Contents - NEC N8103-91 User Manual

Contents

Contents...............................................................................................................................73
Chapter 1 Overview .........................................................................................................75
1. Notes on Use - Always Follow These Notes - .........................................................................75
1-1. Installation of MSM.........................................................................................................75
1-2. Preventive Maintenance by Consistency Check ..............................................................75
2. Specification..........................................................................................................................76
3. Features of Disk Array Controller ...........................................................................................77
4. Names and Functions of Sections..........................................................................................78
5. Hardware Setup ....................................................................................................................80
5-1. Prepare for setup ...........................................................................................................81
5-2. Installing Additional Battery.............................................................................................82
5-3. Installing the Disk Array Controller ..................................................................................83
5-4. Connecting SAS Cable...................................................................................................85
Chapter 2 RAID ...............................................................................................................87
1. Overview of RAID..................................................................................................................87
1-1. What is RAID (Redundant Array of Inexpensive Disks)? ..................................................87
1-2. RAID Levels...................................................................................................................88
1-3. Disk Group ....................................................................................................................89
1-4. Virtual Disk ....................................................................................................................90
1-5. Parity.............................................................................................................................90
1-6. Hot-Swap.......................................................................................................................90
1-7. Hot-Spare Disk...............................................................................................................91
2. RAID Levels..........................................................................................................................92
2-1. Characteristics of RAID Levels .......................................................................................92
2-2. RAID0............................................................................................................................92
2-3. RAID1............................................................................................................................93
2-4. RAID5............................................................................................................................93
2-5. Spanning of RAID1.........................................................................................................94
2-6. Spanning of RAID5.........................................................................................................94
Chapter 3 Features of Disk Array Controller .....................................................................95
1. Rebuild .................................................................................................................................95
1-1. Manual Rebuild..............................................................................................................95
1-2. Auto Rebuild ..................................................................................................................95
2. Patrol Read...........................................................................................................................97
3. Consistency Check................................................................................................................97
4. Background Initialize .............................................................................................................98
5. Reconstruction ......................................................................................................................99
5-1. Removed physical drive .................................................................................................99
5-2. Migration only ................................................................................................................99
5-3. Migration with addition....................................................................................................99
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