Re: Reliability with RAID 10 SSD and Streaming Replication

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От Merlin Moncure
Тема Re: Reliability with RAID 10 SSD and Streaming Replication
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Msg-id CAHyXU0zvTu9tkROKBHbUFqSH1oxgqVGWsKBX4wjem4X-XXCGzw@mail.gmail.com
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Ответ на Re: Reliability with RAID 10 SSD and Streaming Replication  (Greg Smith <greg@2ndQuadrant.com>)
Ответы Re: Reliability with RAID 10 SSD and Streaming Replication  ("Joshua D. Drake" <jd@commandprompt.com>)
Re: Reliability with RAID 10 SSD and Streaming Replication  (Greg Smith <greg@2ndQuadrant.com>)
Список pgsql-performance
On Wed, May 22, 2013 at 3:06 PM, Greg Smith <greg@2ndquadrant.com> wrote:
> You bet, and I haven't recommended anyone buy a 710 since the announcement.
> However, "hit the street" is still an issue.  No one has been able to keep
> DC S3700 drives in stock very well yet.  It took me three tries through
> Newegg before my S3700 drive actually shipped.

Well, let's look a the facts:
*) >2x write endurance vs 710 (500x 320)
*) 2-10x performance depending on workload specifics
*) much better worst case/average latency
*) half the cost of the 710!?

After obsoleting hard drives with the introduction of the 320/710,
intel managed to obsolete their *own* entire lineup with the s3700
(with the exception of the pcie devices and the ultra low cost
notebook 1$/gb segment).  I'm amazed these drives were sold at that
price point: they could have been sold at 3-4x the current price and
still have a willing market (note, please don't do this).  Presumably
most of the inventory is being bought up by small channel resellers
for a quick profit.

Even by the fast moving standards of the SSD world this product is an
absolute game changer and has ushered in the new era of fast storage
with a loud 'gong'. Oh, the major vendors will still keep their
rip-off going on a little longer selling their storage trays, raid
controllers, entry/mid level SANS, SAS HBAs etc at huge markup to
customers who don't need them (some will still need them, but the bar
suddenly just got spectacularly raised before you have to look into
enterprise gear).  CRT was overtaken by LCD monitor in mind 2004 in
terms of sales: I'd say it's late 2002/early 2003, at least for new
deployments.

merlin


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