Hitachi ShadowImage for z/OS user guide (HIT9503-96009, January 2008)

NOTE:

Siz 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 with the lowest LDEV ID). To obtain the pair

status for the Siz pair(s) with the other T-VOL(s), you must direct the host query to the speciﬁcTVOL

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. Table Table 12 on page 56 lists the currency of the data on shared

Siz/URz volumes based on the Siz and URz pair status

Table 12 Currency of a Shared Siz and URz Volume

URz Pair Status

Slz Pair Status

Pending duplex Duplex Suspended

Pending

Not Current Not Current Not Current

Duplex

Not Current Not Current CURRENT

SP-Pending

Not Current Not Current CURRENT

V-Split

Not Current Not Current CURRENT

Split

CURRENT CURRENT CURRENT

Resync

Not Current Not Current CURRENT

Resync-r

——

CURRENT

Suspended

Not Current Not Current Not Current

The conﬁguration shown is an example of a volume, which is functioning as both a Siz S-VOL and

an URz P-VOL. This conﬁguration allows you to:

• Use Siz to provide on-site backup copies of URz P-VOLs, and/or

• UseURztoprovideremotebackupcopiesofSizS-VOLs.

Preparing for Hitachi ShadowImage for z/OS Operations