On 2/2/2012 2:15 PM, Peter A wrote: > On 02/02/12 14:05, Mike wrote: >> On Thu, 2 Feb 2012, William Warren wrote: >> >>> On 2/2/2012 1:19 PM, Matt 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? >>>> >>> it all depends on how much writing you do AND how much spare space the >>> drives have. The more spare flash the drives have the longer they'll >>> live due to being able to spread the writing wear over a larger area. >>> >> How very timely, I'm just starting to investigate something similar >> myself. I don't have much to contribute however this forum post: >> http://www.xtremesystems.org/forums/showthread.php?271063-SSD-Write-Endurance-25nm-Vs-34nm >> seems as though it'll be interesting, if I can ever make it through 3500+ >> pages to get to the conclusion. >> > If you're worried about io reliability, then buy a (way more expensive) > SLC drive, rather than the consumer level MLC... We have some SLC drives > here that from their manufacturer have been rated at 3 or more years of > 100% write 24x7... > > Peter. > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos exactly hence why i said stay with OCZ or Intel..MLC drives are the best. But also the smaller the process node the shorter the lifespan of the flash. MLC drives will also over provision more spare flash area most times.