How to find the RAID level in HP-UX 11.31

[ajyeshB]

Hello everybody,
How to find RAID level ( like 0,1, or RAID-5) in HP-UX?

[Torsten.]

Foexternal arrays you need array specific tools, e.g. xpinfo and evainfo.

For internal raids it depends on the controller type, e.g. smartarray or the default sas chip, tools are sautil/saconfig and sasmgr.

Do you have an example "ioscan -fn" output?

[vishnu.khandare]

Hi Aiyesh,
If u have mirrored the disk, with copy 1 or 2 then u will find in lvdisplay -v
MIRROR copies 1/2 if mirrored n 0 if not mirrored, This is RAID 1 Mirroring, in this way u can check the its RAID 1 or not, and HP Unix Only Supports RAID level0 and 1.

If u want to check hardware RAID use below command.

sautil /dev/cisso

The above command gives whether in which raid level the vg is mirrored

Vishnu Khandare

[ajyeshB]

Hello
Thanks for reply.
I want to know only the Which RAID is configured ?
Is RAID0, RAID 1 or RAID 5

[Torsten.]

LVM can do RAID 0 or RAID 1; VXVM (at least in the past) can do RAID 5 too; for hardware RAIDs see my previous post.

[vishnu.khandare]

Hi Aiyesh,

Please assign the points....

[Hakki Aydin Ucar]

You have to put output of ioscan -fn that Torsten mentioned OR sautil /dev/ciss6 as Vishnu stated to be sure first.
http://docs.hp.com/en/J6369-90026/ch06s04.html

->>
in addition to RAID levels :

RAID 0: Disk striping

RAID 1: Disk mirroring

RAID 0/1: Combination of mirroring and striping. Also called RAID 1/0 or RAID 10

RAID 2: Multiple check-disks using Hamming code

RAID 3: Bit/Byte-striped, single check-disk using parity

RAID 4: Block-striped, single check-disk using parity

RAID 5: Block-striped, data and parity spread over all disks

RAID 5 DP: RAID 5 with two parity segments spread over all disks instead of one

RAID S: Block-striped with a stripe group of four and a stripe depth of one (a special case of RAID 5 used on EMC Symmetrix disk arrays)

AutoRAID: HP's term for an adaptive RAID system that migrates data automatically between RAID 1/0 and RAID 5 or RAID 5 DP

[Emil Velez]

if you have a blade server with the built in SAS RAID controller you can use sasmgr command to find out if the disks on the blade are configured in a raid set.

ioscan -funCdisk will show IR DISK if the disk is part of the SAS array.