4

RAID Controller Module Connectors and Features . . .

30

RAID Controller Module—Additional Features

32

Battery Backup Unit

32

Storage Array Thermal Shutdown

33

System Password Reset

33

Cache Functions and Features

34

Cache Mirroring

34

Write-Back Cache

34

Write-Through Cache

34

4Planning: MD3200 Series Storage

Array Terms and Concepts . . . . . . . . . . . 35

Physical Disks, Virtual Disks, and Disk Groups

35

Physical Disks

36

Physical Disk States

36

Self-Monitoring Analysis and Reporting

 

Technology

37

Virtual Disks and Disk Groups

37

Virtual Disk States

38

RAID Levels

38

RAID Level Usage

39

Segment Size

41

Virtual Disk Operations

41

Virtual Disk Initialization

41

Background Initialization

41

Foreground Initialization

41

Consistency Check

42

Media Verification

42

Cycle Time

42

Contents

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Image 4
Dell MD3220 owner manual Planning MD3200 Series Storage Array Terms and Concepts, Cache Functions and Features