Very slow transfer rate from internal HDD. Almost new HDD going bad?

CyberBeaR

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Jul 19, 2012
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Some 2 months ago the HDD of the PC I use at work died, so I donated a brand new HDD I had lying around in my house, as it was the stock HDD from a laptop that I had bought and switched immediately to an SSD. Oh, it's a laptop hdd in a desktop, nothing wrong there I suppose.

Everything was working well until last week, I noticed that the transfer rate was really slow as I was sending a file to my external hdd. It's not just with transfer rates, it takes forever to load considerably light programs like Firefox.

So I started testing things out. Today I transferred ~2.1GB in 14mins averaging 2.6mb/s. Yesterday I ran a Live OS and tried transferring files to my same external hdd and I came to 28mb/s. Something must be wrong. I ran HD Tune and almost everything was fine, except for the Calibration Retry Count, which the status was of warning, plus I benchmarked the hdd with Disk Tools and the results were very bad, 3mb/s.

It's important to note that this PC I'm using is the one that records the cctv cams, so it's in constant use, always recording, 24/7 for 2 months now. Also I should say that when I benchmarked and when I tried transferring the files, I had disabled recording from the cameras, so the hdd was supposed to be focused in these tasks.

And at last I ran SeaTools, as my hdd is an ST1000LM024, and it did well in all of the 3 tests I performed. Moreover it's a 1TB hdd, with 3 partitions, the boot partition is around 75% free, the recording partitions is around 800GB and has only 9GB free.

So I ask you, could my HDD be starting to fail or is this more likely to be an OS realted issue?
 
Solution
The first thing I would check is the cabling from the mobo (sata connectors) to the drives in the system (all of them - including optical (DVD) drives). Sometimes the power and/or SATA connectors can be loose or not seated properly.

If that doesn't solve the problem - I would look at removing drives from the system to see if it is related to a specific drive.
The first thing I would check is the cabling from the mobo (sata connectors) to the drives in the system (all of them - including optical (DVD) drives). Sometimes the power and/or SATA connectors can be loose or not seated properly.

If that doesn't solve the problem - I would look at removing drives from the system to see if it is related to a specific drive.
 
Solution

CyberBeaR

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Jul 19, 2012
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Before reseating the cables I did 2 speed tests, the first being 6.7 write and 2.9 read and the second one was 4.6 write and 1.8 read. I reseated the cables and still had bad results. However, when I disconnected the power and sata connectors from my optical drive and left them disconnected.. BAM. Made another 2 speed tests, 50.4 write and 61.5 read and the other one 67.9 write and 70.6 read.

I would never have thought that a faulty optical drive would interfere in the speed of my hdd, thank you very much for giving me the answer!