That's not really a surprise, is it? In the second case, everything fits
in the file cache. You're overwriting the same sectors over and over, so
you only use 20 MB of file cache, and it doesn't even need to touch the
disk every time.
In the first case, every byte that you write has to be passed through the
cache and sent to disk. You're writing 8 GB, which is larger than the file
The job takes what it takes. If you need to write 8 GB, then it's going to
take 280 seconds.
Tim Roberts, XXXX@XXXXX.COM
Providenza & Boekelheide, Inc.