On Mon, Aug 2, 2010 at 4:55 PM, Neal Campbell <[email protected]> wrote:
> Purely anecdotal but from what I read, if you continuously wrote on the > disk > drive, a MLC-controller SSD would last more than 5 years and a SLC > controller SSD would last more than 30 years. > > This is only true when the write drivers for the device go through a *lot* of hoops (I had to do this ~10 years ago at a past job). For example, i-nodes on the drive for any given file will be far from anything close to sequential, slowing down reads and caching. Also, often times to improve the lifetime of a cell, bytes will be written in reverse or using other encodings; this is a common for text files where one encoding will use the upper bits and another the lower bits. But, again, this takes processing time. If you aren't willing to go through these hoops in your driver - or you disable these "features" of your SSD, you can be quite sure you'll kill it in well under 5 years. Note: even with these features, the past company I worked for would burn through 4 GB flash drives (remember, this was 10 years ago) in < 1 month, given the work we were doing with them. I'm sure things have improved considerably since then, though. Food for thought. Jeff M. _______________________________________________ use-revolution mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
