Hi, i've got a problem with my brand new WD Black 4 Tb HDD: after installation, creating GPT and quick format, i've proceeded to transfer 2 Tb of data from an older WD Green. The transfer was running at a quite stable 70Mb/s speed. After several hours the speed dropped at 30Mb/s and never went up again. After the transfer ended I've run a couple of benchmarking tools and the read and write speed were always between 30 and 40 Mb/s. I've also tried the hdd on another system and the benchmarks were consistent with the one performed earlier. Then i proceeded to run a complete formatting. after that the benchmark showed a speed of 170 Mb/s. What was wrong before the formatting? is the drive defective? I've already purchased a HGST Ultrastar 7K4000 4TB HUS724040ALE640 planning to send back the WD Black. What should I do? Thank you in advance for the help!
What's wrong with my WD Black 4Tb hdd?
- Thread starter porpeller
- Start date
Solution
Boogieman_WD
Judicious
- Jul 31, 2014
- 6,050
- 2
- 35,960
Hey there, porpeller.
I' m truly sorry to hear about the issues you are having with your new HDD.
If the drive is having the same issue with two different systems it's very unlikely to be caused by faulty cables or a SATA port, so good job on trying it out with a different computer. You could download DLG (Data Lifeguard) and run both tests (Quick and Extended) to see if anything unusual pops-up. Note that since the drive is 4TB it will probably take several hours to complete the extended test since it scans the sectors of the drives one by one. Here's how to perform the tests: How to test a drive for problems using Data Lifeguard Diagnostics for Windows.
However if you are set on returning the drive, you could contact our customer support or the re-seller you got it from and ask about RMA: WD Customer Support Portal.
Please let me know how everything goes.
Boogieman_WD
I' m truly sorry to hear about the issues you are having with your new HDD.
If the drive is having the same issue with two different systems it's very unlikely to be caused by faulty cables or a SATA port, so good job on trying it out with a different computer. You could download DLG (Data Lifeguard) and run both tests (Quick and Extended) to see if anything unusual pops-up. Note that since the drive is 4TB it will probably take several hours to complete the extended test since it scans the sectors of the drives one by one. Here's how to perform the tests: How to test a drive for problems using Data Lifeguard Diagnostics for Windows.
However if you are set on returning the drive, you could contact our customer support or the re-seller you got it from and ask about RMA: WD Customer Support Portal.
Please let me know how everything goes.
Boogieman_WD
Thank you for replying. here i attach the screens of the tests i've made after the complete formatting:
crystaldiskinfo
Scandisk
the scan disk showed 368 damaged clusters and crystalDiskInfo showed a raw value of 15 current pending sector count. Does this mean the disk is defective?
crystaldiskinfo
Scandisk
the scan disk showed 368 damaged clusters and crystalDiskInfo showed a raw value of 15 current pending sector count. Does this mean the disk is defective?
Boogieman_WD
Judicious
- Jul 31, 2014
- 6,050
- 2
- 35,960
Unfortunately, yes. It looks like the drive has bad sectors, which would mean that you can RMA it, either by going for the vendor you've got it from, or by going directly through WD.
Sorry you had to deal with that kind of trouble with a new drive, but unfortunately these things happen sometimes with mechanical and electronic devices. If you are going with RMA through WD, you can create an RMA case via our support portal (the link is in my previous post).
Please let me know if you have any questions whatsoever.
Sorry you had to deal with that kind of trouble with a new drive, but unfortunately these things happen sometimes with mechanical and electronic devices. If you are going with RMA through WD, you can create an RMA case via our support portal (the link is in my previous post).
Please let me know if you have any questions whatsoever.
Boogieman_WD
Judicious
- Jul 31, 2014
- 6,050
- 2
- 35,960
You are welcome. Sorry again for the unfortunate outcome.
For future reference, formatting a hard drive should not cause issues or damage drive in any way. Neither of quick format, full format or low level format should affect the drive's performance or damage it. If a problem arises after a similar process for most cases the culprits for the issue are probably, the cable/s connecting the device to the computer, the port that the device is connected to or the drive itself.
For future reference, formatting a hard drive should not cause issues or damage drive in any way. Neither of quick format, full format or low level format should affect the drive's performance or damage it. If a problem arises after a similar process for most cases the culprits for the issue are probably, the cable/s connecting the device to the computer, the port that the device is connected to or the drive itself.
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