Install megacli:

yum -y install http://dl.nux.ro/utils/megacli-storcli/MegaCli-8.07.07-1.noarch.rpm

(or from another trusted source)


List all info for raid adapter 0:

/opt/MegaRAID/MegaCli/MegaCli64 -AdpAllInfo -a0


List RAID array (logical drive/virtual drive) info:

/opt/MegaRAID/MegaCli/MegaCli64 -LDInfo -Lall -a0

List arrays and corresponding hard drives:

/opt/MegaRAID/MegaCli/MegaCli64 -LdPdInfo -a0 | grep -E "Virtual Drive:|Slot Number:" | xargs | sed -r 's/(Slot Number:)(\s[0-9]+)/\2,/g' | sed 's/(Target Id: .)/Physical Drives ids:/g' | sed 's/Virtual Drive:/\nVirtual Drive:/g'


List physical drives info:

/opt/MegaRAID/MegaCli/MegaCli64 -PDList -a0

Or the shorter list:

/opt/MegaRAID/MegaCli/MegaCli64 -PDList -a0 | egrep "Enclosure Device ID:|Slot Number:|Inquiry Data:|Error Count:|state"



Delete an array (array id 2 for example):

/opt/MegaRAID/MegaCli/MegaCli64 -CfgLdDel -L2 -a0


Create a RAID 0 array with drives numbers 3 and 4 at enclosure 32 (see PDList above):

/opt/MegaRAID/MegaCli/MegaCli64 -CfgLdAdd -r0[32:1,32:2] -a0


(If JBOD not supported/desired) Make all other Unconfigured Good drives into individual RAID 0 and enable writeback:

/opt/MegaRAID/MegaCli/MegaCli64 -CfgEachDskRaid0 WB RA Direct CachedBadBBU -a0


See map between raid devices and linux devices (needs sg3_utils installed):

$ sg_map -x
/dev/sg0  0 2 0 0  0  /dev/sda
/dev/sg1  0 2 1 0  0  /dev/sdb
/dev/sg2  0 2 2 0  0  /dev/sdc
/dev/sg3  0 2 3 0  0  /dev/sdd
/dev/sg4  0 2 4 0  0  /dev/sde

Explanation:

sg_device_name  host_number  bus  scsi_id  lun  scsi_type  linux_device_name
 /dev/sg0        0            2    0        0    0          /dev/sda