HP StorageWorks XP Remote Web Console Software - Manual (Page 54)

T-VOL is blocked because of the blockade watch, and the host I/O to the S-VOL can be
maintained.
•
If the host I/O to the T-VOL and the T-VOL data is more important than the host I/O to the
S-VOL, use the default setting for the path blockade watch for the external volume that is to
be specified as the T-VOL.
(page 54) describes whether you can perform Reverse Restore and Fast Reverse Restore on the
S-VOL or the T-VOL of a Version 2 pair for which attributes are set by other solutions.
Table 27 Whether Reverse Restore and Fast Reverse Restore Can be Used When a Version 2 Volume
is Used as a Volume of Other Solutions
Version 2 Attribute Solutions
T-VOL S-VOL
This attribute cannot be set. This attribute cannot be set. Protect Volume Retention Manager
Yes Yes Read only
Yes Yes Read/Write
This setting can be made. This setting cannot be made. Security setting that disables
the volume for use as S-VOL Volume Security
No No External Volume XP External Storage
The following volumes cannot be used as the S VOL or T VOL of the Version 2 pair.
•
Command devices used by Business Continuity Manager
•
Journal volumes of Universal Replicator for Mainframe
•
Reserve volumes used by ShadowImage for Mainframe
•
Alias volumes used by the Compatible PAV feature
•
System disks
Using Version 2 with ShadowImage for Mainframe
(page 54) shows an example of combining Version 2 with ShadowImage for Mainframe.
Figure 29 Pair Configuration Where an S-VOL of Version 2 and ShadowImage for Mainframe is
Shared
Usually, you need to specify a volume in Simplex status as a copy source (S-VOL) or a copy target
(T-VOL). When you specify a ShadowImage for Mainframe S-VOL as a copy source, you can
establish or release a Version 2 relationship only if the ShadowImage for Mainframe pair is not
in Resync-R status.
You can establish or release a Version 2 relationship if you meet these requirements. When there
is a Version 2 relationship, you cannot perform the backward resynchronization (that is, Reverse
Resync or Quick Restore) on the ShadowImage for Mainframe pair.
54 About Version 2 Operations