It seems to me that there's some confusion on your part about what a SATA power connector is...
The SATA edge connector is divided in two parts, a larger one and a narrower one. The narrower one is the signal, or data, connector. The larger one is the power connector.
Some older drives also had an additional common Molex connector for power, for compatibility reasons, since at first only a few power supplies had the SATA power connector. Note that the Molex connector does not enable the hot-plugging and unplugging of SATA drives. This needs the 3.3V supply that only the SATA connector provides. As far as I can see, the ST3250318AS does not have such a connector.
The manual for the ST3250318AS is here:
http://www.seagate.com/staticfiles/support/disc/manuals/desktop/Barracuda%20...
On page 28 you can read about the SATA cables and connectors. The pins you refer to, which are not present on the WD at the same position, are NOT power connections, that is a jumper block as you can read on the first image of page 28. The manual states the following:
« It is usually not necessary to set any jumpers on the drive for proper operation; however, if you connect the drive and receive a “drive not detected” error, your SATAequipped motherboard or host adapter may use a chipset that does not support SATA speed autonegotiation. If you have a motherboard or host adapter that does not support autonegotiation: -Install a jumper as shown in Figure 1 below to limit the data transfer rate to 1.5 Gbits per second (and leave the drive connected to the SATA-equipped motherboard or host adapter that doesn’t support autonegotiation) or -Install a SATA host adapter that supports autonegotiation, leave the drive jumper block set to “Normal operation” (see Figure 1 below), and connect the drive to that adapter. This option has the benefit of not limiting the drive to a 1.5 Gbits/sec transfer rate. »
I think this is not a power connector issue.
The WD is a SATA3 drive (6gb/s). Are you sure that your motherboard supports SATA3 drives? Maybe SOME ports support them while others do not? If not, can you force the WD to operate in a lower mode? Some drives can, either by hardware or software.
Miguel Medalha wrote:
The WD is a SATA3 drive (6gb/s). Are you sure that your motherboard supports SATA3 drives? Maybe SOME ports support them while others do not? If not, can you force the WD to operate in a lower mode? Some drives can, either by hardware or software.
Thank you very much for your lucid explanation, which has clarified the issue greatly in my mind. I was indeed completely ignorant of the basic facts about SATA drives, since in my (limited) experience they simply worked when installed.
The two HP MicroServers I have are both N36L models, 3 years old. I had better check if these do support SATA3 drives.
On 08 February 2014 @13:28 zulu, Timothy Murphy wrote:
Miguel Medalha wrote:
The WD is a SATA3 drive (6gb/s). Are you sure that your motherboard supports SATA3 drives? Maybe SOME ports support them while others do not? If not, can you force the WD to operate in a lower mode? Some drives can, either by hardware or software.
Thank you very much for your lucid explanation, which has clarified the issue greatly in my mind. I was indeed completely ignorant of the basic facts about SATA drives, since in my (limited) experience they simply worked when installed.
The two HP MicroServers I have are both N36L models, 3 years old. I had better check if these do support SATA3 drives.
Usually with WD SATA II and III drives, if you jumper pins 5 and 6 it forces them to the previous SATA mode for controllers that are not compatible.
On SATA II (3 Gb/s) drives they called it OPT1; on SATA III (6 Gb/s) drives they call it PHY mode. See the bottom of the page at http://wdc.custhelp.com/app/answers/detail/search/1/a_id/1679#jumper
Note those drawings show molex connectors which, as far as I'm aware of, they have never installed on SATA III drives, but that does indicate you start counting from the 'empty' space where molex connectors were mounted on EIDE, and on many SATA I (1.5 Gb/s) drives so people didn't have to buy adapters for their power supplies.
On 2/8/2014 6:13 AM, Kai Schaetzl wrote:
Timothy Murphy wrote on Sat, 08 Feb 2014 13:28:18 +0000:
I had better check if these do support SATA3 drives.
That jumper bay usually allows for setting to slower speeds. There should have been a small leaflet with the drive explaining it.
Seagate ST30000DM003 SATA 3 drives are working flawlessly in my Microserver N40L
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Darr247 -
John R Pierce -
Kai Schaetzl -
Miguel Medalha -
Timothy Murphy