11-30-2011 09:21 PM
I've just built-up a system with an Intel DZ68BC motherboard. My drives are a Crucial M4 SSD and a Barracuda ST3000DM001 3TB HDD, both of which claim to have a SATA 3 (6 Gb/s) interface. The SSD and HDD are each connected to one of the Z68's two SATA 3 ports. Yet the motherboard BIOS screen for "Chipset SATA Controller Configuration" shows "M4-CT256M4SSD2 (256.0GB-6Gb/s)" for SATA Port 0 vs. "ST3000DM001-9Y (3000.5GB-3.0Gb/s)" for SATA Port 1. It's my understanding that communication speeds are auto negotiated between the chipset and the HDD, so there are no jumpers on the HDD to set the speed. How can I force the chipset and HDD to run at 6 Gb/s instead of 3Gb/s?
12-01-2011 07:18 PM - edited 12-01-2011 07:20 PM
OK, per your suggestion here's what the Intel RST "Manage Disk" page says for this drive:
Port location: Internal
Type: Hard Disk
Size: 2,861,588 MB
Serial number: ...
System disk: No
Password protected: No
Disk data cache: Enabled
Native command queuing: Yes
Sata transfer rate: 3 Gb/s
Physical sector size: 4096 Bytes
Logical sector size: 512 Bytes
So it definitely indicates 3 Gb/s, but isn't this drive supposed to be 6 Gb/s?
12-03-2011 05:13 AM - edited 12-03-2011 05:27 AM
I can't offer you a solution to this as 6GB/s MB's haven't arrived at Cantmansion's yet but I can give you some reading that may help you find some more assistance.
Like I said I can't play physically yet, but you aren't the first user to mention this, I also have a feeling this is mostly happening on Gigabyte boards, which are always my first choice tbh.
It would be interesting to see if any AMD user's are having issues, if they aren't it would suggest certain Bios' are to blame, or possibly the drive FW is reporting wrong.
A user I found uses this http://www.asus.com/Motherboards/Intel_Socket_1156
Last read that I had time to do suggests the quality of the sata cable may be at fault, it's in link #2 btw, hth.
12-03-2011 11:41 AM
My MB is ASUS P8H-67-M, B3, most recent BIOS (and most recent intel Chipset drivers\Rapid storage from intel.com).
There's nothing wrong with the mobo since the same SATA connectors (two grey ones for SATA 6Gb/s) which recognize the Seagate as only 3Gb/s, do recognize my 6Gb/s SSD very well as 6Gb/s (both of them, I checked).
Obviously, there's something wrong with the old series of firmware CC93. I can't put my finger whether it's the firmware or the drive itself (mine was made on April 2011), but defenately Seagate needs to recall these drives.
I returned mine and hope it'll go smoothly.
I'd have downloaded firmware CC96 if it was available on the net, sadly it's not.
12-03-2011 01:49 PM
12-04-2011 07:33 AM
To cantbecanit: Thanks for the links. I doubt, though, that this is a cable problem: I'm using one of the special SATA 3 cables that came with my motherboard, and my SSD successfully connects at 6 Gb/s using the same cable.
To musician88: My 3TB drive is running firmware CC96 and exhibits the 3GB/s limitation, so even if it were available for download, I doubt that this firmware would have helped you.
As for me, I intend to keep my drive. Fast as it is, benchmark testing shows that this drive tops out at a 200MB/s transfer rate, which is barely over the SATA 1 limit. The only benefit of the SATA 3 interface touted by Seagate is in "burst mode", which I think I can live without for now. Seagate should of course be held to their specs if this is a firmware/drive problem. So I plan to wait for more definitive info and hope for a firmware update or drive recall if necessary.