Getting big flash onto motherboards. Will CF work? what will
chris at netservers.co.uk
Fri May 24 07:25:26 EDT 2002
> chris at netservers.co.uk said:
> > I would guess that these are IDE-compatible then? So I guess I would
> > have to use the mtdblock driver to drive it?
> No. The mtdblock driver is a vary simplistic 'translation layer' that
> doesn't actually do any wear levelling or translation, just lets you use a
> real flash device as if it were a block device.
Sorry, I meant mtdblkdev. Silly me =)
> that it must have different reliability characteristics. But there's no real
> reason for _everyone_ who makes CF to have implemented it so unreliably in
> the first place -- so maybe M-Systems have managed to do it properly -- they
> generally do seem to have sufficient clue. You'd have to test it.
Thanks for your answer, even though it's not encouraging news. I guess we
will have to thrash some CFs to death to find out what's going wrong =(
It's a shame because they are so expensive.
> The DiskOnChip is a different matter. That allows the system to deal with
> real flash, so if there are problems you can fix them. Although in
> practice, nobody _does_ seem to be dealing with the problems which
> occasionally crop up with the DiskOnChip drivers. I still keep trying to
> get our salespeople to find a customer who wants to pay for me to spend
> some real time on them, but it hasn't happened yet :)
We'll consider it if I can persuade my boss that we shouldn't be using CF
Incidentally, do you or anyone know why there is such a big price
different between CF, DoM and DoC for the same capacity?
___ __ _
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