SATA/SCSI? slow transfer speed and errors?

[tech-wreck]

moving some files (322MB) from SATA 3 SSD to a SATA 2 HDD took aaaaaages, at <200Kb/s (<25% CPU usage, no other running applications) and some of the files were corrupted in the process, so i will try to redownload them to the correct drive this time...
also, intel rapid storage utility reports the drives as SATA devices (6GB/s and 3GB/s respectively) but device manager and system information list them as SCSI disks...is that right?
is this due to an incorrect BIOS setting? and would plugging the mechanical drive into a different header improve throughput? or should i ditch the barracuda and fit a replacement?
thanks in advance
motherboard - gigabyte Z68XP-UD3 (marvell 91xx SATA 6G controller)
SSD - kingston SV300S3
HDD - seagate 250GB 7200

 

[D_Know_WD]

Hi there tech-wreck,

Most probably, the slow transfer speed and file corruption are due to a failing HDD. You can just test it with a brand specific testing tool in order to see whether this is the case. If it is, then you should back up the data stored on it and get another one.
Regarding the SCSI question, I would advise you to change the SATA port and see whether the HDD will appear the same way. I don't really think it is an incorrect BIOS setting. Check this out: http://www.sevenforums.com/hardware-devices/99154-sata-ssd-drive-shows-up-scsi-rediculously-baffled.html

I don't really think that changing the SATA port will improve the transfer speed, but it will not hurt to try. You SSD should be on port 0 while you can try the HDD on several other ports. In case you have spare cables, you can change them as well.

Cheers,
D_Know_WD

 

[tech-wreck]

had a tinker with it last night, starting with the BIOS. the SSD is in port 0, the HDD in port 5. SATA mode is AHCI, but if i enable eXtreme hard drive (XHD), the mode changes to RAID, and I don't think that is what i want.
next, i run the drive checking tools in easeUS partition master (thanks again, SR-71), and found no errors. neither did CHKDSK. filesystem OK, and no bad sectors... maybe the drive is still good...
cheers for the link, apparently the marvell controller is rubbish, but i can try the standard windows SATA drivers which are said to be better, and when I find my spare cables i'll do some juggling and see if that helps.