External USB faster than SATA to SATA

  • Thread starter Thread starter skid00skid00
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skid00skid00

I run MS backup regularly, on an Intel C2D 6600 on an Intel D975XBX2.
I've got 3 new internal WD 7200 rpm Caviar SATA drives, and a 5 yr-old
external LaCie 320 GB drive.

Saving C: to D: (both SATA) takes 4 times longer than saving C: to
LaCie on USB!

The internal drives are running as IDE drives. Transfer mode is "DMA
if available" and Current Transfer Mode is Ultra DMA Mode 5 on the
internal drives.

Does this make sense to anyone?
 
I run MS backup regularly, on an Intel C2D 6600 on an Intel
D975XBX2. I've got 3 new internal WD 7200 rpm Caviar
SATA drives, and a 5 yr-old external LaCie 320 GB drive.
Click to expand...
Saving C: to D: (both SATA) takes 4 times longer than saving C: to LaCie on USB!
Click to expand...

Must be something seriously ****ed there somewhere.
The internal drives are running as IDE drives. Transfer mode is "DMA
if available" and Current Transfer Mode is Ultra DMA Mode 5 on the
internal drives.
Click to expand...
Does this make sense to anyone?
Click to expand...

Nope, something is seriously ****ed there somewhere.

See what HDTach has to say about the relative drive speeds
and see what happens when you time a manual copy of a
couple of very large files to the two different types of drives.
 
I have seen this when a generic sata driver is used when a specific one is
needed. Did you load the drivers from the MB install disk to start out?
or let XP do it and left it at that?
 
The write buffers were turned off...

Now the SATA drives are 4x faster than the USB drive.
Thanks for the responces.
 
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