12-03-2012 07:02 AM - edited 12-03-2012 07:33 AM
I have recently purchased a new Seagate Pipeline HD 1TB drive (ST1000VM002 9ZL162-300)
It's a SATA III 6GB/s drive. However, I bought it for a Humax PVR upgrade and it transpires that the Humax will only support SATA I or SATA II drives, not SATA III.
The drive has a 4 pin jumper block on it. Does anyone know if I can jumper two pins to reduce the interface speed to SATA II?
Seagate tell me that is not possible, but I am not sure I am convinced about that answer to be honest. First they told me that my drive was SATA II only, which was clearly wrong. Then they told me that it doesn't have any jumpers on it, which is also wrong.
Also, the manual says "It is not usually necessary to use jumpers" <to set the interface speed>... which surely means it sometimes is?
Also, also, the previous model - which is physically identical and also has the 4 pin jumper block - will drop down from SATA II to SATA I if you place a jumper on two of the pins. It would seem entirely logical and to be expected if my drive behaved the same.
I have tried using a jumper and attaching the drive to my PC, but it's hard to tell what speed has been negotiated. The only software I have that claims to be able to tell, says it's SATA III 6GB/s irrespective of the jumper. But I guess that might just be reading from the drive controller what the spec of the drive is, rather than the negotiated speed.
If anyone can answer this definitively - or indeed help in any way - I would be most grateful.
12-03-2012 04:05 PM
afaik they can't be slowed down with jumpers, the only way they do slow down is if the sata controller slows it down due to a lower spec, i.e 6GB/s running on 3GB/s,
The softwares will say your drive is 6GB/s as that is what it reports itself as, however if your PC is Intel with RST console it might show it there.