Dell 5 series User Manual

Contents

Dell 5 series User Manual Manual pdf 6 page image

4 ContentsBattery Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Introduction to Write Cache Policy . . . . . . . . . . . . . . . . . . . . . 19Write-Back versus Write-Through . . . . . . . . . . . . . . . . . . . . . 19How Firmware Manages Cache . . . . . . . . . . . . . . . . . . . . . . 19Conditions Under Which Write-Back is Employed . . . . . . . . . . . . . 20Conditions Under Which Write-Through is Employed . . . . . . . . . . . 20Conditions Under Which Forced Write-BackWith No Battery is Employed . . . . . . . . . . . . . . . . . . . . . . . . 20RAID Configuration Information . . . . . . . . . . . . . . . . . . . . . . . . . 21Fault Tolerance Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Physical Disk Hot Swapping . . . . . . . . . . . . . . . . . . . . . . . . 22Patrol Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Patrol Read Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Patrol Read Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Behavior Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Blocked Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233 Hardware Installation and Configuration . . . . . . . . . . . . . 25Installing the PERC 5/E Adapter . . . . . . . . . . . . . . . . . . . . . . . . . 25Installing the Transportable Battery Backup Unit (TBBU)for PERC 5/E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Installing the DIMM on a PERC 5/E Adapter. . . . . . . . . . . . . . . . . . . 28Transferring a TBBU Between Controllers . . . . . . . . . . . . . . . . . . . 30Removing the PERC 5/E Adapter . . . . . . . . . . . . . . . . . . . . . . 30Removing the DIMM and Battery from a PERC 5/E Adapter. . . . . . . . . . . 31Installing the PERC 5/i Adapter . . . . . . . . . . . . . . . . . . . . . . . 33Removing the PERC 5/i Adapter . . . . . . . . . . . . . . . . . . . . . . . . . 35Removing the DIMM from a PERC 5/i Card . . . . . . . . . . . . . . . . . . . 37Disconnecting the BBU from a PERC 5/i Adapter or a PERC 5/i. . . . . . . . . 38Dell_PERC5_UG.book Page 4 Tuesday, February 13, 2007 6:02 PM