Compaq Infortrend manual Table of Contents, RAID Functions An Introduction, RAID Planning

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Table of Contents

Chapter 1 RAID Functions: An Introduction

1.1

Logical Drive

1

1.2

Logical Volume

1

 

What is a logical volume?

1

1.3

RAID Levels

2

 

What are the RAID levels?

2

 

NRAID

3

 

JBOD

3

 

RAID 0

4

 

RAID 1

4

 

RAID (0+1)

4

 

RAID 3

5

 

RAID 5

5

1.4

Spare Drives

6

 

Global and Local Spare Drives

6

1.5

Identifying Drives

8

 

Flash Selected SCSI Drive

8

 

Flash All SCSI Drives

8

 

Flash All but Selected Drives

8

1.6

Rebuild

9

 

Automatic Rebuild and Manual Rebuild

9

 

1.

Automatic Rebuild

9

 

2.

Manual Rebuild

10

 

3. Concurrent Rebuild in RAID (0+1)

11

1.7

Logical Volume (Multi-Level RAID)

12

 

What is a logical volume?

12

 

Spare drives assigned to a logical volume?

14

 

Limitations:

15

 

Partitioning - partitioning the logical drive or partitioning the logical volume? . 15

 

Different write policies within a logical volume?

16

 

RAID expansion with logical volume?

16

 

Different controller settings using logical volume?

16

 

A logical volume with logical drives of different levels?

17

 

Multi-level RAID systems

17

Chapter 2 RAID Planning

2.1

Considerations

1

2.2

Configuring the Array:

5

 

2.2.1

Starting a RAID System

5

2.3

Operation Theory

7

 

2.3.1 I/O Channel, SCSI ID, and LUN

7

 

2.3.2

Grouping Drives into an Array

7

 

2.3.3

Making Arrays Available to Hosts

9

2.4

Tunable Parameters

10

Chapter 3 Accessing the Array through Serial Port and Ethernet

3.1 RS-232C Serial Port

1

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Compaq Infortrend manual Table of Contents, RAID Functions An Introduction, RAID Planning