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

7-10 Performing ShadowImage for z/OS Pair Operations Using PPRC
Hitachi ShadowImage™ for IBM
®
z/OS
®
User’s Guide
You can use QUIESCE parameter to the SIz pairs only when the pair status is
duplex. If an SIz S-VOL has more than one T-VOL, the QUIESCE parameter is
effective if at least one pair is specified. Write requests at the S-VOL will start
when all QUIESCE conditions are released. The following conditions cause the
USP V storage system to automatically release the QUIESCE condition:
– A CSUSPEND TSO command without the QUIESCE parameter is
accepted.
– A CDELPAIR TSO command is accepted.
– A Delete, Suspend, or Split Pair command (from the Storage Navigator
computer) is accepted.
– storage system power-on-reset is executed.
Notes:
– If a ShadowImage for z/OS pair is suspended because of an internal
storage system error condition, the QUIESCE option is applied. In this
case, release the QUIESCE condition by deleting the pair.
– SIz and TCz are processed independently. The CSUSPEND/QUIESCE
command is effective for either the SIz or TCz pair specified in the
command.
Figure 7-4 shows an example of the CSUSPEND command.
CSUSPEND DEVN (X ‘DE80’ ) PRIM (X ‘0080’ ,30158,X ‘00’ ) SEC (X ‘0080’ ,30158,X ‘01’ )
Figure 7-4 Example of CSUSPEND Command
SUSPEND
Table 7-7 lists and describes the SUSPEND command parameters that can be
used when you split SIz pairs.
Table 7-7 SUSPEND Command Parameters
Parameter Value Description
DDNAME,
SYSNAME, or
UNITADDRESS
DDNAME = dname = JCL statement
identifying the volume.
SYSNAME = sysxxx = SYSNAME in the
ASSGN system control statement.
UNITADDRESS = ccuu = device number.
You should specify only one parameter of the
three parameters. The italic part on the left
means that it is the arbitrary name. For
example, dname means the arbitrary unique
name of the JCL statement which identifies the
volume.
PRI
Primary volume (S-VOL): SSID, serial
number, and channel connection address.
You can set an additional parameter MPS00
instead of a serial number.
The parameter MPS00 is for a steady split request. If
you set other than the serial number or the parameter
MPS00, the command will be rejected.
SEC
Secondary volume (T-VOL): SSID, serial
number, and channel connection address.
PRIMA Not applicable. SIz does not use this parameter. Siz ignores it.