topic Re: RAID10 > RAID5 for more space in StoreVirtual Storage

RAID10 > RAID5 for more space

andmjones — Tue, 25 Jan 2011 09:12:37 GMT

Good morning

Our 4 P4500 nodes are currently setup in 2 sites (2 each) with all volumes set at Network RAID 10. We wanted to physically separate our 4 nodes and utilise network RAID 5 but im a bit confused about how to set the sites up to do this, can anyone help?

Cheers

Andrew

Re: RAID10 > RAID5 for more space

Sudhakar Subramaniam — Tue, 25 Jan 2011 09:58:06 GMT

Hi,
Please refer page 55 on the below document which will tell you how to configure and how to migrate.

http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01865545/c01865545.pdf

Re: RAID10 > RAID5 for more space

andmjones — Tue, 25 Jan 2011 10:24:08 GMT

Thanks Sudhakar, I cant find the information in this document, it only seems to describe altering disk RAID levels within individual nodes?

Andrew

Re: RAID10 > RAID5 for more space

Sudhakar Subramaniam — Tue, 25 Jan 2011 10:32:05 GMT

N/W RAID 5 in multisite is normally not supported and is not considered as best configuration instead what always is prefered is mirroring
refer page 8 of below document.

http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c01727773/c01727773.pdf

Re: RAID10 > RAID5 for more space

andmjones — Tue, 25 Jan 2011 10:40:07 GMT

I understand, are there drawbacks to having a standard cluster over multisite if the nodes were stored in 4 different comms rooms? We are really keen to increase the capacity.