HP XP RAID Manager Software - Manual (Page 10)

2 Planning and design
This chapter describes requirements for setting up and using Snapshot, as well as data pool sizing
information.
System requirements
Many of the requirements here are augmented with recommendations and restrictions later in this
chapter.
Table 1 System Requirements
Requirement Item
Business Copy is required to operate Snapshot. All P9500 hardware, microcode, and software
required for Business Copy operations must be installed and enabled. Software
Capacity for Snapshot is part of the licensed capacity for Business Copy. Insure that the licensed
capacity for Business Copy is more than the combined capacity needed for both products. License capacity
The number of products using a volume does not increase the amount of licensed capacity that
must be purchased. Only the capacity of the volume counts toward licensed capacity.
•
Required
Snapshot: 716.8 MB (RACK model is supported up to Snapshot.)
Snapshot Extension1: 4,096 MB (Snapshot/VFS1 + 3379.2 MB)
Shared memory
•
P9500 can handle a 7.15 TB database with 7 generations.
• Verify that your system has the appropriate Snapshot V-VOL management area installed by
HP Technical Support.
•
Memory for the V-VOL management area and Thin Provisioning cannot be shared.
RAID Manager •
Required for performing Snapshot pair operations.
•
RAID Manager requires one volume to be used as a command device. See the HP P9000
RAID Manager Reference Guide for setup information.
P-VOL, V-VOL, and volumes must be logical volumes (LDEV) Volume
See also the following information: type
• “Data pool requirements and restrictions” (page 11)
• “Number of pairs” (page 13)
• “Planning for external volumes” (page 17)
The following configurations are recommended to keep performance.
•
Do not mix a normal volume and a pool VOL in one parity group.
• Make sure that pool VOLs consist of LDEVs from multiple parity groups.
•
Assign different processor blade IDs to LDEVs that pool VOLs consist of.
For details on assigning processor blade ID, see HP P9000 Provisioning for Open Systems User
Guide.
P-VOL, V-VOL, and data pool volumes: OPEN-V Emulation type
Maximum 64 V-VOLs per P-VOL Pair configuration
RAID level • RAID1, RAID1+0, RAID5 or RAID6 supported.
•
A data pool cannot contain different RAID levels.
LUSE • Supported for P-VOL, V-VOL
•
Not supported for the pool-VOL
A data pool cannot contain pool-VOLs belonging to different CLPRs. CLPR
10 Planning and design