Dell PowerVault MD3200i - Manual (Page 4)

4 Contents
3 Planning: RAID Controller Modules
. . . .
31
RAID Controller Modules . . . . . . . . . . . . . . . . 31
RAID Controller Module Connectors
and Features
. . . . . . . . . . . . . . . . . . . . . . . 32
RAID Controller Module—Additional Features . . . . . 34
Battery Backup Unit
. . . . . . . . . . . . . . . .
34
Storage Array Thermal Shutdown
. . . . . . . . .
34
System Password Reset . . . . . . . . . . . . . . 35
Cache Functions and Features . . . . . . . . . . . . . . 35
Cache Mirroring . . . . . . . . . . . . . . . . . . . 35
Write-Back Cache
. . . . . . . . . . . . . . . . .
35
Write-Through Cache
. . . . . . . . . . . . . . . .
36
4 Planning: MD3200i Series Storage
Array Terms and Concepts
. . . . . . . . . . .
37
Physical Disks, Virtual Disks, and Disk Groups . . . . . 37
Physical Disks . . . . . . . . . . . . . . . . . . . . 37
Physical Disk States
. . . . . . . . . . . . . . . .
38
Self-Monitoring Analysis and
Reporting Technology
. . . . . . . . . . . . . . . .
39
Virtual Disks and Disk Groups
. . . . . . . . . . .
39
Virtual Disk States . . . . . . . . . . . . . . . . . 40
RAID Levels . . . . . . . . . . . . . . . . . . . . . . . . 40
RAID Level Usage . . . . . . . . . . . . . . . . . . 41
Segment Size . . . . . . . . . . . . . . . . . . . . . . . 42
Virtual Disk Operations . . . . . . . . . . . . . . . . . 43
Virtual Disk Initialization . . . . . . . . . . . . . . 43
Background Initialization . . . . . . . . . . . . . . 43
book.book Page 4 Tuesday, June 18, 2013 3:15 PM