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Contents
1 About The Shared PERC 8 Card..........................................................................6
Configurations of the Shared PERC 8 card..........................................................................................6
Specifications of a Shared PERC 8 card............................................................................................... 7
Supported Operating Systems..............................................................................................................9
Best Practices For Shared PERC 8........................................................................................................ 9
Related Documentation........................................................................................................................9
Locating your system Service Tag......................................................................................................10
Contacting Dell....................................................................................................................................10
Documentation Feedback...................................................................................................................11
2 Shared PERC 8 Card Features...........................................................................12
Physical Disk Power Management......................................................................................................12
Consistency Checks............................................................................................................................ 12
Virtual Disk Initialization...................................................................................................................... 12
Background Initialization Of Virtual Disks.....................................................................................13
Full Initialization Of Virtual Disks...................................................................................................13
Fast Initialization Of Virtual Disks.................................................................................................. 13
Physical Disk Roaming.........................................................................................................................13
Using Physical Disk Roaming........................................................................................................ 14
FastPath................................................................................................................................................14
Virtual Disk Migration.......................................................................................................................... 14
Migrating Virtual Disks If The Target System Is Turned Off......................................................... 15
Migrating Virtual Disks If The Target System Is Turned On..........................................................15
Virtual Disk Cache Policies..................................................................................................................15
Virtual Disk Write Cache Policies.................................................................................................. 16
Write-Back .................................................................................................................................... 16
Conditions Under Which Write-Back Is Employed......................................................................16
Conditions Under Which Forced Write-Back With No Battery Is Employed.............................. 16
Write-through................................................................................................................................16
Conditions under which write-through is employed...................................................................17
Virtual Disk Read Cache Policies...................................................................................................17
Physical Disk Write Cache Policy........................................................................................................ 17
Fault Tolerance.................................................................................................................................... 17
The SMART Feature....................................................................................................................... 18
Patrol Read.....................................................................................................................................18
Physical disk failure detection.......................................................................................................19
Physical Disk Hot Swapping.......................................................................................................... 19
Auto Replacement Of A Virtual Disk Member And Revertible Hot Spares.................................. 19