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3.3v sata question

post #1 of 7
Thread Starter 
Alright, I've read everywhere that the 5th orange wire isn't required on most drives, and a molex adapter is all that's needed.

Well, Ive uncovered an unique situation. I scored a pair of 500gb satas from dvr boxes. They worked. I moved them to my test box, which has native 5wire sata supplies. Worked. Mdadm, raid0, some bonnie++ and dd tests. Moved them to my torrent box. Nothing. Don't even power up. What's really confusing, is the dish dvr boxes had a 4 wire supply, missing the 5th orange wire, and they worked fine.


So I moved them back to the test box with native power, worked ok. Back to the seed box, with molex adapters, nothing.

So I'm going whip out the soldering iron and tie in from a 3.3 wire on the 20pin atx connector from the motherboard.

I don't know what else to do. It's odd it worked with 4 wires on dvr, but not on a molex adapter, and works fine on a native 5 wire. What triple stumps me is how the one drive has a legacy 4 wire connector, and even that doesn't power it up. Yet on the label, assuming if it's correct (i didn't even think to hdparm and grab software #s), it says it uses 5 and 12v. So *** right?

The dvr supply is a cheap end to end, there's no fancy circuitry to make 3.3 from a 5 or 12 supply.

I'm stumped. Tomorrow when I get home I'll grab some model numbers and maybe find something out.

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post #2 of 7
Use the power adapter on your hard drive in your desktop computer. If they still work, something is wrong with your torrent box. If they don't work, then you probably need to hack in that 3.3v but I would think the hard drive should work fine without 3.3v

I have not heard of mechanical hard drive actually using 3.3v. When SATA was created they wanted low power solution and added 3.3v with 5v and 12v but many early adaptors didn't have SATA power connector yet with the PSU so they relied on the adapter. Early hard drive were intentionally designed not to need 3.3v so they can be compatible with older power supply with the power adapter.

I have no idea if the hard drive manufacturers eventually moved mechanical drive to depend on 3.3v or not. Can't you check the spec of your hard drive, does it list power requirement at all? Many would have something like watts and (milli)amps on 12v and 5v. If it doesn't list 3.3v

SSD and mSATA SSD are dfferent and may actually prefer to have 3,3v but I haven't looked into this so I don't know either.
    
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CPUMotherboardGraphicsRAM
i7 2700k Asus P8P67 Deluxe GTX 580 DCII Corsair Vengeance 
Hard DriveHard DriveHard DriveHard Drive
Corsair Force GT Intel X25V Hitachi HDS722020ALA330 Seagate ST30001DM001 
Hard DriveHard DriveHard DriveOptical Drive
Seagate ST31000528AS Seagate ST30001DM001 Intel X25V Pioneer BDR-209DBK 
CoolingOSMonitorMonitor
Thermalright Venomous X Windows 7 premium 64 bits Soyo Topaz S MT-GW-PRLM24D6 Acer E21H 
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post #3 of 7
Virtually all SATA SSDs run off 5v.

I have not seen any HDD use 3.3v so it is unlikely this is the issue. HDDs are leaning to 5v as well but some 3.5" one still use 12v as well. Like wilykat said, the HDD's label should list power requirements.
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post #4 of 7
precisely what drives are they?
post #5 of 7
Thread Starter 
root@pig:/mnt/holy****# hdparm -I /dev/sd[ba] | grep -e "Number" -e "Revision" -e "size"
Model Number: WDC WD5000AAJS-57TKA0
Serial Number: white space!!
Firmware Revision: 12.01C02
Logical/Physical Sector size: 512 bytes
device size with M = 1024*1024: 476940 MBytes
device size with M = 1000*1000: 500107 MBytes (500 GB)
cache/buffer size = 8192 KBytes
Model Number: Hitachi HCS725050VLA380
Serial Number: white space!!
Firmware Revision: V56OA7HA
Logical/Physical Sector size: 512 bytes
device size with M = 1024*1024: 476940 MBytes
device size with M = 1000*1000: 500107 MBytes (500 GB)
cache/buffer size = 7372 KBytes (type=DualPortCache)


well. long story. i pulled the splitter from a dell box with factory orange, split a molex, made my own 3.3 jumper, heat shrink, blah blah, beautiful.

hooked it all up. power button....nothing!!!! bios of card still shows two drives with a size of 0Gbyte. ***!?

angerly swigged my beer, let grub load, kernel, etc etc and, just for giggles, typed a dmesg,

bam, pair of 500's...***?

reboot, this time bios shows sizes accurately. kill power, turn it on, bios shows zero, but once kernel probes the firmware, they register with kernel load, and on next boot, until power is disconnected from motherboard. *****es worked fine the whole time, i was just impatient and assumed a bios of zero meant the card didn't like them. and after several tries, it's confirmed, they will not physically spin until the kernel starts poking at them.

ridiclious. at least i made an awesome 5 wire sata converter.

.....bull****......


i apologize for the pointless thread.
post #6 of 7
WDC WD5000AAJS-57TKA0

0.68A@5v
0.55A@12v
No 3.3v.

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post #7 of 7
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post

WDC WD5000AAJS-57TKA0

0.68A@5v
0.55A@12v
No 3.3v.


And the Hitachi?

Both are 5 and 12. Read previous post as to of what the reason was.
Firmware.

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