On Mon, May 23, 2011 at 8:44 PM, Jerry Franz <jfranz at freerun.com> wrote: > On 05/23/2011 11:01 AM, Rudi Ahlers wrote: >> Now, the question is, is is there any way to tell EXT3/4 to use a >> separate drive as a cache drive for the same purpose? OR, how about >> telling CentOS to use a separate drive for caching purposes in the >> same way? > > You can use an external journal on a SSD to speed up at least writes by > quite a lot. > > http://insights.oetiker.ch/linux/external-journal-on-ssd/ > > But, for paranoia's sake, I would RAID1 the SSD with a second SSD. > > -- > Benjamin Franz > _______________________________________________ Interesting, and it seems like it's similar to the ZFS cache drive scenario but will probably work better for what the OP had in mind, than putting the swap & logs onto the SSD drive. I don't know if running SSD's in RAID1 will be that much more reliable. Surely if the exact same data is read & written (aka same amount of reads & writes take place) on both drive, then both will fail at the same time? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532