independently of usage/wear-out rather age of a drive, i.e. the time spent in the field, affects reliability. Higher-end SLC drives not more reliable than MLC drives. Flash lower replacement rate but more uncorrectable errors than HDD.
M. Gao, W. Xie, C. Lu, и R. Shen. The 3rd International Conference on Internet Multimedia Computing and Service (ICIMCS2011), Chengdu, China, ACM, (августа 2011)