Hello
I wanted to check here if anyone has any idea what is going on or if I just have been unlucky.

I bought an WD Ultrastar 20TB because they are very reasonable prized. 
I know data center drives can have problems in a pc/home server because of sata-power pin3, but I bought the one with legacy pin3 config, "Legacy Pin 3 config – no Power Disable support" and SE (no self encrypt support, SED) and still I have problemes
Unraid cant see the disk at all.

I tried the disk on my w10 desktop too, with an molex to sata as I heard this bypass the pin3 problem, and my desktop bios/efi dont see the drive, but windows do, it shows up as an 18TB as expected, but when I try to initialize I get an i/o error. 
The sata cable I used here is new and I know it works.
The molex/sata adapter I used for years with no problems.

That looks like a bad disk.

On 9/1/2023 at 2:10 PM, JorgeB said:

That looks like a bad disk.

I contacted seller and got an rma on it and today I got it refunded
First time in years I got a bad disk, but it had to happen sooner or later I guess.

Now I look at the Seagate Exos X20 20TB instead. In the specs power disable is not mentioned at all on the sata version.
Also looks as a good disk and it is a bit cheaper than the Ultrastar

6 hours ago, isvein said:

I contacted seller and got an rma on it and today I got it refunded
First time in years I got a bad disk, but it had to happen sooner or later I guess.

Now I look at the Seagate Exos X20 20TB instead. In the specs power disable is not mentioned at all on the sata version.
Also looks as a good disk and it is a bit cheaper than the Ultrastar

Just in case, since you haven't mentioned your source of the purchase.

If buying new (or even used), try to get one from a higher volume and generally more reputable seller.

 

When buying "New" it's real tempting to go with the lowest price listings from unknown stores.

The problem with that would be that you won't know (or rather have much higher uncertainty) about their source of inventory, its storage and handling conditions.

 

And if the prices are real low they might even be outright scammers re-selling a previously sold product as new.

7 hours ago, isvein said:

Now I look at the Seagate Exos X20 20TB instead. In the specs power disable is not mentioned at all on the sata version.

The 3.3V pin problem is generally known to affect WDs.

Or at least I'm not aware of it being reported on Seagates nearly as widely as it happens with WDs.

4 hours ago, Lolight said:

Just in case, since you haven't mentioned your source of the purchase.

If buying new (or even used), try to get one from a higher volume and generally more reputable seller.

 

When buying "New" it's real tempting to go with the lowest price listings from unknown stores.

The problem with that would be that you won't know (or rather have much higher uncertainty) about their source of inventory, its storage and handling conditions.

 

And if the prices are real low they might even be outright scammers re-selling a previously sold product as new.

Good advice 🙂 

The store was not the problem, bought from one of the 5 biggest computer stores here in Norway. 

Im giving up soon
Got an brand new Segate X20 20TB and as soon as I start to precleare it it starts to throw smart errors and after a while preclear failed
The numbers just keep going up when I try to do stuff too.

 

Edit: according to this post on reddit, this is normal for segate disks, Im confused

Edited September 11, 20232 yr by isvein

SMART looks fine, run an extended SMART test. 

On 9/12/2023 at 8:51 AM, JorgeB said:

SMART looks fine, run an extended SMART test. 

So this happened

-during preclear disk suddenly failed.
-tried again but this time with pre-read turned on, after 24hours read failed with errors that Unraid no longer can find the disk.
-connected the disk to my w10-pc to check with SeaTools, quick test passed.
-Checked with long test, after 10min, the disk just disappears from SeaTools, and from windows, just like it powered off.
-Just to be sure if the problem was with my sata/molex power and/or sata cable, I did the same tests, long and short with my Segate Ironwolf 8TB, all test pass and no problems.
-Tested with Seatools 2min test the day after, the disk disappears/power off after 10sec

Looks like I got another dud after the problems with the Ultrastar