hardware raid on external array enclosure?

drj003
drj003 used Ask the Experts™
on
Hi Guys,

Is it possible to use hardware raid on an external array enclosure?  The external enclosure will be connected by fibre channel adapters to the server.  The server is an IBM x3650.  There will be two fibre adapters that will be connecting the server to the enclosure.  The server will run Linux SLES 11.

If that's possible, is it possible to make the external array drives apart of the same hardware raid as the drives in the server?  Would that even be a good idea?

Let me know if you would like more information.

Thanks,
Josh
Comment
Watch Question

Do more with

Expert Office
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
Top Expert 2014
Commented:
Ys, it's loosely called a SAN although really it's a SAN attached storage system. e.g http://www-03.ibm.com/systems/storage/disk/ds3500/index.html

If you're only attaching it to one server though and don't need shared storage or hardware snapshots then it's cheaper to get the same performance through direct attached storage (i.e. a top end RAID controller with external ports and dumb external enclosures).

>is it possible to make the external array drives apart of the same hardware raid as the drives in the server

No, at least not with fc attached SAN although a top end RAID controller may have internal ports for the internal disk cages and external ports for more shelves in which case they can be in the same array because they're on the same controller.

Do more with

Expert Office
Submit tech questions to Ask the Experts™ at any time to receive solutions, advice, and new ideas from leading industry professionals.

Start 7-Day Free Trial