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4 Contents
RAID Controller Module Connectors and Features . . . 32
Host Channel LED Link/Rate Indications
. . . . . . . . 34
RAID Controller Module—Additional Features
. . . . . 34
Battery Backup Unit
. . . . . . . . . . . . . . . . 34
Storage Array Thermal Shutdown
. . . . . . . . . 35
System Password Reset
. . . . . . . . . . . . . . 35
Cache Functions and Features
. . . . . . . . . . . . . . 35
Cache Mirroring
. . . . . . . . . . . . . . . . . . . 35
Write–Back Cache
. . . . . . . . . . . . . . . . . 36
Write–Through Cache . . . . . . . . . . . . . . . 36
SFP Transceivers, Fiber Optic, and SAS Cables. . . . . 36
Interoperability of 2 Gbps, 4 Gbps,
and 8 Gbps Devices
. . . . . . . . . . . . . . . . . . . 38
4 Planning: MD3600f Series Storage
Array Terms and Concepts . . . . . . . . . . . 39
Physical Disks, Virtual Disks, and Disk Groups . . . . . 39
Physical Disks
. . . . . . . . . . . . . . . . . . . . 40
Physical Disk States
. . . . . . . . . . . . . . . . 40
Self-Monitoring Analysis and
Reporting Technology
. . . . . . . . . . . . . . . . 41
Virtual Disks and Disk Groups
. . . . . . . . . . . 41
Virtual Disk States
. . . . . . . . . . . . . . . . . 42
RAID Levels
. . . . . . . . . . . . . . . . . . . . . . . . 43
RAID Level Usage
. . . . . . . . . . . . . . . . . . 43
Segment Size
. . . . . . . . . . . . . . . . . . . . . . . 45
Virtual Disk Operations
. . . . . . . . . . . . . . . . . 45
book.book Page 4 Wednesday, June 8, 2011 5:01 PM