Jumpers on Seagate Sata drive

megatron

megatron

megatron

Soldato
Joined
8 Nov 2002
Posts
4,412
Location
Kent
Was reading chapter 3.2 here:
http://www.seagate.com/support/disc/manuals/sata/100390001c.pdf

Its a little ambiguous in that if u do not touch the jumper and leave it at 1.5Gb/s (Sata 1 I believe), will "autonegotiation" set it to 3Gb/s regardless? I would have set it immediately to 3Gb/s but it means removing (and probably losing) the jumper altogether. IIRC my previous drives u just moved the jumper from pin 1-2 to pin3-4, but it does not give this option (even though there are 4 pins just like other drives).
 
It's highly unlikely that you'd notice any difference in performance by removing the jumper. The drive is incapable of a sustained transfer rate of more than 80Mb/s which is well within the 150Mb/s offered by SATA1. You'll see an increase in the burst transfer rate up to about 200Mb/s from 140 odds but that has a negligible effect on real world performance.
 
I wanted to ask if there was any place where I could check the current speed within windows xp? I didnt notice anything in the device manager, or should I be looking under administrative tools?
 
Ive posted in the "post your benchmarks" thread but I meant something simple which tells you the transfer rate that the drive is set to. It used to be in the device manager for PATA drives. If there isnt any setting/info, no biggie. This limit might explain why my Maxtor 250Gb 16Mb has a burst rate of 155Mb/s i.e. hit the cap.
 
You could just leave the Seagate jumper on one of the pins i.e. put it at 90 deg to the way it is now and it won't make the slightest bit of difference to the drives operation if you are worried about losing it.
 
megatron said:
I wanted to ask if there was any place where I could check the current speed within windows xp? I didnt notice anything in the device manager, or should I be looking under administrative tools?
Click to expand...
The speed is quite often reported in Device Management on the properties page for the SATA controller that the drive is connected to.
 
Ive hung the jumper off 1 pin as suggested. I tried to check the speeds of the hard drives, in the device manager under IDE ATA/ATAPI controllers but couldnt really match anything up. Ive got 1 device at UDMA 5 (probably my WD120jb), and 2 at UDMA 6, and 1 at UDMA 2 which I presume is my DVD writer.

I was searching through the troubleshooter for a reason I couldnt see my drive, when the 2nd time of entering the "disk management" part of "administrative tools> computer management"; I didnt cancel the prompt to initialize a disk.

I cant remember using this before but its initialized my disk and set 1 maximum size partition and its formatting my drive. However if I wasnt familiar with the administrative tools Id be stumped. IIRC all I had to do last time was click the disk in explorer's view and format it.

Its a bit tight now in the lower compartment of my P180 with 4 hard drives and wires about 2 inches away from a fan they mustn't foul. A good thing is that the p180 seems to keep my drives at the very minimum of temperature samples as in speedfan's database.
 
Last edited:
rpstewart said:
It's highly unlikely that you'd notice any difference in performance by removing the jumper. The drive is incapable of a sustained transfer rate of more than 80Mb/s which is well within the 150Mb/s offered by SATA1. You'll see an increase in the burst transfer rate up to about 200Mb/s from 140 odds but that has a negligible effect on real world performance.
Click to expand...
He's right but if if your mobo supports SATA-II, you really might as well remove the jumper.
 
wow - funny how little tidbits like this pass you by - been running these seagates using sata/raid for ages without knowing about that jumper, did wonder why they would only ever run in generation 1 speed...

intel matrix app now says generation 2 :) and my burst speed has doubled! although average speed is pretty much unchanged... maybe an extra 10MB/s.
 
Last edited:
semi-pro waster said:
You could just leave the Seagate jumper on one of the pins i.e. put it at 90 deg to the way it is now and it won't make the slightest bit of difference to the drives operation if you are worried about losing it.
Click to expand...
That's what I did, there is a gap in the surrounding plastic to allow the jumper to be set vertically so you get SATA2 and don't have to worry about losing the tiny jumper.
 
You must log in or register to reply here.
Back
Top Bottom