HP StorageWorks External Storage XP user guide (December 2005)

External Storage XP user guide 87

2. Select the disk array volume (C) with the same capacity as the mapped internal volume (B) or a bigger

capacity than the mapped internal volume (B). The volume’s (C) emulation type must be OPEN-V.

3. If you select the disk array volume (C) with a bigger capacity than the mapped internal volume (B),

create the CV with the same capacity as the mapped internal volume (B) out of the disk array volume

and Security Manager XP User Guide for the XP10000/XP12000.

NOTE: When using Volume Management to create a CV with the same capacity as the mapped

internal volume (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 External

Storage XP volume status (LDEV Information)” on page 64).

NOTE: To create a Continuous Access XP pair with a volume of a Lightning 9900V Series or

Lightning 9900C Series subsystem, you might not be able to create a CV with the same capacity as

the internal volume (B) because Volume Management 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.

Figure 46 Copying data from external disk arrays (using external volumes as P-VOLs)

Copying data to external disk arrays (setting external volumes as S-VOLs)

For A, B, and C in the following description, see Figure 47.

To adjust the external volume’s capacity to create a pair:

1. Map the external volume (A) as an internal volume (B) of the disk array. Set the emulation type to the

same as the copy source volume (C).

2. Check the capacity of the internal volume (B) to which the external volume (A) is mapped. If the

mapped internal volume’s (B) capacity is not same as the copy source volume (C), use Volume

Management to create a CV with the same capacity as the copy source volume (C) out of volume (B).