[CentOS] CentOS Digest, Vol 60, Issue 13

Emanuel Machado emachado at cytonomest.com
Wed Jan 13 18:30:01 UTC 2010

Another issue to consider with SSDs is that they are based on Flash technology. Each flash cell can only be written on about 10,000 to 100,000 times or so (*), so if you're using extensive read/write on your server you will be impacted. SSD manufacturers go around this issue by giving some intelligence to the drive controllers, so that they minimize the per-cell usage (which means moving things around a bit internally, transparently to you), so in many cases you will not see any impact. However, I would be careful on what I run on it, and what services are enabled, maybe having another disk around for write intensive apps.


(*) http://en.wikipedia.org/wiki/Solid-state_drive#Disadvantages

Emanuel Machado, PhD.
Senior Engineer, Project Leader


Cytonome/ST, LLC.
27 Drydock Ave
Boston, MA 02210
Voice:  (617) 330-5030 ext. 237
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Website: www.cytonomest.com
Email: emachado at cytonomest.com 
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Sent: Wednesday, January 13, 2010 12:00 PM
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Subject: CentOS Digest, Vol 60, Issue 13

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