fc5 : raid array does not appear as one drive?

[Bazooka Joe]

True - I thought about disclaiming software raid works great depending
on your situation. But since he was already considering MB raid I
figured he wasn't build an enterprise DB server.



On 8/28/06, Bruno Wolff III <bruno at wolff.to> wrote:
> On Mon, Aug 28, 2006 at 11:43:20 -0600,
>   Robin Laing <Robin.Laing at drdc-rddc.gc.ca> wrote:
> >
> > What is the benefit of battery backed cache when on a UPS?  I have never
> > understood the reasoning behind this.
>
> Because power can fail in a lot of ways, some of which are after the UPS.
>
> > I am debating getting a full RAID card or using software RAID for a new
> > storage box.
>
> The battery backed cache is nice for databases because when they commit
> they need to wait for the data to be on permanent storage. Trusting the
> battery backed cache can relieve a big bottleneck.
>
> For other purposes this isn't as big of a deal.
>
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