SLC and MLC endurance aren't much different: http://hothardware.com/news/google-data-center-ssd-research-report-offers-surprising-results-slc-not-more-reliable-

SLC and MLC endurance aren't much different: http://hothardware.com/news/google-data-center-ssd-research-report-offers-surprising-results-slc-not-more-reliable-than-mlc-flash http://hothardware.com/news/google-data-center-ssd-research-... To reach a full rewrite a day, that's like 200Mb/s consistently over the span of a 24 hour day. If your loads/usage looks like this, you're probably expecting your drives to fail and are ready to replace them.