4TB 64MB Cache 7200PM SATA 6.0Gb/s 3.5in Internal Surveillance CCTV DVR Hard Drive (MD4000GSA6472DVR) - w/ 2 Year Warranty, Mechanical Hard Disk

Built 2 RAID 5 NAS's with these, does the job well

Bought this drive to store more SciFi TV shows as my 2TB was full.It's quiet, but runs a little on the warm side, but within tolerance.I did a goof when initializing it and told Windows to make it MBR instead of GPT.OOPS! Windows 10 only saw a 2TB partition and a 1.6TB partition which was inaccessible.Fixed that with Drive Management, converted it from MBR to GPT and it showed up as 4TB.It IS a new drive as you can see from the picture of the SMART data hours, but no manufacturing date.It was never powered up before I got it (AFAIK), so it could be recently new or years old.Also it has a 2 year warranty and the serial number was registered by the seller.

My Reolink 16 port switch, for surveillance video cameras, originally had a Seagate 3TB drive. After so many years the drive failed. I ordered two drives since the switch said it would take up to two drives internally. The largest single drive that you can install in this Reolink switch is 4TB. I installed both, the Reolnk switch picked up and initialized both drives without issue. Easy install. Does not include mounting screws.

March 2025: After 5 years, a failed UPS Backup killed this HDD; it was reliable after all, albeit noisey.May 2020: The MaxDigitalData 4TB 64MB Cache 7200PM SATA 6.0Gb/s 3.5" Internal Surveillance CCTV DVR Hard Drive was a very good buy. I've had it now for over two weeks, so this review isn't very pertinent. However, after reading the other reviews of longtime owners, I'm concerned about the longevity of this drive.The HDD that came with my inexpensive xMart-o CCTV NVR made *some* noise, like "chikka-chikka -chirrrrr, chikka-chikka". But this one started off with "WHARR WHARR GURRRR GURRRRR", that a "chkrrrlll chkrrrlll chkkrrrrlll". And it sometimes a hard grinding "WHHAAAAAHHHH" or "KHHRRRRRLLL". I am thinking there something wrong with this drive. I have deep concerns about the internals, and then I read about the heat (something that wasn't an issue my last drive). My last drive was "killed" because I couldn't my screen to come back on when it went out automatically. So I just unplugged it, and think it made "CHHKKKRRKKK" sound, after that it stopped being recognized. Not even when I put it inside an USB Enclosure and hooked it to my second PC.When I got the MaxDigitalData SATA HDD, the installation was flawless, and my system had no issue recognizing at initializing it. It even seems to run smoother. I did notice with the last HDD accessing video was sluggish. This does not seem to be the case with this drive. What I can report is that after two weeks the "WHHAARRRRWHARRRR" sound has stopped and has become a quieter ""qurrrrrllll qurrrlllll". Oh, well. It came with a two year warranty and I registered it online (I think..), so if anything happens between now and then...

i bought this drive cause all my external storage drives were full and needed more storage. been using a similar make 1 TB drive for my surveillance cam for over a year now in a docking station and it's running fine. this drive i just got is 4 TB surveillance drive, it should last forever just storing and watching movies with it.i am going to use it in the same docking station which has another open slot, for storage. it's the WavLink drive duplicator i got here last year on Amazon for around $20.00 which has also proven it self great to use. have already used it to duplicate my laptop drives and they are perfect. now using it for a docking station. i have to get and use what i can afford.

The people that I dealt with were fine!The hard-drive is not. I got this for my surveillance system, so it runs continuously. The FIRST one was fairly noisy and ran hot. I exchanged it for a SECOND one because I was concerned about its longevity and the high temperatures frying the hard-drive and the surveillance system electronics. The SECOND one was worse. It sounded like it was slamming the read/write heads about once per minute and the temperature on top of the drive was about 120F in an open, well-ventilated room.I bought another brand of hard-drive from a competitor. Its temperature is consistently at or below 90F doing exactly the same thing. it is also much quieter with no head slamming.

For the cost I really can't complain that this drive only lasted one year.No clue how to process the '2 year mfg warranty'.

I purchased this product sometime back and has performed reliably