HP XP External Storage Software - Manual (Page 189)

C Adjusting volume capacity for copy pair
setting
When creating a Business Copy XP or Flex Copy XP copy pair, the S-VOL's capacity must be the
same as the P VOL. To set a copy pair's desired volume, you might need to adjust the volume capacity.
This section describes the procedure to adjust the volume capacity.
Copying data from external arrays (using external LUs as
P-VOLs)
For A, B, and C in the following description, see Figure 72 .
To adjust the volume capacity to create a pair:
1. Map the external LU (A) as an internal LDEV (B) of the local array. Ensure that the volume's
emulation type is OPEN-V.
2. Select the local array volume (C) with the same capacity as the mapped internal LDEV (B) or a
bigger capacity than the mapped internal LDEV (B). The volume's (C) emulation type must be
OPEN-V.
3. If you select the local array volume (C) with a bigger capacity than the mapped internal LDEV
(B), create the CV with the same capacity as the mapped internal LDEV (B) out of the local array
volume (C) using Volume Manager. For more information, see the HP StorageWorks LUN
Configuration and Security Manager XP user guide for the XP12000/XP10000/SVS200.
NOTE:
When using Volume Manager to create a CV with the same capacity as the mapped internal
LDEV (B), specify the CV's capacity according to the Blocks capacity displayed in the
Capacity
column on the LDEV Information pane in External Storage XP (see
Checking an external LU's status (LDEV Information) ).
NOTE:
To create a Continuous Access XP pair with a volume of an XP1024/XP128 Disk Array,
you might not be able to create a CV with the same capacity as the internal LDEV (B) because
Volume Manager does not allow you to specify the capacity in blocks. In this case, you
cannot create a Continuous Access XP pair.
4. Create a copy pair.
External Storage XP user guide for the XP12000, XP10000, SVS200 189