| From: | Vivek Khera <vivek(at)khera(dot)org> |
|---|---|
| To: | Pgsql performance <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Hardware vs Software RAID |
| Date: | 2008-06-26 13:43:03 |
| Message-ID: | 97454AF8-315A-4B3D-8F95-D96B190C6909@khera.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
On Jun 25, 2008, at 11:35 AM, Matthew Wakeling wrote:
> On Wed, 25 Jun 2008, Greg Smith wrote:
>> A firewire-attached log device is an extremely bad idea.
>
> Anyone have experience with IDE, SATA, or SAS-connected flash
> devices like the Samsung MCBQE32G5MPP-0VA? I mean, it seems lovely -
> 32GB, at a transfer rate of 100MB/s, and doesn't degrade much in
> performance when writing small random blocks. But what's it actually
> like, and is it reliable?
None of these manufacturers rates these drives for massive amounts of
writes. They're sold as suitable for laptop/desktop use, which
normally is not a heavy wear and tear operation like a DB. Once they
claim suitability for this purpose, be sure that I and a lot of others
will dive into it to see how well it really works. Until then, it
will just be an expensive brick-making experiment, I'm sure.
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