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4 Contents
RAID Controller Module Connectors and Features . . . 34
Host Channel LED Link/Rate Indications
. . . . . . . . 36
RAID Controller Module—Additional Features
. . . . . 36
Battery Backup Unit
. . . . . . . . . . . . . . . . 36
Storage Array Thermal Shutdown
. . . . . . . . . 37
System Password Reset
. . . . . . . . . . . . . . 37
Cache Functions and Features
. . . . . . . . . . . . . . 37
Cache Mirroring
. . . . . . . . . . . . . . . . . . . 37
Write–Back Cache
. . . . . . . . . . . . . . . . . 38
Write–Through Cache . . . . . . . . . . . . . . . 38
SFP Transceivers, Fiber Optic, and SAS Cables. . . . . 38
Interoperability of 2 Gbps, 4 Gbps,
and 8 Gbps Devices
. . . . . . . . . . . . . . . . . . . 40
4 Planning: MD3600f Series Storage
Array Terms and Concepts . . . . . . . . . . . 41
Physical Disks, Virtual Disks, and Disk Groups. . . . . 41
Physical Disks
. . . . . . . . . . . . . . . . . . . . 42
Physical Disk States
. . . . . . . . . . . . . . . . 42
Self-Monitoring Analysis and
Reporting Technology
. . . . . . . . . . . . . . . . 43
Virtual Disks and Disk Groups
. . . . . . . . . . . 43
Virtual Disk States
. . . . . . . . . . . . . . . . . 44
RAID Levels
. . . . . . . . . . . . . . . . . . . . . . . . 45
RAID Level Usage
. . . . . . . . . . . . . . . . . . 45
Segment Size
. . . . . . . . . . . . . . . . . . . . . . . 47
Virtual Disk Operations
. . . . . . . . . . . . . . . . . 47
book.book Page 4 Tuesday, June 18, 2013 3:03 PM