topic Re: rp3440 adding new disk in Operating System - HP-UX

rp3440 adding new disk

francesco_75 — Tue, 18 Apr 2006 04:22:49 GMT

Hi everybody.

I want to add another disk on a 9000/800/rp3440 server, because it needs free space .

I can't reach server in server room, and so I don't know if there is a free slot to add other disk on a than used (2x internal SCSI disk 34.6 GB).

On HP site i found this link for my model (I think .. )

http://h18000.www1.hp.com/products/quickspecs/12035_div/12035_div.HTML

This are my question:
1) how to know by remote how many disks is possible to add (how many sloot free)?

2) if it's possible, which type and size disks are supported ?

3) hot to migrate from 2 (mirrored disk) to 3 disks without loss data (which is mirroring configuration for 3 disks)?

Thanks in advance.
Francesco

Re: rp3440 adding new disk

Steven E. Protter — Tue, 18 Apr 2006 04:30:44 GMT

Shalom,

The diagram appears correct.

It has 3 disks.

ioscan -fnC disk

See how many disks are there. Remember to exclude fiber connected disks and the CD/DVD-ROM.

bdf

vgdisplay -v | more

This will give you the current layout including mirroring.

For supported disks see http://partsurfer.hp.com

I would need to see system information to advise you on 3. I'd have to know which filesystem is full for example from bdf.

It might be possible to use Ignite to back up the system and then restore it to a better configuration.

SEP

Re: rp3440 adding new disk

francesco_75 — Tue, 18 Apr 2006 05:10:25 GMT

SEP,

ioscan reply with 2 disks:

Class I H/W Path Driver S/W State H/W Type Description
=========================================================================
disk 1 0/1/1/0.0.0 sdisk CLAIMED DEVICE HP 36.4GST336753LC
/dev/dsk/c2t0d0 /dev/rdsk/c2t0d0
disk 2 0/1/1/0.1.0 sdisk CLAIMED DEVICE HP 36.4GST336753LC
/dev/dsk/c2t1d0 /dev/rdsk/c2t1d0

From bdf my fs full is /var (there is an HPOV application on it):
/dev/vg00/lvol8 16777216 16598768 178448 99% /var

Total free space not allocated as not over 300MB

3)In print_manifest i found:
Storage devices HW Path Interface
TEAC DV-28E-C 0/0/2/0.0.0.0
HP C1537A 11428 Mb 0/1/1/1.1.0 SCSI C1010 Ultra Wide Single-Ended
HP 36.4GST336753LC 34732 Mb 0/1/1/0.1.0 SCSI C1010 Ultra160 Wide LVD
HP 36.4GST336753LC 34732 Mb 0/1/1/0.0.0 SCSI C1010 Ultra160 Wide LVD

Which space is used by backup ?? because I have none!

thanks

Re: rp3440 adding new disk

Senthil Kumar .A_1 — Tue, 18 Apr 2006 05:45:41 GMT

Hi,

It would be better to analyze ,if you can give us the output of the following command.

ioscan -fn

Please attach the output instead of attaching.

Regards,
Senthil Kumar .A

Re: rp3440 adding new disk

Senthil Kumar .A_1 — Tue, 18 Apr 2006 05:47:50 GMT

I meant attach the output of "ioscan -fn" instead of pasting it in this thread ;).

Re: rp3440 adding new disk

Devender Khatana — Tue, 18 Apr 2006 05:54:37 GMT

Hi,

The info provided in the outputs above is enough to find that your system has only two internal disks and a slot is free. It can be very well used for an additional disk of supported type.

HTH,
Devender

Re: rp3440 adding new disk

Ninad_1 — Tue, 18 Apr 2006 06:11:37 GMT

Francesco,

1. As many have pointed out, you have 2 disks present and hence for your server you can have one more internal disk.
2. From the link you have provided yourself please look towards the end of that document and you will find that following disks are supported
36-GB 15K RPM Ultra320 SCSI Low Profile Hot Plug disk1 AD186A
73-GB 15K RPM Ultra320 SCSI Low Profile Hot Plug disk1 AD187A
146-GB 10K RPM Ultra320 SCSI Low Profile Hot Plug disk1 AD188A
300-GB 10K RPM Ultra320 SCSI Low Profile Hot Plug disk1 AD189A
3. Since you have 2 disks in your server and they are mirrored, also this must be your boot disk as well. I dont know if the following is really possible and how - someone else can comment on this - but just as an idea -
Do lvreduce for the mirrored volumes so as to vacate the 2nd disk.
Then add the 3rd disk - a 73 GB or 146 GB disk and make it bootable
Then mirror the volumes created on 1st and 2nd disks to the 3rd disk.

Comments from experts on feasibility and steps if above is possible.

Regards,
Ninad