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The Pesky PWDIS Feature In Newer SATA Specs
Jesus what a bunch of morons!
http://www.tomshardware.com/news/hdd...ure,36146.html Now in a few years when you need to buy a new hard drive, you will have to buy a new power-supply to go along with it. Regards, -- ! _\|/_ Sylvain / ! (o o) Memberavid-Suzuki-Fdn/EFF/Red+Cross/SPCA/Planetary-Society oO-( )-Oo No purchase required, details inside package. |
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The Pesky PWDIS Feature In Newer SATA Specs
On Thu, 21 Dec 2017 02:47:36 -0500, B00ze wrote:
Now in a few years when you need to buy a new hard drive, you will have to buy a new power-supply to go along with it. Or, to make a deliberate point to avoid it, there's some standards. And then again there are others, as useful as PCI-E slot. |
#3
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The Pesky PWDIS Feature In Newer SATA Specs
B00ze wrote:
Jesus what a bunch of morons! http://www.tomshardware.com/news/hdd...ure,36146.html Now in a few years when you need to buy a new hard drive, you will have to buy a new power-supply to go along with it. Regards, It's OK on desktops, because you could cobble together some sort of adapter to place inline with *each* 15p Power connector. It's going to be a real bear on server backplanes, where you have zero clearance to do anything, and the drive slides into a bay with a 15p connector mounted and soldered to the server backplane. Of course, this isn't the first time they've done this. There is a pin defined on the 15p as a disk activity light (optional). Someone at SATAIO needs a new hobby. Just not in any standards-defining field. I wonder if they have any engineers on staff ? https://sata-io.org/ So the next question will be, does the signal have a pullup or a pulldown on it ? If it has a pullup, then not only would you need to cut the 3.3V wire running to the 15p, you'd also have to ground the signal, as otherwise the pullup on the drive end maintains a PWDIS state. It may have to be actively pulled to ground, so when you cut the 3.3V wire, you'd have to ground it as well. Which means slicing something else to get access to a ground. Paul |
#4
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The Pesky PWDIS Feature In Newer SATA Specs
On 2017-12-21 11:18, Paul wrote:
B00ze wrote: Jesus what a bunch of morons! http://www.tomshardware.com/news/hdd...ure,36146.html Now in a few years when you need to buy a new hard drive, you will have to buy a new power-supply to go along with it. Regards, It's OK on desktops, because you could cobble together some sort of adapter to place inline with *each* 15p Power connector. I don't have a lot of clearance for that in my case, I have some, but inline would have to be relatively small... It's going to be a real bear on server backplanes, where you have zero clearance to do anything, and the drive slides into a bay with a 15p connector mounted and soldered to the server backplane. I had not thought of that but you are right! Of course, this isn't the first time they've done this. There is a pin defined on the 15p as a disk activity light (optional). Someone at SATAIO needs a new hobby. Just not in any standards-defining field. I wonder if they have any engineers on staff ? https://sata-io.org/ Lol, they must have. I have no idea why they thought using PIN3 and making it active when HIGH was a good idea. Every single SATA cable out there currently has that pin set to HIGH; those new drives will not work anywhere... So the next question will be, does the signal have a pullup or a pulldown on it ? If it has a pullup, then not only would you need to cut the 3.3V wire running to the 15p, you'd also have to ground the signal, as otherwise the pullup on the drive end maintains a PWDIS state. It may have to be actively pulled to ground, so when you cut the 3.3V wire, you'd have to ground it as well. Which means slicing something else to get access to a ground. I had definitively not thought of that! I have been discussing this over @ EVGA; I was hoping that EVGA would be offering PSU cables for SATA where PIN 3 was disconnected; they may have to offer cables where PIN 3 is grounded instead. Modifying my EVGA cables is always possible, they are like ribbon cables, so they are easy to separate, cut and solder together, but I'm getting old, I prefer just buying fixed cables from EVGA to modding my own. Regards, -- ! _\|/_ Sylvain / ! (o o) Memberavid-Suzuki-Fdn/EFF/Red+Cross/SPCA/Planetary-Society oO-( )-Oo "Au contraire, mon capitaine! HEEE'S BAAAACK!!!" -Q |
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