Western Digital2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD20PURZ

It is a surveillance drive for NVR applications. I am assuming that anyone who knows the difference will understand this & the different build construction of different drives.It is quiet, no obvious noise, I have it running in an Amcrest brand NVR which it fit perfectly, screw holes lined up well, the cable connectors fit perfectly. I cannot measure the temperature during operation, but the NVR does not run hot or even warm, so that is a good sign to me.Longevity - It has not been running for very long, but the WD specs give an expected life (mean measured value, I assume) so I expect it to meet the mean life expectancy. Anything past that is a bonus.Use it for surveillance & it is fine, these are typically important pieces of stored data, but not normally mission critical, if they are, they you are probably an IT expert & you know what to do to back them up anyway (I am NOT an expert, I just have enough knowledge to be dangerous :-)....)Overall I have had good luck with different WD drives over the years & I expect no less from this oneI did not get paid, reimbursed, of given anything for free (never do as I am not important enough online!) so you are getting my own unbiased, honest opinion & nothing but that. :-)

My swann security dvr would not record. A symbol on the monitor indicated the hard drive was malfunctioning. Changed the hard drive super easy but the swann would work. Found out the power cord was not giving full power. Changed the power cord and my swann dvr works like brand new...The hard drive super easy to replace and works great...no problems

Thanks for the fast shipping, and the HD Working properly, but just kinda making some noise (Clicking sound) after adding this, so far the recording running fine. will keep it posted after week of use. thanks again.

Got my Lorex HD recorder back up and running. Was a pretty easy replacement. Pretty much plug and play.

Drive arrived in padded envelope. Inside was a cardboard box which was a correct drive package. Opening that unsealed box, I discovered a few foam peanuts in addition to the standard plastic frame that typically holds drives.I was initially concerned that I had received a refurbished or used drive, but the drive itself was in a sealed, mylar pouch with a Western Digital label. This drive was not in retail packaging, which is perfectly fine. It would have been nice to have known this so that I wouldn't have had the initial concerns mentioned above.The drive was perfect and continues to work well. I would buy again from this vendor.

No problems at all 😁💯

This hard drive is made to handle constant, small reads and writes such that a NVR system would do. I have another one that's been running continuously for about 4 years with no issues. A regular PC hard drive probably would not last very long in this sort of environment.

No complaints with this hard drive. Using in a Heimvision HM241 1080P wireless security camera system with 8 cameras. All cameras are recording 24/7. I have over a months worth of video stored from all cameras. There is still around 60% free space available. I appreciate when something my purchases works as advertised, without complications. I'm not sure if there are cheaper brands or options available. There is no price tag we can put on our time. My time is valuable to me. This product wasted none of my time so I'm happy with my money well spent.