topic Re: P2000 high disk read\write speed required in MSA Storage

P2000 high disk read\write speed required

HPSupportHelp — Sun, 11 Dec 2011 19:14:52 GMT

Hello.

I’m looking for a storage solution us use as my netbackup media server deduplication pool.

I was thinking about using the HP P2000. I have a HP DL380 G7 with plenty of memory and processing power so this isn’t a problem.

The storage for the deduplication needs to have a minimum disk read\write speed of 130 MB/Sec, so I want it to be at least 200 MB/sec.

For this environment I need about 18TB of raw storage presented to the server, which needs to be a single logical drive (Netbackup uses a single drive on the server as the deduplication storage destination) The only way it seems I can achieve this amount of space is by using 2TB drives at 7.2K.

I’m not sure this is going to give me the disk read\write speed I’m after.

I then decided that using two disk shelves with smaller faster disks would be the answer. This however causes me more problems because the maximum amount of disks I can use in a RAID 5 configuration on the P2000 is 16 disks, which then doesn’t meet my storage needs.

Can anyone tell me what sort of read\write speed I would get from 11 LFF disks at 7.2 each in a RAID 5 configuration? (A single shelf can is 12LFF disks so I’d have RAID 5 across 11 and one hot spare)

Could anyone suggest a good workaround for my storage and performance requirements?

Many thanks

Re: P2000 high disk read\write speed required

Johan Guldmyr — Mon, 12 Dec 2011 15:47:57 GMT

You could also stripe two LUNs on the server.

Re: P2000 high disk read\write speed required

HPSupportHelp — Mon, 12 Dec 2011 17:02:10 GMT

Thanks for the response.

I read that it’s best not to stripe volumes in windows for performance, although I can’t quite remember where L

However, I’ve worked out that my storage capacity needs can be reduced to about 11TB which should help things a little.

Because my storage capacity needs have changed, which disks and raid configuration should I go for in the P2000 (either in a single shelf or two shelf setup) in order to achieve the read\write speed I’m after?

And bearing in mind what I mentioned above - I need to present this to the server as a single volume

Thanks again