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Re: run debian off usb flash drive

Marc Singer <elf@buici.com> writes:

> On Sun, Mar 07, 2004 at 03:25:08PM +1100, Russell Coker wrote:
> > On Sun, 7 Mar 2004 13:30, Marc Singer <elf@buici.com> wrote:
> > > Most of the flash parts are rated for 100K erase cycles per 128KiB
> > > block (StrataFlash).  Cheap hard drives are usualy waranteed for only
> > > one year.  Assuming the best case for flash, and worst case for a hard
> > > drive, the flash device can take about 250 block erase cycles/day in a
> > > year of continuous use.  The wear-leveling flash filesystems will
> > 
> > 250 erases per day on a single is not a likely amount of load for a laptop 
> > provided that there is plenty of spare space.
> > 
> Single...what?  I suppose I wasn't clear in that this is 250 block
> erases for a given block.  If the erase block is 128 KiB and you have
> only one free block (heaven forbid) that would require writing 32 MiB
> of data every day for a year before that block was unable to accept
> another write.

Writeing one single byte of that block is enough. Thats 250 bytes.

> Even if there is no wear-leveling, this could be OK as long as you
> didn't plan to keep the flash device more than a year.


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