HP StorageWorks External Storage XP user guide for the XP12000, XP10000, SVS200 (T1706-96009, October 2007)

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 l

ocal 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

olume Manager. For more information, see the HP StorageWorks LUN Conﬁguration and

Security

Manager XP user guide for the XP12000/XP10000/SVS200.

NOTE:

When usin

g 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 Capac

ity column on the LDEV Information pane in External Storage XP (see Checking

an exter

nalLU'sstatus(LDEVInformation)).

NOTE:

TocreateaContinuousAccessXPpairwithavolumeofanXP1024/XP128DiskArray,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

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