Creating xp snapshot pairs, Storing xp snapshot data – HP StorageWorks XP Remote Web Console Software User Manual

Page 85

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•

Icons

The following icons are displayed in the dialog box.

◦

V-VOL group

◦

V-VOL group (in the process of being deleted)

•

The Page area displays the number of the current page and the following items are used to
change pages of the list.

◦

Previous button allows you to display the previous 4,096 V-VOL groups.

◦

N/M drop-down list: The N displays the number of the current page. The M displays total
number of pages. You can click the drop-down list, and choose the number of the page
you want to display.

◦

Next button allows you to display the next 4,096 V-VOL groups.

•

Set button specifies that the V-VOL groups selected in the V-VOL information setting list will be
deleted. The V-VOL groups to be deleted are displayed as blue-italic fonts.

•

Clear button clears each setting in the V-VOL information setting list.

•

OK button closes the Delete V-VOL Groups dialog box. A confirmation message indicating if
it is OK to apply the setting to the storage system is displayed.

•

Cancel button cancels all the settings in the Delete V-VOL Groups dialog box.

Creating XP Snapshot Pairs

Use the paircreate command of the RAID Manager to create XP Snapshot pairs. To create XP
Snapshot pairs, the following are required.

•

Specify a volume that meets the requirements in

“P-VOL Requirements” (page 33)

as a P-VOL

•

Specify a volume that meets the requirements in

“S-VOL Requirements” (page 34)

as an S-VOL

•

Specify the same size volumes as a P-VOL and S-VOL

•

When you use a volume that is already used as the P-VOL of another pair for the P-VOL of
the new pair, specify the same pool for the pairs which share the P-VOL

For details about the paircreate command, see the HP StorageWorks XP RAID Manager User
Guide
.

Storing XP Snapshot Data

Use the pairsplit command of the RAID Manager to store snapshot data in the pool. You can
store 64 snapshot data at most per P-VOL. To store snapshot data, the pair status must be PAIR.

When a P-VOL is paired with two or more volumes, make sure that none of the pairs is in
COPY(RS-R) status. If some pairs are in the COPY(RS-R) status, the pairsplit command may end
abnormally.

During execution of the pairsplit command to the XP Snapshot pair, do not execute the
pairresync -restore

command to the other XP Snapshot pair that shares P-VOL with the

corresponding pair. The pairsplit command being executed may end abnormally. Possible
causes are as follows:

•

Command rejection

•

Timeout (Error code: EX_EWSTOT)

•

Suspending the pair (Error code: EX_EWSUSE)

Creating XP Snapshot Pairs

85

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