Re: Need help with 8.4 Performance Testing

On Tue, 2008-12-09 at 15:07 -0500, Merlin Moncure wrote:
> On Tue, Dec 9, 2008 at 1:11 PM, Joshua D. Drake <jd(at)commandprompt(dot)com> wrote:
> > Hard drives work, their cheap and fast. I can get 25 spindles, 15k in a
> > 3U with controller and battery backed cache for <$10k.
>
> While I agree with your general sentiments about early adoption, etc
> (the intel ssd products are the first flash drives that appear to have
> real promise in the enterprise), the numbers tell a different story.

Oh I have read about them and I am excited. I am just saying that there
are plenty of people who can take advantage of the unknown without the
worry of the pain that can cause. My client, can't.

>
> The main issue that I see with flash SSD is if the promised wear
> lifetimes are believable in high load environments and the mechanism
> of failure (slowly degrade into read only) is accurate.
>

Right.

> So, at least in relative terms, 15k sas drives are not 'fast'. They
> are terribly, awfully, painfully slow. They are also not cheap in
> terms of $/IOPS. The end is near.
>

No doubt about it. I give it 24 months tops.

Joshua D. Drake

> merlin
>
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