Re: CACHE BATT EXP 90 DAYS???

We are seeing large systems go to Mirroring more and more but even some small systems. The problem of course is that as you increase the number of loops, buses, cards, power supplies and drives you statistically increase the chances of a failure. It's also normally true that the larger the system the more people there are that depend on it and therefore the cost for it to be down is higher. So it becomes more and more important to mirror (correctly I might add!) than to RAID your disks as the systems get larger. You don't reduce the chance of a failure but you reduce the chances that a failure will hurt. Poorly done mirroring only costs you more hardware and affords little additional protection.

- Larry

ChadB@xxxxxxxxxxxxxxxxxxxx wrote:

Maybe with some serious mirroring design way up the bus level... is that
common on big systems?



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Why wouldn't it?

Rob Berendt
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