Disk showing product id as LOGICAL VOLUME

[Torsten.]

BTW, did you notice the device file in this section?

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

Device File = c1t0d1 <<====
RAID Level = 1+0
Size = 419947 MB
Stripe Size = 128 KB
Status = OK

[mjos]

Got it, thanks a lot.

[TTr]

The server OS does not see the physical disks, it sees what the raid controllers present out. The LOGICAL VOLUME here has the same meaning as a LUN, it has nothing to do with the logical volume terminology that you use in LVM. As far as the OS is concerned, it is a disk that you can use to assign storage. (Note it is in capital letter just like any other disk signature).

You have 16 disks in your server not 8. The rx6600 has two disk cages (enclosures) of 8 disks each. Each enclosure is connected to one of the two P400 controllers.

For the first enclosure, all 8 disks are bound in a raid1+0 array (mirrored pairs) and into one logical volume of 560GB. Logical drive 0 at path

For the second enclosure, 2 disks are bound into one mirrored pair and one logical volume of 139GB and the remaining six disks are bound into 3 mirrored pairs, logical volume 1 of size 419GB.

You have to use these three array-logical-volumes the same way you use any other physical disk or LUN and put them under LVM and create LVM-logical-volumes over them.

The signature on the disk that ioscan and diskinfo read should not have been "LOGICAL VOLUME" it should have been something like "SA LUN" or "LOGICAL DISK"

[mjos]

Thanks, In this case if one of the disk goes bad, will it affect the entire logical volume. Is there any way to detect if one of the disk goes bad? Will the data be intact on the other disks?

[TTr]

You can have several disks go bad and not lose data as long as the are not two bad disks in the same mirrored pair. So theoretically you can have 8 disks go bad and still continue to function as far as the OS is concerned.


You should be able to set up monitoring for the P400 controllers via the hp-ux system monitoring utilities, EMS/STM.

[Torsten.]

This is one reason behind each RAID.

You will find messages in syslog, root's mailbox, your mailbox (if configured), HP SIM or somewhere else too.

You can always get the status via the sautil/saconfig commands.


To swap a failed disk, just swap it and you are done.

[TTr]

Looks like you are new to the SA controllers. Take a look at this document

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00687518/c00687518.pdf

And this one (page 5 for STM/EMS monitoring)
http://docs.hp.com/en/J6369-90038/J6369-90038.pdf

[mjos]

Thanks, I will go through those links.