz. To query pair status of the URz from the host, use XP
for Business Continuity Manager Software™. For details regarding how to use XP for Business
Continuity Manager Software™, see the HP XP for Business Continuity Manager Software User's
Guide.
Table 9 (page 33) lists the currency of the data on shared SIz/URz volumes based on the SIz and
URz pair status.
32 Interoperability with other Products and Functions