Re: [gentoo-user] Re: File synchronisation utility (searching for/about to program it)
On Saturday 25 July 2009 16:56:57 walt wrote: On 07/24/2009 07:43 PM, Alan E. Davis wrote: ...I am using a flash drive as a cache, so to speak... I recently learned that flash drives wear out after about 10,000 write operations, which came as an unpleasant surprise. That's a gross over-simplification of reality. Individual elements of a flash drive will eventually wear out - they are not infinitely over-writable. The ultra-super-duper-cheapie crap ones average out at about 10,000 writes per cell, meaning that's the point where the manufacturer won't guarantee much. You may well get more on such a device in practice. Decent drives go up to 100,000 writes before cell failures become statistically significant Just be aware that you are drastically shortening the life of a flash drive by writing to it frequently. (or so I've read) Which is why you should use wear-levelling -- alan dot mckinnon at gmail dot com
[gentoo-user] Re: File synchronisation utility (searching for/about to program it)
On 07/24/2009 07:43 PM, Alan E. Davis wrote: ...I am using a flash drive as a cache, so to speak... I recently learned that flash drives wear out after about 10,000 write operations, which came as an unpleasant surprise. Just be aware that you are drastically shortening the life of a flash drive by writing to it frequently. (or so I've read)
Re: [gentoo-user] Re: File synchronisation utility (searching for/about to program it)
...I am using a flash drive as a cache, so to speak... I recently learned that flash drives wear out after about 10,000 write operations, which came as an unpleasant surprise. Just be aware that you are drastically shortening the life of a flash drive by writing to it frequently. (or so I've read) I think the problem is the number of erases actually (but you erase in order to write, so)... This is number really is more or less, some companies achieve higher number of writes, i think this figure shows a worst-case scenario. Also, it's actually 10k writes per sector... git, as far as i understand, will append new versions to the repository, so it's writing on other sectors and only once. Only if you remove, prune, cleanup the repository, then it would erase... and if you were to format it every day and write to it once a day, (say one new write per sector, on every sector, once per day)... i've quickly calculated the key will last around 27 years. I'll be glad to buy a petabyte usbkey for 10$US in 27 years man! lol Simon
