Rich Freeman wrote: > On Thu, May 9, 2024 at 5:12 PM Dale <rdalek1...@gmail.com> wrote: >> I'm looking at buying another drive. I'm trying to avoid buying one >> with the PWDIS pin. I'm looking at the specs to see if it says anything >> about the feature, there or not there. I'm not seeing anything. This >> is what I'm looking at. >> >> https://www.seagate.com/files/www-content/datasheets/pdfs/exos-x16-DS2011-1-1904US-en_US.pdf >> >> Can someone tell me how to know when a drive has PWDIS and when it >> doesn't? Is there some term for it that shows in the specs and I'm >> missing it? Or is there no way to really know? > I think it would be labeled as such. That is for a genuine retail > version of the drive with retail labeling. > > So if you get the drive and it has the pretty Exos logo and green > colors and the model number that matches the datasheet and all that > stuff, then it probably won't have issues. > > However, if you're buying something off ebay, and the drive just has a > plain white label, and a model number that doesn't actually match the > datasheet, but some random webpage or reddit post assures you that it > is the same thing, well, it probably is the same thing, but it might > very well have that power issue. > > Those shucked drives generally come from USB enclosures, and the drive > on the inside might be a rebranded Exos with alternative firmware/etc, > but the label isn't going to actually say that, and the package will > say "EasyStore USB Drive" or whatever it is sold as. If you use it > the way it is sold, then you again won't have issues since its > internal USB HBA will do the right thing. It is just that when you > rip open the box that all bets are off. > > The actual drives sold for enterprise use generally aren't sold in > retail packaging as I understand it. To get one of those officially > you need to buy them through a server vendor or some other > enterprise-oriented partner, who probably has a nice sales person who > will treat you to a free lunch while you talk about the PWDIS > requirements of the $10M pallet of drives you're about to buy. >
I found this. https://www.seagate.com/www-content/product-content/enterprise-hdd-fam/exos-x-16/en-us/docs/100845789j.pdf If you scroll down to page 29, or search for Table 11, it says it has a 3.3V for pin 1 to pin 3. Does that indicate it has the PWDIS feature? I'm buying these from a company that has server in the name. I buy drives of this type because of the way I use it. It runs 24/7. Downtime is minimal here. This is a link to the drives I'm looking at. I'm not sure which is best to be honest. Opinions?? https://www.ebay.com/itm/124627725410 https://www.ebay.com/itm/304194684486 I'm interested in your thoughts on the PWDIS and if one of those drives would be better for my use case. Biggest thing, runs 24/7. Oh, is there a adapter that I can buy that fixes this? I did a ebay search but didn't find anything. Maybe I used the wrong terms. Dale :-) :-) P. S. I'm considering using SAS controllers again. Do you have links that explains how drives are connected and such? I'll likely continue to use SATA drives since I have so many but may start buying SAS drives. I think both can be used depending on the cable. From what I've read, there is more than one way for a SAS controller to work. It's confusing at times.
