For USB Flash drives, Toshiba calculated that a 10,000 write cycle endurance would enable customers to �completely write and erase the entire contents once per day for 27 years, well beyond the life of the hardware.�You can see that Toshiba simply calculated (10,000 erase cycles / 365 days = 27 years ) which implies re-writing 1GB/day to a 1GB drive. Days until drive becomes 'unwritable' = (datasheet write cycles) x (file system overhead) x Moral: don't go crazy writing traffic logs onto a flash drive! Butch, could you kindly check what kind of 'wear leveling' algorithm is supported in new versions of Mikrotik RouterOS?Īlso what is their 'file system overhead ' it will be a fraction like 0.7 for a DOS/FAT system. The implementation varies between OS/filesystems and users write different amount of data per day. IIRC, the expectation is around 100k write cycles.I wanted to clarify that exact same model '100K write cycle' flash device can become totally unwritable after just a few days if OS does not implement 'wear leveling' algorithm. MTBF is, therefore, going to be approximately the same for all 3 types.
Said by: on the routerboards, they use a NAND type memory, as do modern USB and CF cards.
