[CentOS] SSD for Centos SWAP /tmp & /var/ partition
Rudi at SoftDux.com
Mon May 23 18:58:54 UTC 2011
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.
> 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?
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