Slow Slow Slow Hdd Transfer Speeds :'(

Hi! About 3 years ago I built my first WHS. Its still in use today, and is made up of 7 HDDs varying in size from 1TB to 2TB to a total of 9.5TB. In my old house I ran cat5e around the house and had some pretty mediocre tranfer speeds (30MBps max but more often 5MBps) but put it down to my cabling skills and a cheap gigabit swtch.

I've since moved house and have meticulously laid CAT6 wire throughout the house and have upgraded to a proper managed switch. Same transfer speeds occur. I replaced the network card on the home server with an Intel pro PCIe one, but that didn't help either.

So after checking all the network side of things I've gone into HDD mode and have run HD Tune on each of my drives. The 2TB drive I have as my boot drive has minimum transfer speeds of 1.5MBps and maximum of 8MBps!!!! I think this is the issue. All the other drives seem to behave fine, just the boot drive that is pants.

I've had a look at the suggestions outlined here (http://winhlp.com/node/10) and checked if any of my drives are running in PIO mode but they all appear to be Ultra DMA 5.

Any suggestions on what to try next because I'm sure its this holding everything back.


Many thanks

Chris