HP XP Business Copy Software User Manual
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Figure 11 SIz and TCz: Shared S-VOL / R-VOL
CAUTION:
When you share a SIz S-VOL with a TCz R-VOL as shown in
,
the write operation to the TCz M-VOL takes time. When the SIz pair is in the V-Split status, the
write operation to the TCz M-VOL may take longer depending on the time needed for the SIz pair
copying process.
When you split SIz pairs, if a volume is shared with TCzA and SIz, consider the following points:
•
Split the SIz pair after you have changed the status of TCzA pair to Suspend.
•
If you split SIz pairs for each CTG, split the pairs after you have changed the status of all
TCzA pairs in the specified CTG to Suspend, and also make the consistency time (C/T) of the
CTG equal to the C/T of each TCzA pair.
You can also prevent the SIz split operation if it does not meet these points. For details, call HP
technical support. See
“Calling HP Technical Support” (page 111)
In addition, note that in the case of TCzA, the TCz pair may be suspended by failure because of
the shortage of the capacity of its side file.
is an example of a volume, which is functioning as both a TCz M-VOL and
an SIz S-VOL, while the R-VOL of the same TCz pair is also functioning as the S-VOL of another
SIz pair. This configuration allows you to:
•
Use ShadowImage for Mainframe to provide on-site backup copies of TCz M-VOLs and R-VOLs,
and/or
•
Use TCz to provide remote backup of SIz S-VOLs.
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Interoperability with other Products and Functions