HP XP RAID Manager Software - Manual (Page 8)

Components
A Snapshot system usually consists of the following components.
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Snapshot program product
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Business Copy program product
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A pair of volumes (primary and secondary)
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A data pool
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A consistency group
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Remote Web Console
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RAID Manager
Licenses and capacity
Snapshot requires P9500 Business Copy to be installed on the same system. Sufficient licensed
capacity for Snapshot and Business Copy is required.
Snapshot uses a V-VOL management area for managing V-VOLs and data pools. The V-VOL
management area is created when additional shared memory is installed.
Consistency groups
Snapshot pairs operations can be performed on multiple pairs at the same time when they are
defined in consistency groups. Consistency groups are set up during pair creation.
Interfaces for performing Snapshot operations
Setup and pair operations are performed using a combination of Remote Web Console and RAID
Manager.
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Data pools and V-VOLs are set up using Remote Web Console. Also, pair and data pool
status can be viewed using Remote Web Console.
•
Pair operations are performed using RAID Manager.
Remote Web Console
Remote Web Console is connected to the P9500 storage system via the TCP/IP local-area network
(LAN). Remote Web Console communicates and exchanges data directly with SVP of the connected
storage system.
RAID Manager
RAID Manager is set up on the host. Snapshot commands are sent from RAID Manager to a
command device on the storage system. This volume is dedicated to RAID Manager communications
and cannot be used by any other applications.
Pair status
A pair’s status is an indicator of a its condition. Monitoring pair status shows when an operation
is completed, and when an operation can be performed. Pairs must have a specific status for
specific operations to be executed.
The following provides a brief description of pair statuses. See “Monitoring pair status” (page 32)
for more detailed information about each status and how to monitor.
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SMPL: A volume that is not assigned to a pair is in Simplex status, SMPL. When a pair is
deleted, the status of both volumes changes back to SMPL.
•
COPY: When the initial copy is started but not yet completed.
8 Overview