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Perfomomance on va7100 when i add a new disk

Gonzalo Sanchez Miranda
Occasional Contributor

Perfomomance on va7100 when i add a new disk

I have someone va7100 with 9 disk, 36GB 10k rpm, i buy someone disk, 26GB 15k RPM.

when i add the new disk, the perfomance is very bad.

The va7100 has firmware hp17, the old disks have firmware hp08 and the new disk has firmware hp05.

I need your help

Thanks
8 REPLIES
RAC_1
Honored Contributor

Re: Perfomomance on va7100 when i add a new disk

What does hp say about it?? Different firmware for disks works. But not sure it it will create such a problem?? How array has been configured??

Does armperf say anything??

Anil
There is no substitute to HARDWORK
Gonzalo Sanchez Miranda
Occasional Contributor

Re: Perfomomance on va7100 when i add a new disk

I have R5. Hp say update firmware of va7100 to hp20. I don't know if this fix the problem.

Thanks
Torsten.
Acclaimed Contributor

Re: Perfomomance on va7100 when i add a new disk

current firmware for this disk array is HP20, but it's not a problem to run HP17. HP is using differnet disks, so they have different firmware, even if capacity is equal. You need to know the exact disk-type (e.g. ST318xxxFC) to determine the current disk-firmware.
But if you insert the disks, the array is reformatting the disk from 512b blocks to 520 and re-balacing itself. Depending on the priority of this process the performance may go down for short time (some hours). Don't worry about.

Hope this helps!
Regards
Torsten.

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Mahesh Kumar Malik
Honored Contributor

Re: Perfomomance on va7100 when i add a new disk

Hi

It is not advisable to mix drives of different speeds for performance reasons

Regards
Mahesh
Gonzalo Sanchez Miranda
Occasional Contributor

Re: Perfomomance on va7100 when i add a new disk

Hi

I put the new disk on friday night, after 48 hours the perfomance is bad, the old disk are st336605f and the new disk is st336753fc.

Thanks

Gonzalo
Torsten.
Acclaimed Contributor

Re: Perfomomance on va7100 when i add a new disk

as far as I know, latest firmware for st336605fc is HP09 and st336753fc is HP05.So it seems not to be an firmware issue. perhaps you can provide an "armdsp -a your_array" output for more detailed view.

Hope this helps!
Regards
Torsten.

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Gonzalo Sanchez Miranda
Occasional Contributor

Re: Perfomomance on va7100 when i add a new disk

Hi

I put the new disk on friday night, after 48 hours the perfomance is bad, the old disk are st336605f firmware HP08 and the new disk is st336753fc firmware HP05.

Attach configuration of va7100

Regards and thanks

Gonzalo

Torsten.
Acclaimed Contributor

Re: Perfomomance on va7100 when i add a new disk

looks like the array was down when you got this information. The problem is, also your new disk in slot 10 is down. Maybe this disk is gone and slows your array down. But you can try to re-add the disk by typing:

armcfg -D M/D10 -a your_array_alias

What color is the disk LED? Send the armdsp -a output again.

Hope this helps!
Regards
Torsten.

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