increasing dd disk to disk transfer rate

[Bakul Shah]

> I think after the dd is done, fsck should be run against the affected 
> filesystems, which should take care of most of the issues.

For metadata yes, but not for normal file data.  He wouldn't even know
what got trashed.

> The OP's question was how to make dd faster, not really how to get the 
> data across safely. :)

Sometime you have to answer the question they should've asked!
That is what a diagnostician has to do.  Fix the cause.  Not
the symptom.