Only one disk on my bl860c

[JimKali]

I have two SAS disks on my Server blade but when I see in ioscan I have find only one disk... On the disk.. both the led's are blinking green

I am unable to understand y it is not visible in ioscan

[Torsten. · Accepted solution]

Please post your

# ioscan -fn

I think you may have a hardware RAID configured ...

[Torsten.]

Try this command and see if you find LOGICAL DRIVES:

# sasmgr get_info -D /dev/sasd0 -q raid

[JimKali]

# ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
==============================================================================
disk 0 0/2/1/0.0.0.0.0 sdisk CLAIMED DEVICE HP IR V
olume
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
/dev/dsk/c0t0d0s1 /dev/rdsk/c0t0d0s1
/dev/dsk/c0t0d0s2 /dev/rdsk/c0t0d0s2
/dev/dsk/c0t0d0s3 /dev/rdsk/c0t0d0s3

# sasmgr get_info -D /dev/sasd0 -q raid

Wed Oct 1 09:47:24 2008

---------- LOGICAL DRIVE 1 ----------

Raid Level : RAID 1
Volume sas address : 0x53a47eee4c5f950
Device Special File : /dev/rdsk/c0t0d0
Raid State : OPTIMAL
Raid Status Flag : ENABLED
Raid Size : 139236
Rebuild Rate : 0.00 %
Rebuild Progress : 100.00 %

Participating Physical Drive(s) :

SAS Address Enc Bay Size(MB) Type State

0x500000e01cbf07f2 1 2 140014 SECONDARY ONLINE
0x500000e01cc14652 1 1 140014 PRIMARY ONLINE

What is H/w Raid...
I do not know who has configured it.. Can the other disk be used as well in future

[Torsten.]

As you can see, the both disks are mirrored by hardware - if 1 fails, the data is still on the second. This is for redundancy.

Both disks are currently in use, none is empty.

[JimKali]

Can this h/w RAID or internal mirrioring be removed when we get an external storage..

[Torsten.]

You can "destroy" the RAID using the controller setup utility, but you probably need to backup/restore the data, see also

http://docs.hp.com/en/J6369-90071/index.html

If you have external storage, why not keep this config?

Believe me, replacing a SAS disk and restore the configuration could be a pain, but with your current setup it is just plug and play.

[JimKali]

Opps... I had another query...

But can anyone ever create a VG01 on it...

Or is it safe to use the existing configuration...

[JimKali]

??


Opps... I had another query...

But can anyone ever create a VG01 on it...

Or is it safe to use the existing configuration...

[Torsten.]

it is safe to use the existing configuration...

The disk is already in use unless you delete the whole array.