SSDs instead of SAS.
riak at otoh.org
Mon Jan 9 18:21:43 EST 2012
At 2012-01-09T15:12-0800, Jeremiah Peschka wrote:
> However, make sure you do the reading on the SSDs you're going to
> purchase because not all SSDs are created equal. I had a client buy
> some smaller OCZ-Vertex 3s recently which have a wear leveling issue
> (the 120GB drives have fewer chips than the 240GB drives) that causes
> performance to fall apart pretty quickly.
In general, for production you want to use SLC or eMLC drives (which are
quite a bit more expensive than MLC but also have fewer degredation
Another way you can improve your life significantly I/O wise is to use
an OS with ZFS (such as SmartOS, IllumOS or Solaris) as these can be
configured to use the SSDs as a large cache for reads and write backs to
slower I/O such as SAS or SATA.
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