Users Guide

Table Of Contents
Chapter 19: Frequently Asked Questions.................................................................................... 154
Why Is A Rebuild Not Working..................................................................................................................................... 154
How To Avoid Removing The Wrong Disk.................................................................................................................154
How Can I Safely Remove Or Replace A Physical Disk.......................................................................................... 154
How Do I Recover From Removing The Wrong Physical Disk..............................................................................154
How Do I Identify The Firmware Version That Is Installed.................................................................................... 155
Which Controllers Do I Have.........................................................................................................................................155
Which RAID Level Is Best For Me............................................................................................................................... 155
Chapter 20: Supported Features................................................................................................ 156
Supported Features On PERC Hardware Controllers.............................................................................................156
Controller Tasks Supported On PERC Hardware Controllers...............................................................................157
Battery Tasks Supported On PERC Hardware Controllers................................................................................... 160
Connector Tasks Supported By PERC Hardware Controllers...............................................................................161
Physical Disk Tasks Supported By PERC Hardware Controllers..........................................................................162
Virtual Disk Tasks Supported By PERC Hardware Controllers.............................................................................164
Virtual Disk Specifications For PERC Hardware Controllers.................................................................................166
RAID Levels Supported By PERC Hardware Controllers........................................................................................ 171
Read, Write, Cache And Disk Cache Policy Supported By PERC Hardware Controllers............................... 172
Supported Features On The PERC Software RAID Controllers........................................................................... 173
Controller Tasks Supported On The PERC Software RAID Controllers....................................................... 174
Physical Disk Tasks Supported By The PERC Software RAID Controllers.................................................. 174
Virtual Disk Tasks Supported By The PERC Software Controllers................................................................175
Virtual Disk Specifications For PERC Software RAID Controllers................................................................. 175
RAID Levels Supported By The PERC Software RAID Controllers................................................................ 177
Read Write Cache And Disk Cache Policy Supported By The PERC Software RAID Controllers..........177
Enclosure Support On The PERC Software RAID Controllers........................................................................178
Chapter 21: Determining The Health Status For Storage Components........................................ 179
Health Status Rollup - Battery Is Charging Or Dead...............................................................................................179
Health Status Rollup - Physical Disks In A Virtual Disk Are Failed Or Removed.............................................. 180
Health Status Rollup - Physical Disks In A Virtual Disk Are Unsupported, Partially, Or Permanently
Degraded....................................................................................................................................................................... 180
Health Status Rollup - All Physical Disks In A Virtual Disk Are In Foreign State.............................................. 180
Health Status Rollup - Some Physical Disks In A Virtual Disk Are In Foreign State.........................................181
Health Status Rollup - Virtual Disk Is Degraded, Physical Disks Are Failed Or Rebuilding............................. 181
Health Status Rollup - Virtual Disk Is Failed...............................................................................................................181
Health Status Rollup - Unsupported Firmware Version.......................................................................................... 181
Health Status Rollup - Enclosure Power Supply Failed Or Power Connection Removed..............................182
Health Status Rollup - One Enclosure EMM Is Failed.............................................................................................182
Health Status Rollup - Lost Both Power Connections To The Enclosure......................................................... 182
Health Status Rollup - One Or More Physical Disks Are Failed............................................................................182
Health Status Rollup - Physical Disk Is Rebuilding.................................................................................................. 183
Appendix A: Identifying the series of your Dell EMC PowerEdge servers................................... 184
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