What about defective SSDs? Should they fail within the first few hours
of operation as mechanical drives 'do'?
http://www.tomshardware.com/reviews/Intel-x25-m-SSD,2012-5.html
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of John Jones
Sent: Tuesday, September 29, 2009 2:31 PM
To: Midrange Systems Technical Discussion
Subject: Re: SSDs and the Reliability Factor
That article really wasn't very informative. For instance, the author
didn't mention that MLC SSDs are good for roughly 10K write cycles
before
any reliability degradation should occur and 100K write cycles for SLC
disks. No mention of wear leveling or the forthcoming TRIM
implementation
which stabilizes performance levels.
Calling SSDs no better than platter-based drives is only correct when
comparing prices & storage density. For those factors, platter drives
are
better. But SSDs draw less power, generate less heat, and the good ones
will run circles around platter-based drives when it comes to IOs/second
and
sustained transfer rate. For reliability, SSDs can last just as long as
their spinning brethren. They are less likely to have random failures
and
are immune from head crashes since there are no heads.
If you have time and want a more technical dive, check out what Anand
has
written. The latest is at
http://www.anandtech.com/storage/showdoc.aspx?i=3631 and it links to the
first article in the first paragraph. Granted, Anand's site is geared
towards the PC enthusiast but the technical details are just as relevant
for
a server implementation (x86 or Power).
On Tue, Sep 29, 2009 at 1:08 PM, Chuck Lewis
<chuck.lewis@xxxxxxxxxxxxxxxxx>wrote:
With the talk of SSD's today this was timely:
http://tinyurl.com/y9j2ztz
Chuck
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