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EMC Fibre Channel Storage Systems Configuration Planning Guide
iv
Contents
RAID 1 Mirrored Pair ...............................................................2-7
RAID 0 Group (Nonredundant Array) ..................................2-8
RAID 1/0 Group (Mirrored RAID 0 Group).........................2-8
Individual Disk Unit .................................................................2-9
Hot Spare ....................................................................................2-9
RAID Benefits and Tradeoffs.........................................................2-12
Performance .............................................................................2-13
Storage Flexibility....................................................................2-14
Data Availability and Disk Space Usage..............................2-14
Guidelines for RAID Types ...........................................................2-17
Sample Applications for RAID Types..........................................2-19
Chapter 3 Planning File Systems and LUNs with Shared Switched
Storage
Dual Paths to LUNs..........................................................................3-2
Sample Shared Switched Installation ............................................3-3
Planning Applications, LUNs, and Storage Groups....................3-6
Application and LUN Planning ..............................................3-6
Application and LUN Planning Worksheet ..........................3-7
LUN and Storage Group Planning Worksheet .....................3-8
LUN Details Worksheet..........................................................3-11
Chapter 4 Planning LUNs and File Systems with Unshared Direct
Storage
Dual SPs and Paths to LUNs...........................................................4-2
Unshared Direct and Shared-or-Clustered Direct Storage .........4-2
Sample Unshared Direct Installation......................................4-2
Sample Shared-or-Clustered Direct Installation...................4-3
Planning Applications and LUNs..................................................4-4
Application and LUN Planning ..............................................4-4
Application and LUN Planning Worksheet ..........................4-5
LUN Planning Worksheet........................................................4-6
Completing the LUN Details Worksheet.............................4-12
Chapter 5 Storage System Hardware
Hardware for Shared Storage .........................................................5-3
Storage Hardware — Rackmount DPE-Based Storage
Systems .......................................................................................5-3
Disks............................................................................................5-4
Storage Processor (SP) ..............................................................5-5