Hitachi ShadowImage for IBM z/OS User"s Guide (T5213-96002, June 2007)

Performing ShadowImage for z/OS Pair Operations Using PPRC 7-15
Hitachi ShadowImage™ for IBM
®
z/OS
®
User’s Guide
Deleting Pairs Using PPRC Commands
The CDELPAIR and PPRCOPY DELPAIR commands are equivalent to the
ShadowImage for z/OS delete pair operation. The CDELPAIR and PPRCOPY
DELPAIR commands must be issued to the S-VOL.
A DELPAIR command performed when pair status is split enables the T-VOL to
be accessed by the host. A DELPAIR command performed when pair status is
other than split allows non-reserved T-VOLs to be accessed by the host.
Reserved simplex volumes cannot be accessed.
WARNING: For duplex SIz pairs, the S-VOL and its associated T-VOL(s) are
usually not identical, because SIz update copy operations are asynchronous.
Therefore, if a pair is deleted with status other than split, the data integrity of
the T-VOL cannot be guaranteed.
CDELPAIR
Table 7-10 lists and describes the CDELPAIR command parameters that can be
used when you delete SIz pairs.
Table 7-10 CDELPAIR Command Parameters
Parameter Value
DEVN Device number.
PRIM
Primary volume (S-VOL): SSID, serial number, channel connection address, and CU
number
*
.
SEC
Secondary volume (T-VOL): SSID, serial number, channel connection address, and CU
number
*
.
*Note: CU number or the parameter is only valid for the DKC emulation type
2105 or 2107.
Figure 7-8 shows an example of the CDELPAIR command.
CDELPAIR DEVN (X ‘DE80’ ) PRIM (X ‘0080’ ,30158,X ‘00’ ) SEC (X ‘0080’ ,30158,X ‘01’ )
Figure 7-8 Example of TSO Delete Command
DELPAIR
Table 7-11 lists and describes the DELPAIR command parameters that can be
used when you delete SIz pairs.
Table 7-11 DELPAIR Command Parameters
Parameter Value Description