Business Copy XP user guide for the XP10000/XP12000 45
Figure 23 is an example of a volume functioning as both a Continuous Access XP S-VOL and a Continuous
Access XP Journal P-VOL. In this configuration, you cannot use this volume as the P-VOL of a BC pair.
Figure 23 BC, Continuous Access XP, and Continuous Access XP Journal: Shared S-VOL/P-VOL/S-VOL
Combining BC with LUN Security XP Extension
BC can create pairs using volumes for which LUN Security XP Extension sets the access attribute. However,
you cannot create a BC pair specifying a volume with the S-VOL Disable attribute as an S-VOL.
Table 17 shows whether you can specify the volume with access attribute as a P-VOL or S-VOL of a BC
pair.
Table 18 shows whether you can perform BC operations on the volume with the S-VOL Disable attribute.
Table 17 Access attribute and availability as a BC pair volume
Access attribute Availability as a BC pair volume
P-VOL S-VOL
Read/Write OK OK
Read Only OK NO
Protect OK NO
S-VOL Disable OK NO
Table 18 Availability of BC operations on volumes with the S-VOL Disable attribute
BC operations Availability of BC operations
P-VOL S-VOL
Paircreate OK NO
Pairsplit OK NO
Paircreate and Pairsplit
1
1. Paircreate and Pairsplit means you simultaneously create and split BC pairs (see ”Creating and splitting pairs” on
page 66)
OK NO
Forward Pairresync OK NO
Backward Pairresync NO NO
Suspend OK NO
Delete OK OK
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