Michael wrote: > On Wednesday, 7 May 2025 00:30:34 British Summer Time Dale wrote: >> Dale wrote: >>> Michael wrote: >>>> On Tuesday, 6 May 2025 13:59:16 British Summer Time Dale wrote: >>>>> Michael wrote: >>> When I put it on the NAS box, I used >>> the same power cable and data cable that I use to update my backups and >>> it works without error. I don't see how it can be the data cable, power >>> or mobo in this case. All those work fine when doing backups. It >>> powers 4 hard drives in that setup. Soon to be 5 drives. > It might be the connector on the drive itself, rather than the cable. From > what you say the cable is sound. I must admit, it is unlikely the drive > arrived with a bad port on it. :-/ >
Given I had used two different cables, two different power supplies, two different mobos and got the same error, it can't be that. The odds of two cables picked at random giving the same error with the same drive has to be really small. I'd think if the power supply had issues, the OS drive would complain to, on at least one of the rigs I tested it on. I might add, I took the side off my old rig, which also used to have lots of drives in it. I get the same slow to respond message but it does connect at 6GBs. >> As a update, the long SMART test finished without error. I cycled the >> drive off for a few minutes, to be sure the kernel has finished its >> house cleaning. When I powered it back up, this was in messages. >> >> >> >> May 6 18:07:36 nas kernel: ata4: link is slow to respond, please be >> patient (ready=0) >> May 6 18:07:41 nas kernel: ata4: found unknown device (class 0) >> May 6 18:07:41 nas last message buffered 1 times >> May 6 18:07:41 nas kernel: ata4: SATA link up 3.0 Gbps (SStatus 123 >> SControl 300) > Still showing up as a SATA 2, which if you have connected it to a SATA 3 port > on the MoBo should be 6.0 Gbps. > > >> I ran a hdparm test. I wanted to see as accurately as I could what the >> speed was. I got this. >> >> >> >> root@nas ~ # hdparm -tT /dev/sdb >> >> /dev/sdb: >> Timing cached reads: 7106 MB in 2.00 seconds = 3554.48 MB/sec > These are rather pedestrian ^^^^ but I do not have any drives as large as > yours to compare. A 4G drive here shows this: > > ~ # hdparm -tT /dev/sda > > /dev/sda: > Timing cached reads: 52818 MB in 1.99 seconds = 26531.72 MB/sec > Timing buffered disk reads: 752 MB in 3.00 seconds = 250.45 MB/sec > > That's an order of magnitude higher cached reads. > > >> Timing buffered disk reads: 802 MB in 3.00 seconds = 267.03 MB/sec >> root@nas ~ # >> >> >> From what I've seen of other drives, that appears to be SATA 3 or the >> faster speed. So, it is slow to respond but connects and works fine. >> >> My question still remains tho. Do I need to return this drive because >> this is a sign of upcoming failure or is it normal and just carry on >> with the drive? >> >> Dale >> >> :-) :-) > Have you interrogated the drive using 'hdparm -I /dev/sdX' to check its > output > and compare it with your 16TB healthy drive? > > It could be the controller on this drive is faulty, or it could be its huge > storage size is achieved by some form of an internal SATA port multiplier of > sorts, essentially stitching together two drives and making them look like > one. This is just me speculating wildly as to what might be causing the > results you are seeing: > > https://forums.truenas.com/t/multiply-your-problems-with-sata-port-multipliers-and-cheap-sata-controllers/1504 > > If you don't find anything meaningful being reported with hdparm, then I > suggest it is time you contact the OEM's support and ask them directly if > they > have pulled some SMR-like trick and this is the reason for your results, or > if > it is faulty and you should RMA it. I didn't know about that until now. I already shutdown my old rig. Might try that later. It may shed some light on this mess. I did send a email to the seller tho. They sell a LOT of drives. I've seen them show a stock of over 200 drives of a particular model and a day or so later, sold out. They sell new, a few kinds of used as well. I tend to buy used but most of the time, the number of power on hours is in the single digits. The recent drives show 2 hours each. I think if it is a problem, they will know since they test a lot of drives. Maybe it is normal but if not, I'm sure they will agree to swap or refund. They sold out of the 20TB drives shortly after I ordered mine. They started with right at 200 and sold out in like 2 or 3 days. I figure I'll hear back shortly. They been pretty fast to respond to questions in the past. Dale :-) :-)
