Dell MD3600f, MD3620F 4 Planning: MD3600f Series Storage Array Terms and Concepts . . . . . . . . . . . 39

4Contents
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
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