On 05/20/2011 01:26 PM, Keith Roberts wrote:
I'm wondering if it would be a good idea to use a new SSD for moving all the disk i/o to, that Linux likes to do so often.
Yes, it's often a really good idea. If you're doing software RAID on Linux, you really should either disable disk drives' write cache or have the system on a UPS with monitoring and automated shutdown. Most people will opt for the latter. Using an SSD can boost write performance and reliability for other systems. I just found this write-up on the topic:
http://insights.oetiker.ch/linux/external-journal-on-ssd.html
Plus putting SWAP onto a decent SSD should speed things up somewhat.
Well, only if you're using swap space. If that's the case, adding RAM to the system will probably be less expensive and a lot more effective.