Disk redundancy/failover on V880

From: Perttunen, Bruce (BPerttunen@bcbsm.com)
Date: Tue Jan 06 2004 - 10:01:05 EST

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I would like to get some comments on setting up internal disks on a V880 to
achieve the highest availability and fault tolerance.

I have a V880 with a single FC-AL backplane and six disks connected to it.
Disksuite is used to mirror each of the disks. Some concerns have come up
about backplane failure. Would it be better to install a second backplane
and mirror the disks across the controllers? The V880 Owner's Guide
suggests use two FC-AL host adapters and multipathing software for fault
tolerance and high availability -- but if this is done, wouldn't I just have
two paths to one disk, which could still fail?

Comments are appreciated and I will summarize.

Thanks.

Bruce Perttunen
Blue Cross Blue Shield of Michigan
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