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I have a brand new 4TB Seagate Barracuda HDD that I bought barely 4 weeks ago that seems to act weirdly since a few days.

I noticed that whenever theres any kind of activity(writing/reading)on the HDD, the hard drive turns super slow, and has 100% disk usage, and writes/read at less than 1mb/s when trying to do other operations at the same time on it (normally does about 160mb/s write and read speed when under no load).

For example, yesterday, I was downloading 2 600mb files from 2 websites, the files were being downloaded slowly (50kb/s) due to websites restrictions, so there was about 3hrs left of download. These 2 files where being downloaded on that Seagate HDD.

I left my PC running and came back 3hrs later, the files were done downloading (600/600mb) but seemed to be on hold to be copied on the hdd, and the HDD was again at 100% disk usage and terribly slow...

If I try to turn off the PC while this HDD is stuck/frozen at 100% disk usage, the PC half turns off, everything seems to turn off but the power light only turns off(to indicate that the PC is REALLY completely off) 2-3mins+ after the system has turned off; wich makes me guess that it is because of the HDD that is stuck/frozen at 100% disk usage and the PC is waiting for it to turn off..

Opening a program installed on that HDD can sometime take a while and when I do so, again the disk goes to 100% disk usage, and even after closing the program the disk still remains at 100% even when no copy operation or program running on that HDD are being executed... The 100% disk usage can remain a good 5mins after closing down application that were running from it, before the disk usage finally goes back to normal(0%).

If I try to copy several big files on it, disk jumps to 100% again, and if I cancel the copy, the disk still stays at 100% for a few minutes before going back to 0%... Running games from the HDD works just fine..

This 100% disk usage seems to happens randomly and not everytime wich is weird. I tried to check in ressource monitor to see whats using all or most of the disk ressources, but its most of the time ''System''(wich is the write/read operation being executed on the at that time HDD(file copy, application running on it etc..) and nothing else really..

I tried to run Seatools(Seagate drive testing software) tests on it, and all tests passed succesfully

I only have 7 days left to return this HDD, so I am wondering if someone ever had that issue with Barracuda HDD, or know what could be the problem. Like I said the HDD is brand new..

Thank you

EDIT: Screenshot of the HDD health informations:Seagate Barracuda 4TB informations

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    Normal work should not do this. Summarize the above thoughts in a concise note and return it rather than take time troubleshooting it.
    – John
    Jan 27, 2021 at 0:56
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    “I only have 7 days left to return this HDD…” Just return it as defective and get a new one. If you have a lack of confidence already it won’t go away unless you get a new drive. Jan 27, 2021 at 1:11
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    @Giacomo1968 Im thinking of just getting a refund for this one and going with Western Digital HDD instead.. Never had issue with WD, and this is the second time I have problems with Seagate... I went with seagate because this HDD had 254mb cache vs 64mb cache on the Western digital one...
    – Martin B.
    Jan 27, 2021 at 1:20
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    What do the SMART stats on the disk say? I've recieved new disks that already had current pending sectors and a high raw read error rate. back to the distributor they went. Jan 27, 2021 at 1:58
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    @FrankThomas I just decided to return it and I bought a Western Digital blue drive instead of the same capacity. It has 64mb cache instead of 256mb that the seagate had, but I doubt there will be major performance differences since both drive are 5400rpm. Let's see if the same 100% disk usage occurs again with this one. For now it works fine, but I just plugged it in its brand new. Will keep you updated. Thank you
    – Martin B.
    Jan 29, 2021 at 18:08

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