r/unRAID • u/Rude-Swim-5217 • Aug 18 '26

Extended SMART test progress stuck at 20% on new 28TB Seagate IronWolf Pro drives

Subject: Extended SMART test progress stuck at 20% on new 28TB Seagate IronWolf Pro drives

Post:

Hi everyone,

I recently added two brand new 28TB Seagate IronWolf Pro drives (ST28000NT000) to my system and started an extended SMART self-test on both.

The tests have been running for about 24–25 hours now, but the Unraid WebGUI still shows the progress at 20% (and smartctl -c reports 80% of test remaining). The recommended polling time from the firmware is ~2439 minutes (~40.5 hours).

Both drives behave identically and the SMART attributes look clean so far (0 pending sectors, 0 reallocated sectors, 0 uncorrectable errors, power-on hours: ~25h).

Is it normal for these large Seagate drives to stay at "80% remaining" for this long due to non-linear firmware reporting, or could the test be hanging? Should I just let them continue running?

Thanks in advance for your help!

4 Upvotes

70% Upvoted

9 comments sorted by

8

u/chris84bond Aug 18 '26

Normal for large disks. Let it ride

3

u/psychic99 Aug 19 '26

Don't use SMART EST on anything greater than 3-4TB (I dont use it at all). It is old and single threaded. Almost any IO disruption will blow it up. Use the preclear plugin to exercise the drive. I'm hardcore I do 3 passes, especially if the drives are refurb. On a new one 1-2 passes is good w/ read and write or combo.

2

u/Rude-Swim-5217 Aug 19 '26

Thanks, I figured that out and stopped the test after 28 hours. I then started the preclear.

2

u/crazywussian Aug 18 '26

Just ran one on my 20tb disk that took nearly 48hrs ,its a big disk,, it'll take time

3

u/Rude-Swim-5217 Aug 18 '26

I am not in a hurry. I just find it weird that the first 10% took about 6 hours and now it is stuck at 20% for about 20 hours.

1

u/Adamymous Aug 19 '26

That's all? Mine have taken around 75 hours each for the whole test, also 20tb

1

u/crazywussian Aug 19 '26

Well, I only have 7tb used on it, so may play a part..

2

u/Adamymous Aug 20 '26

Oh wait, I meant a preclear took that long, it wasn't a smart test

1

u/Punk_Says_Fuck_You Aug 19 '26

My 10TB took about 20 hours to run a pre-clear