MegaRAID for VercoiΒΆ

To simplify disk space management, the disks in each vercoi are combined in a RAID-5, yielding approximately 1.5 TB of usable space.

As MegaRAID cannot change RAID units currently being used, the easiest way to configure this is to

  • attach a serial console via ipmitool
  • reset the server
  • during boot press control-Y for the MegaRAID Preboot CLI
  • enter MegaCLI commands to configure the RAID (see later)
  • enter q to quit
  • use ipmitool to power the server off and back on

Note: this erases the disk contents; you will need to reinstall at this point.

The Preboot CLI takes the same arguments as the megacli command line tool, but you leave out the command itself. That is, instead of megacli -LdPdInfo -a0 you type -LdPdInfo -a0.

The MegaCLI commands to configure vercoi are:

-CfgClr -a0
-CfgLDDel -Lall -a0
-CfgLdAdd -r5'[252:0,252:1,252:2,252:3]' WB RA Cached NoCachedBadBBU -a0