How to interpret this output from MegaCli?
Take a look: http://globalroot.wordpress.com/2013/06/18/megacli-raid-levels/
# Explanation of Raid Levels:
['Primary-0, Secondary-0, RAID Level Qualifier-0'] = RAID-0
['Primary-1, Secondary-0, RAID Level Qualifier-0'] = RAID-1
['Primary-5, Secondary-0, RAID Level Qualifier-3'] = RAID-5
['Primary-6, Secondary-0, RAID Level Qualifier-3'] = RAID-6
['Primary-1, Secondary-3, RAID Level Qualifier-0'] = RAID-10
And match:
$ sudo /opt/MegaRAID/MegaCli/MegaCli64 -LDInfo -Lall -aALL | grep RAID
RAID Level : Primary-1, Secondary-0, RAID Level Qualifier-0
RAID Level : Primary-1, Secondary-3, RAID Level Qualifier-0
$ sudo ./megasasctl
a0d0 136GiB RAID 1 1x2 optimal
a0d1 272GiB RAID 10 2x2 optimal
Your answer appears to start at page 13 of this SNIA specification http://www.snia.org/sites/default/files/SNIA_DDF_Technical_Position_v2.0.pdf
Primary-1 "Mirrored array"
Secondary-3 "Spanned 0x03 A combination of stripping and concatenations involving Basic VDs of different sizes."
RAID Level Qualifier-0 "Mirroring across two extents"
Since MegaCli is not terribly well documented we can at least compare outputs
My disks are in raid 10 (I checked in the bios)
from MegaCLI:
RAID Level: Primary-1, Secondary-0, RAID Level Qualifier-0
Versions
================
Product Name : ServeRAID M5015 SAS/SATA Controller
Serial No : SV13409496
FW Package Build: 12.12.0-0047
Device Present
================
Virtual Drives : 1
Degraded : 0
Offline : 0
Physical Devices : 6
Disks : 4
Critical Disks : 0
Failed Disks : 0