Users Guide

Table Of Contents
Chapter 15: Managing storage devices....................................................................................... 201
Understanding RAID concepts.....................................................................................................................................202
What is RAID.............................................................................................................................................................. 202
Organizing data storage for availability and performance.............................................................................. 203
Choosing RAID levels .............................................................................................................................................. 204
Comparing RAID level performance..................................................................................................................... 209
Supported controllers.....................................................................................................................................................210
Supported enclosures......................................................................................................................................................211
Summary of supported features for storage devices..............................................................................................211
Inventorying and monitoring storage devices...........................................................................................................215
Monitoring storage devices using web interface............................................................................................... 216
Monitoring storage devices using RACADM....................................................................................................... 216
Monitoring backplane using iDRAC settings utility............................................................................................216
Viewing storage device topology.................................................................................................................................216
Managing physical disks.................................................................................................................................................216
Assigning or unassigning physical disk as global hot spare..............................................................................217
Converting a physical disk to RAID or non-RAID mode....................................................................................218
Erasing physical disks................................................................................................................................................218
Erasing SED device data.......................................................................................................................................... 219
Rebuild Physical Disk................................................................................................................................................220
Managing virtual disks................................................................................................................................................... 220
Creating virtual disks.................................................................................................................................................221
Editing virtual disk cache policies..........................................................................................................................222
Deleting virtual disks.................................................................................................................................................223
Checking virtual disk consistency......................................................................................................................... 223
Initializing virtual disks..............................................................................................................................................223
Encrypting virtual disks............................................................................................................................................224
Assigning or unassigning dedicated hot spares................................................................................................. 224
Managing virtual disks using web interface........................................................................................................ 227
Managing virtual disks using RACADM................................................................................................................228
RAID Configuration Features....................................................................................................................................... 228
Managing controllers......................................................................................................................................................229
Configuring controller properties.......................................................................................................................... 229
Importing or auto importing foreign configuration............................................................................................233
Clearing foreign configuration................................................................................................................................234
Resetting controller configuration........................................................................................................................ 235
Switching the controller mode...............................................................................................................................235
12 Gbps SAS HBA adapter operations................................................................................................................. 237
Monitoring predictive failure analysis on drives.................................................................................................237
Controller operations in non-RAID mode or HBA mode...................................................................................237
Running RAID configuration jobs on multiple storage controllers................................................................. 238
Manage Preserved cache........................................................................................................................................238
Managing PCIe SSDs..................................................................................................................................................... 238
Inventorying and monitoring PCIe SSDs............................................................................................................. 239
Preparing to remove PCIe SSD............................................................................................................................. 239
Erasing PCIe SSD device data................................................................................................................................241
Managing enclosures or backplanes...........................................................................................................................242
Configuring backplane mode.................................................................................................................................. 242
Viewing universal slots.............................................................................................................................................245
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