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Re: Intel's X25-M SSD

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Greg Smith <gsmith(at)gregsmith(dot)com>
Cc: Merlin Moncure <mmoncure(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Intel's X25-M SSD
Date: 2008-09-24 03:24:57
Message-ID: 200809240324.m8O3Ovn06515@momjian.us (view raw or flat)
Thread:
Lists: pgsql-performance
Greg Smith wrote:
> On Mon, 8 Sep 2008, Merlin Moncure wrote:
> 
> > What's interesting about the X25 is that they managed to pull the
> > numbers they got out of a MLC flash product.  They managed this with a
> > DRAM buffer and the custom controller.
> 
> I finally found a good analysis of what's wrong with most of the cheap MLC 
> drives:
> 
> http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3403&p=7
> 
> 240ms random write latency...wow, no wonder I keep hearing so many reports 
> of cheap SSD just performing miserably.  JMicron is one of those companies 
> I really avoid, never seen a design from them that wasn't cheap junk. 
> Shame their awful part is in so many of the MLC flash products.

I am surprised it too so long to identify the problem.

-- 
  Bruce Momjian  <bruce(at)momjian(dot)us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +

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