Message-ID: <519D73CC.2050308@2ndQuadrant.com>
Date: Wed, 22 May 2013 21:41:32 -0400
From: Greg Smith <greg@2ndQuadrant.com>
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7;
	rv:14.0) Gecko/20120713 Thunderbird/14.0
MIME-Version: 1.0
To: "Joshua D. Drake" <jd@commandprompt.com>
CC: Merlin Moncure <mmoncure@gmail.com>, sthomas@optionshouse.com,
	Tomas Vondra <tv@fuzzy.cz>, pgsql-performance@postgresql.org
Subject: Re: Reliability with RAID 10 SSD and Streaming Replication
References: 
 <CAAE-9WHMycEZOB5J6HKME5AZLEdL2hYF+FV8hzbLksJinq=EJg@mail.gmail.com>
	<51957499.6050905@fuzzy.cz> <519991EB.8010208@2ndQuadrant.com>
	<519A8E29.60702@fuzzy.cz>
	<CAHyXU0wvW-USgbkXAYEHLG2fHgj=UdZi1aCFoVWBMQEsOFZy+A@mail.gmail.com>
	<519C0EFD.9080002@2ndQuadrant.com>
	<CAHyXU0ymFT7Sqw77yPryGWKEpjV4Wv9Vkc21vGtPKo0GZWGg8A@mail.gmail.com>
	<519CF8CC.1030204@optionshouse.com>
	<519D0921.9080807@2ndQuadrant.com>
	<519D174A.4050703@commandprompt.com>
	<519D1CD6.2080607@2ndQuadrant.com>
	<CAHyXU0wUHDiGVWgejxsFNApiP0sUcf8eLOy1Dwy-1pboBuxLeQ@mail.gmail.com>
	<519D2562.2060604@2ndQuadrant.com>
	<CAHyXU0zvTu9tkROKBHbUFqSH1oxgqVGWsKBX4wjem4X-XXCGzw@mail.gmail.com>
	<519D49DC.7060406@commandprompt.com>
In-Reply-To: <519D49DC.7060406@commandprompt.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk
Sender: pgsql-performance-owner@postgresql.org

On 5/22/13 6:42 PM, Joshua D. Drake wrote:
> I am curious how the 710 or S3700 stacks up against the new M500 from
> Crucial? I know Intel is kind of the goto for these things but the m500
> is power off protected and rated at: Endurance: 72TB total bytes written
> (TBW), equal to 40GB per day for 5 years .

The M500 is fine on paper, I had that one on my list of things to 
evaluate when I can.  The general reliability of Crucial's consumer SSD 
has looked good recently.  I'm not going to recommend that one until I 
actually see one work as expected though.  I'm waiting for one to pass 
by or I reach a new toy purchasing spree.

What makes me step very carefully here is watching what Intel went 
through when they released their first supercap drive, the 320 series. 
If you look at the nastiest of the firmware bugs they had, like the 
infamous "8MB bug", a lot of them were related to the new clean shutdown 
feature.  It's the type of firmware that takes some exposure to the real 
world to flush out the bugs.  The last of the enthusiast SSD players who 
tried to take this job on was OCZ with the Vertex 3 Pro, and they never 
got that model quite right before abandoning it altogether.

-- 
Greg Smith   2ndQuadrant US    greg@2ndQuadrant.com   Baltimore, MD
PostgreSQL Training, Services, and 24x7 Support www.2ndQuadrant.com


-- 
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance