disk was not downed

[Amir Fadaghi]

Hello array gurus;
I have a K class server with 12h dis array. I configured LUN0 with all the disks (12X9GB) in it. When I tried to write to the filesystems I keep getting the "HOST SCSI PARITY ERROR" and, was not able to run any disk commands like bdf. It would hang. I had to shutdown to single user mode, deactivate VG01, fsck all the filsystems and come up as multiuser. I am thinking may be one of the disks are bad. I'd like to create a LUN with only 2 disks in it. To do that I use "exclude". The problem is it only allows me to exlude A6. For the rest I get "Disk was not downed, data would be lost". Am I missing anything or steps. I do not care about any data since this server is new to be setup. Thank you for your time and input.

[Emiel van Grinsven]

Hi,

first, check your disk array.
amdsp -a
then check the disks,

amdsp -l [lun_name]

Can you see all the disks?
if there is no data on them, use amdsp (see man for exact syntax) to remove them from lun configuration and start again.

Good luck, E.

[Rainer von Bongartz]

Amir,

when creating a LUN you cannot select the discs that will be used for the LUN; the array will use all disks that are in your cabinet.

You can down one disk because the redundancy of the array will allow this.

Regards
Rainer

[Helen French]

Hi Amir,

I would suggest you to remove the current LUN settings and reconfigure it, as you don't have any data setup on that. You can use the console menu for doing this. Also it depends on the RAID level too.

Remember that if you are going to create a LUN with 2 disks, then you cannot have RAID-5 setup on that, as the minimum disks should be 3. You can do RAID-1 or RAID-0 on that. Also before configuring it, check all disks for any errors. I would suggest you to read these information before you start configuring:

http://www.hp.com/products1/storage/disk_arrays/midrange/12h/infolibrary/index.html

http://www.hp.com/products1/storage/disk_arrays/midrange/12h/index.html

HTH,
Shiju

[Amir Fadaghi]

I forgot to mention that I deleted the LUN0 I created first time. Is there anyway to isolate one or more disks by creating 2, 3,... LUNs and then find out what LUN is having problem?

thanks

[Emiel van Grinsven]

Hi,

See man ammgr for more details on this.

grt, E.