Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX

Why did you pick this product vs others?:After years of faithful service, my original NAS drives were starting to get long in the tooth. Between signs of wear and ever-growing storage needs, I knew it was time for an upgrade—and the WD Red Plus 10TB hit the sweet spot.I’ve used WD Reds in my NAS for years and they’ve always been rock solid. This drive is no exception—quiet, fast for a spinning disk, and stays cool even under constant access. I appreciate that it uses CMR (not SMR), which is essential for proper RAID performance and long-term reliability.Installation was plug-and-play in my QNAP, and it was recognized instantly. It’s also noticeably quicker than my older 5400 RPM drives thanks to the 7200 RPM speed and 256MB cache.If your NAS drives are starting to show their age—or you just need more space—this is a great way to breathe new life into your system. WD Red Plus continues to deliver the kind of reliability I trust with all my critical data.

I picked up this 10TB WD Red Plus as a replacement for a failing drive in my NAS, and it performed exactly as hoped. The unit successfully rebuilt the RAID array using this drive - yes, it took quite a while since I'm running consumer-grade equipment, but that's expected with a 10TB rebuild. The 7200 RPM speed and CMR technology really shine in NAS applications compared to SMR drives that can struggle during rebuilds.Everything is running smoothly now and my data feels much better protected. The 256MB cache and SATA 6 Gb/s interface keep up well with my network demands. WD Red Plus drives are specifically designed for NAS environments, and it shows - no compatibility issues, proper vibration handling, and built to run 24/7. Worth every penny for the peace of mind, especially when replacing a failing drive. If you're running a home NAS, don't cheap out on drives - this is exactly what you want protecting your data.

These took under a minute each to install into my Synology DS920+ NAS. Since it was all new gear, I let it do a through drive check as part of initializing which took a long time. I think it may ave been about two days. In theory, I could have used it during this time, but I just started it and ignored it.During installation, the 920 whines about any accessories (memory, drives) that aren't Synology's own and that included these. On the 922, they change from whining to much more obnoxious contrived incompatibilities, but this combination was chosen because exactly once, during insteallation, it warns you that its not a supported combination and that's that. Probably if there were a support issue involving data loss, they'd remind you of that oath you took to not complain, but in reality this is a very common combination that works quite well.Fan and normal noise is quite minimal. There was a noticeable clunk during a head seek. I reduced this by offlining the unit so I could remove power then applying the fuzzy half of a hook-and-loop fastener to the bottom of the bottom rail. That gave it support and a little bit of padding so the metal cage didn't serve as a drum skin for the oh-so-tiny motion that got amplified when transferred to the sheet metal.I'm looking forward to getting many, many years from these drives, like I did from the 4TB WD these are replacing. Those drives have no reading errors. Size grows and no drives are infallible, so I opted to replace them on my schedule (OK, and on Amazon Day special. :-) ) instead of letting the drive pick its own replacement day, taking my data with it.

Works well and quick in my ugreen dxp2800 Nas. Easy to use and install, and the price per TB isn't too bad. 4tb is a good starting capacity for a server/Nas. I do like that it specifically shows that it is for a nas on the front, unlike some brands, and it looks nice.

EDIT: The good: found an email method to establish contact and had a reply/RMA/return shipping label the following day. Kudos for that and the free return.Then the bad: Since I had purchased a replacement locally, I did not pay the $25 for them shipping the replacement before receiving the defective drive. I shipped the defective HDD back on Dec. 23 from NY, which arrived in CA on January 2 via UPS. Western Digital took multiple days to acknowledge receipt, then informed me they shipped the replacement on January 8. UPS says the label wasn't created until January 9 and they didn't have my package. It stayed that way through the following week, and I was speculating WD used a third party carrier to get packages to the east coast before turning them over to UPS. Nope. On January 14 UPS said they had my package--in CA. It is scheduled to arrive on January 21. So if that happens, the turnaround will be December 23 to January 21. Western Digital Red products are for mission critical use. Bad enough when they fail. Just too many time gaps in the process. Not acceptable.Original ReviewBought two of these along with a Synology NAS in February of 2024. One of the drives failed in December and had to go out to Best Buy to replace it quickly. Creating an account to register the product as a consumer kept bringing me to a business portal. Finally got that solved and registered the HDD. Processing and RMA sends you through half a dozen screens. They recognized the product serial number as in warranty, but at the end of the process the RMA fails with a STATCODE355 error and to contact support. Went through this over a dozen times. Calling the warranty replacement assistance sends you to a loop that does not provide a person to address the error code.

Needed new bigger drives for my sons NAS. These worked great, I got his drives for my NAS win win all the way round.

Excellent build quality, looks very durable and I believe it won’t cause any issues for many years. It’s also very quiet, highly recommended.