On Tue, 8 Mar 2011, Peter Gutmann wrote: > They already do this for pretty much every cellphone type under the > sun, so as soon as the demand emerges they'll do SSDs as well. In > addition the magic in wear-levelling is where to move things to, > when, and how, not in any magic re-encoding of block data. So the > contents of the data blocks stay the same, they're just in different > locations. This means that, once you exclude metadata used by the > FTL, what you'll see is the equivalent of a highly-fragmented > standard disk drive. I'm not saying it'll be trivial, but it > shouldn't be that hard either.
The flash controller (in addition to the address translation) may also be supposed to do the error correction: detecting that a block is worn out may be based on how many errors are corrected. Thus it is plausible that the data may be also re-encoded. -- Regards, ASK _______________________________________________ cryptography mailing list [email protected] http://lists.randombit.net/mailman/listinfo/cryptography
