HP StorageWorks XP Remote Web Console Software User Manual
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Figure 18 Shared Universal Replicator for Mainframe Secondary Data Volume and
ShadowImage for Mainframe S-VOL
CAUTION:
If you use a Universal Replicator for Mainframe secondary data volume as a
ShadowImage for Mainframe S-VOL as shown in
, the write operation to
the Universal Replicator for Mainframe primary data volume takes time. Especially, when the
ShadowImage for Mainframe pair is in the V-Split status, the write operation to the Universal
Replicator for Mainframe primary data volume may takes extra time according to the time for
the copying process of the ShadowImage for Mainframe pair.
In addition, note that if the journal volume size is small, the Universal Replicator for Mainframe
pair may be suspended by a failure because of the shortage of the capacity of its journal
volume.
Business Continuity Manager allows you to set the starting time for the backup copy to journal
groups. In the above configuration, if you set the starting time for the backup copy, the writes
to the primary data volume up to that time will be backed up to the secondary data volume.
If the above configuration is used in multiple journal volumes in multiple storage systems, you
can set the same starting time for the backup copy to all the journal groups. If you do this
operation, the primary data volumes will be backed up across the multiple storage systems
at the same time.
•
Universal Replicator for Mainframe/ShadowImage for Mainframe configurations which share
the Universal Replicator for Mainframe primary data volume and ShadowImage for Mainframe
S-VOL and the Universal Replicator for Mainframe secondary data volume and ShadowImage
for Mainframe S-VOL
The following figure combines the configurations shown in
and
. Within a single Universal Replicator for Mainframe pair, the primary
data volume and secondary data volume are both functioning as ShadowImage for Mainframe
S-VOLs, providing multiple copies at the primary and secondary sites.
Interoperability with Other Products and Functions
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