Specifications

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Contents
1 Introduction................................................................................................. 1
HP NetRAID-1M and 2M Adapters................................................................. 1
Features of the HP NetRAID-1M and 2M Adapters........................................ 1
Channels and Devices............................................................................... 1
Adapter Hardware and Battery-backed Cache ........................................... 4
SCSI Termination and Firmware ............................................................... 5
New Features of HP NetRAID-1M and 2M Adapters.................................. 5
Physical Disk Roaming and Data Migration ............................................... 6
Fault-Tolerance and Management Features .............................................. 7
Changing Capacity and RAID Levels......................................................... 7
About This Guide........................................................................................... 8
Other Information Sources............................................................................. 8
Tools You May Need..................................................................................... 9
2 RAID Overview........................................................................................... 11
RAID Overview ........................................................................................... 11
Physical Drives........................................................................................ 11
Arrays...................................................................................................... 11
Hot Spares.............................................................................................. 12
Logical Drives ......................................................................................... 12
Understanding RAID Levels......................................................................... 13
Arrays with No Redundancy: RAID Level 0.............................................. 14
Basic Arrays with Redundancy: RAID Levels 1 and 5 .............................. 15
Spanned Arrays: RAID Levels 10 and 50................................................. 17
3 Installation and Configuration Overview ................................................. 23
4 Planning..................................................................................................... 25
Overview..................................................................................................... 25
Step A. Plan Your Hardware........................................................................ 25
Gather Information.................................................................................. 25
Sample Worksheet A............................................................................... 26
Multiple Adapters..................................................................................... 27
Boot Order .............................................................................................. 27
Channels................................................................................................. 27
Step B. Plan Arrays and Logical Drives ....................................................... 28