[CentOS] SSD Drives

Tue Feb 7 12:05:16 UTC 2012
Michael Simpson <mikie.simpson at gmail.com>

On 2 February 2012 18:19, Matt <matt.mailinglists at gmail.com> wrote:
> Has anyone installed a high I/O application such as an email server on
> SSD drives?  Was thinking about doing two SSD's in RAID1.  It would
> solve my I/O latency issues but I have heard that SSD's wear out
> quickly in high I/O situations?  Something like each memory location
> only has X many writes before its done.  Just wandering if anyone has
> tested it and if newer SSD's are better about this?

Sun were recommending using SSDs for the ZIL in really big ZFS install
*years ago* so go for it.

As long as you are using TRIM then you avoid the slowdown that happens
once the ssd is full

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/newmds-ssdtuning.html

mike