topic Re: Rules for adding disk enclosures to EVA8000 in Disk Enclosures

Rules for adding disk enclosures to EVA8000

Robert Cilia — Tue, 11 Sep 2007 12:01:28 GMT

Is there a best practice in the number of disk enclosures that should be added to an EVA8000 when expanding the EVA? Our customer currently has an EVA8000 with 8 enclosures and wants to add more disk. The EVA has 4 loop switches as well. Should the customer buy the enclosures in pairs to distribute the new disks between loops 1 and 2 or could they just buy one shelf and load up a single loop?

Thanks...Robert.

Re: Rules for adding disk enclosures to EVA8000

Rob Leadbeater — Tue, 11 Sep 2007 13:22:03 GMT

Hi Robert,

According to the QuickSpecs, in the Optional Hardware Accessories section:

"It is recommended that drive enclosures be added in pairs to a maximum of 12 per cabinet."

http://h18006.www1.hp.com/products/quickspecs/12236_div/12236_div.HTML

Hope this helps,

Regards,

Rob

Re: Rules for adding disk enclosures to EVA8000

Peter Mattei — Wed, 12 Sep 2007 00:53:03 GMT

It is supported upgrading by one Enclosure only, but HP recommendation is 2 at a time for symmetry.

Find attached the disk enclosure online installation guide.

Note: You can only install up to 2C12D online. If you go >12D you need a second rack. To hook up of the second rack you need to open the address bus which requires a short downtime.

Cheers
Peter

Re: Rules for adding disk enclosures to EVA8000

Robert Cilia — Wed, 12 Sep 2007 09:13:45 GMT

Thanks all that's what I was looking for.

Regards...Robert.

Re: Rules for adding disk enclosures to EVA8000

Rob Leadbeater — Wed, 12 Sep 2007 09:29:58 GMT

Cool. Remember to say thanks by assigning points...

http://forums1.itrc.hp.com/service/forums/helptips.do?#28

Cheers,

Rob

Re: Rules for adding disk enclosures to EVA8000

tkc — Thu, 13 Sep 2007 05:41:09 GMT

some white papers on storage array which you may find useful :

http://h18006.www1.hp.com/storage/arraywhitepapers.html

i am sure one of the best practices document will be of usage to you.