HP SureStore E Disk Array 12H User's and Service Manual (C5445-90901, September 1999)

4
Enabling/Disabling Auto Include.......................................................................................................... 72
Enabling/Disabling Auto Rebuild ......................................................................................................... 72
Starting/Stopping a Rebuild.................................................................................................................. 72
Setting the Controller SCSI ID.............................................................................................................. 73
Changing Other Controller SCSI Settings ............................................................................................73
Switching Controllers ...........................................................................................................................73
Testing a Controller.............................................................................................................................. 73
Formatting the Array............................................................................................................................ 74
Shutting Down the Array....................................................................................................................... 74
Setting the Language............................................................................................................................. 74
U
SING CONTROL PANEL MENUS................................................................................................................ 75
Language............................................................................................................................................... 76
Cntrl Changes ....................................................................................................................................... 76
Disk Changes ........................................................................................................................................ 79
Logical Drv Changes ............................................................................................................................ 81
Shutdown...............................................................................................................................................82
View Settings......................................................................................................................................... 82
CHAPTER 4. CONCEPTS AND MANAGEMENT................................................................................ 83
D
ISK ARRAYS IN BRIEF.............................................................................................................................. 83
D
ISK ARRAY FEATURES............................................................................................................................. 84
Dynamic Data Migration......................................................................................................................84
Logical Drives (LUNs).......................................................................................................................... 88
Auto Include.......................................................................................................................................... 89
Active Hot Spare ................................................................................................................................... 89
Auto Rebuild..........................................................................................................................................90
Auto Failover ........................................................................................................................................ 91
Shutdown...............................................................................................................................................92
D
ISK ARRAY HARDWARE .......................................................................................................................... 93
Disk Array Controller Module..............................................................................................................93
Disk Modules ........................................................................................................................................ 95
Power Modules ..................................................................................................................................... 98
Fan Modules ......................................................................................................................................... 98
SCSI Bus Topology................................................................................................................................ 99
M
ANAGING THE DISK ARRAY CAPACITY................................................................................................. 100
Sample Capacity Allocation................................................................................................................ 101
Capacity Management Strategies .......................................................................................................103
U
PGRADING THE CAPACITY OF A FULLY-LOADED DISK ARRAY ............................................................. 104
O
PTIMIZING PERFORMANCE..................................................................................................................... 105
Controller Data Path .......................................................................................................................... 106
Performance Metrics........................................................................................................................... 107
Rebuild Impact on Performance ......................................................................................................... 109
Write Working Set ............................................................................................................................... 109