HP StorageWorks XP Remote Web Console Software - Manual (Page 18)

18 Snapshot XP
distinguish between SMPL and SMPL(PD) volumes using RAID Manager, issue the
inqraid
command
as well. The
inqraid
command shows whether Snapshot XP is using the volume. As a result of the
inqraid
command, if Snapshot XP is not using the volume, the volume status is SMPL. If Snapshot XP
is using the volume, the volume status is SMPL(PD).
Referencing Snapshot XP pair information
Information about Snapshot XP pairs, such as snapshot ID or pair status, can be referenced on the Detail
pane in Command View XP or XP Remote Web Console. For more information, see ” Deleting Snapshot XP
pairs ” on page 47.
In addition, operation history for Snapshot XP pairs, such as creating or deleting Snapshot XP pairs and
storing snapshot data, can be referenced on the History pane. For more information, see ” Displaying
detailed information about Snapshot XP pairs ” on page 51.
Snapshot XP operations
This section describes requirements for using Snapshot XP, installing Snapshot XP, and calculating the
number of pairs that Snapshot XP can create.
Requirements for using Snapshot XP
For requirements of volumes used for Snapshot XP, see ” Volumes Snapshot XP uses ” on page 13.
Installing Snapshot XP
1. Install additional shared memory for differential tables.
2. Install additional shared memory for the V-VOL management area.
When using an XP10000, you do not need to install additional shared memory. You only need to
define shared memory for the V-VOL management area.
3. Install Business Copy XP, which is a prerequisite for Snapshot XP.
4. Install Snapshot XP.
NOTE:
•
Contact your HP Account Support Representative to install additional shared memory for the V-VOL
management area.
Table 4 Requirements for using Snapshot XP
Item Requirement
RAID level RAID1, RAID5, or RAID6
Shared memory Shared memory for the differential table must be installed on the base board.
Shared memory must be configured so the V-VOL management area can be created
in the shared memory.
For the XP12000, you must reserve from 512 MB
× 2 to 2 GB × 2 capacity of the
shared memory for the V-VOL management area on the optional board. 1 For more
information, see ” Calculating the number of Snapshot XP pairs that can be created ”
on page 19.
1. Because the XP10000 does not have the optional board, you must reserve 342 MB × 2 capacity of the shared memory on the
basic board if you are using the XP10000.
Prerequisite software product Business Copy XP must be installed.
Pool The pool must be created. The pool’s maximum capacity changes with shared
memory’s capacity.
V-VOL The V-VOL must be created.
Operation Command View XP or XP Remote Web Console and RAID Manager are required to
operate Snapshot XP.