As always these are the best mechanical hard drives you can get. My opinion based on using WD drives for many years. I currently personally have over 20 WD Blacks in use. 6 of which are these 1003EFX. This one I bought a couple days ago. I have been using 5 of these in RAID 0 in an X99 workstation for over 3 years with no issue using a correct Intel hardware RAID in the X99 UEFI. I wanted to get a 6th to utilize all 6 ports available for RAID. So I purchased this last one at my Best Buy Store to complete my 6TB super fast drive array. more cost effective then any SSD, and NO worry of electronic discharge to data loss. The system has a total of 9 Western Digital Hard Drives and 3 SSDs. 6 WD Black 1TB (RAID 0) 1 WD RED 4TB 1 WD Black 2TB 1 WD Blue 640GB 1WD SN750 EK NVMe SSD 1 Samsung 970 EVO Plus 500GB 1 Samsung 850 PRO SATA SSD Approx: 15TB of storage. I will post some images below of benchmarks with 1 drive, vs 6 in raid 0.

It was a very good quality drive it worked out rea

This particular hard drive worked fine but literately stopped working 30 days after I purchased it. This hard drive literately stopped working last morning, tried to return it to the manufacturer only so I get a false message that the warranty has been void despite that it is still under a 5 year warranty, plus I have not opened the hard drive at all. I never came accross a brand new hard drive that came defective, and this is the first time I had to deal with such thing. Hard drive is no longer being detected by my computer's BIOS and I had to go as far as testing the same hard drive on other computers, both internally and externally with the help of an external SATA to USB cable, but hard drive both gets undetected by their BIOS or if using a Windows PC, it will detect it as a hard drive with 0 MB of space in it. Beware of this hard drive! If you want to buy this particular hard drive model, good luck with your hard drive because it seems to me that this model will likely come defective. I highly suggest you do your research and look for similar complaints for the same hard drive model before you even take my word. As far as I can remember, this is the unluckiest hard drive purchase I ever had.

I wanted a SATA hard drive for data storage in a new PC that came with a 256 GB solid state drive... This Western Digital is fast, includes a large cache, and comes with a good warranty... Installation and preparation was a breeze... great drive for the money... I'm very pleased with it so far.

The fact that this drive is guaranteed for 5 years and is very quiet and fast, you can't beat this drive. Also, the price was reasonable.