HP P2000 G3 MSA Technical White Paper

Technical white paper
HP P2000 G3 MSA
Best practices
Table of contents
About this document ............................................................................................................................................................ 3
Intended audience ................................................................................................................................................................. 3
Prerequisites .......................................................................................................................................................................... 3
Related documentation ........................................................................................................................................................ 3
The P2000 G3 MSA ............................................................................................................................................................... 3
Topics covered ................................................................................................................................................................... 3
What’s new in the P2000 G3 MSA ................................................................................................................................... 4
Hardware overview ........................................................................................................................................................... 4
Unified LUN Presentation ................................................................................................................................................. 5
Choosing single or dual controllers ................................................................................................................................ 7
Choosing DAS or SAN attach ............................................................................................................................................ 8
Dealing with controller failovers ..................................................................................................................................... 8
Virtual disks ..................................................................................................................................................................... 11
Virtual Disk Expansion Best Practices ......................................................................................................................... 14
Vdisk Expansion Capability for Supported RAID Levels............................................................................................. 14
Vdisk Expansion ............................................................................................................................................................. 14
Vdisk Expansion Recommendations ........................................................................................................................... 15
Allocate “quiet” period(s) to help optimize Vdisk expansion .................................................................................... 15
Re-create the Vdisk with additional capacity and restore data ............................................................................... 15
Volume mapping ............................................................................................................................................................ 16
RAID levels ...................................................................................................................................................................... 16
Cache configuration ....................................................................................................................................................... 17
World Wide Name naming conventions ...................................................................................................................... 19
Fastest throughput optimization ................................................................................................................................. 21
Highest fault tolerance optimization ........................................................................................................................... 21
Boot from storage considerations ............................................................................................................................... 21
Disk Background Scrub, Drive Spin Down, and SMART ............................................................................................. 21
Cascading Array Enclosures .......................................................................................................................................... 23
8 Gb Switches and SFP transceivers ............................................................................................................................ 24
MSA70 considerations ................................................................................................................................................... 24
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HP P2000 G3 MSA Specifications

General

Model	HP P2000 G3 MSA
Form Factor	2U
Drive Types	SAS, SATA
Controllers	Dual controllers
Host Interface	SAS, iSCSI, Fibre Channel
RAID Levels	0, 1, 5, 6, 10
Management	Web-based, CLI
Cache Memory	2 GB per controller