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.

My third WD NAS, by need not failure. I keep getting larger ones because of my need for more space.Have been using them for years. I used other brand and was disappointed by crashes (Seagate). Now I only buy WD.

Used as a replacement/upgrade HDD for a TiVo Roamio. Easily installed (lots of YT DIY videos).TiVo automatically formatted the drive and booted up without any issues. Working normally with the original TiVo Roamio power supply/cord, etc.. Will post an update if there are any problems.Appreciate WD's 3-year warranty.

I have about a dozen of these drives on my media server and so far, they've been working great. My oldest have been in use for a few years now and (knock wood!) I've had no issues with them at all. They are all installed in external multi-drive enclosures (I'm using a mixture of ProBox, IOCrest and Terramaster units) connected by USB 3 and 3.2. I keep buying more (in pairs -- one to use and one for backup) when I need to expand.

I bought two of WD Red PRO 18TB in October when they were on sale to replace the current disks in my Home Backup NAS. I bought 2 because I need two identical drives for the NAS.Disk 1 arrived a few days later and disk 2 arrived a few days later. And now the problems begun:Disk 2 which was sent to me wasn't an 18TB drive, it was only 6TB! A harmless mistake? Fraud? Who knows... Very annoying anyways...Now I tried to get disk 2 exchanged, but Amazon could only offer a refund, because the drives were out of stock with unknown restock date. Too bad because I didn't want a refund, since I got the drives for a good price and now they were more than 25% more expensive...So I had to wait about 3 weeks for the disk to be back in stock and be able to have it exchanged instead of just getting a refund.Today the exchanged drive finally arrived. This time it was as ordered 18TB. I installed both drives in my NAS. One drive was GOOD the other was recognized as BAD during the drive self test. The temperature reading was off and caused a S.M.A.R.T error. In fact there was no temperature reading at all for 1 drive. So I let the drive warm up for a few hours and tried it again. Same thing. SMART could no be read and there was no temperature shown for 1 of the 2 drives.I took both drives out of the NAS and tried to see what's going on by installing them in a Windows PC.One drive is fine. SMART is OK. No errors.The other drives just makes a weird repetitive noise and doesn't spin up. It's not recognized by windows. It's DOA (Dead On Arrival)!I checked which drive it was and it was the 2nd drive. The one I received as replacement today! So after the long wait and the whole odyssey of exchanging the drive the drive arrived DOA.Was it bad luck? Maybe.Do I trust these drives? No, not anymore. Never had a drive DOA.This was by far my worst experience buying Western Digital drives on Amazon! And I have quite a lot of them (in total probably about 16 different WD Elements and MyBooks).Since these 2 drives were supposed to be used in a NAS which should hold the backups of my personal and work PCs I thought I'd buy the more expensive "real" WD Red Pro drives, which are designed for 24/7 operation, but what did I get? Just a way too long frustrating experience overall.Maybe I was just unlucky in this case, but I never had a problem with a shucked drive. So back to shucking external drives...I CANNOT recommend the WD Red Pro 18TB drives at this point.PS: the HDD came in the original Western Digital box which then was packed in one of the thin Amazon air bubble envelopes. Maybe it's an issue that the drives aren't shipped better protected? Not sure. The delivery driver dropped it off quite carefully, though. No idea what happened to the drive in between...

I have a home NAS that is filled with WD RED drives. I wanted to expand the capacity, so I was replacing a 1TB drive, with this 4TB drive. Unfortunately, even with much time spend with support, I could not get my Synology NAS to recognize this drive. The belief was that the drive was not working. So I returned it (and purchased again. that drive did work as expected, right away). So I did just happen to receive a flawed drive.Would I purchase again: YesWould I recommend to others: Yes

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.

exactly as described. passed all smart tests, less than 60 hours each on the two drives I purchased.