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Using in NAS, can keep up with my 100MB network copy. Space per price this is perfect for backups. Bought 3, no issues.

Drive is a better price than most consumer 6TB drive and has much better specifications. This drives is rated for 600k load/unload cycles, most other drives, even some with 5 year warranties are rated for 300k. This drive has a read error rate that is 100x better than most consumer class drives. 1 sectore per 10E15 vs 10E14 for consumer class drives like the Barracuda or WD Blue. Mean Time Before Failure of 2 million hours. Rated for a workload of 550TB per year. Annualized Failure Rate of 0.44%. Advanced Write Caching via internal NOR flash. 5 year warranty. Specifications allow for 24x7 operation of the drive. Some other drives including Seagate Barracuda are only specced for 40 hours power on time a week! 8,760 hours a year versus 2,400. This drive uses Perpendicular Magnetic Recording and not the horrible Shingled Magnetic Recording that Seagate's consumer class drives use. SMR has such a bad reputation Seagate has changed the name to TGMR, but make no mistake TGMR means SMR.

Quiet under full load Great NAS performance

Had the drives about 6 months - running in a G-Tech 2 drive Thunderbolt as Raid 0 on MB-PRO 17. Getting 273MB write, 263MB read.

perfect for NAS. I don't really need the AI function in the drives they sit in a UNIFI protect set up. I have the 24TB one in my home protect set up and initially it was loud, but it has become more quite since it finished it originally set up. I have 8 of the 8TB drives with no issues. 2 are cold spares. when they go in I'll order 2 more. I take the drives that are out of warranty and typically put them in our 3rd tier backup NAS systems and they seem to live forever. Technically out of "service life" but that doesn't mean I take them offline, I stick them into a lower use environment to live out their days storing old accounting stuff. Nothing as exciting as VIDEO

Got these to increase storage size in my Synology NAS. Their list of recommended hard drives included the WD30EFRX, not the ZX, but I decided to chance it anyway and have had no problems. I swapped out a pair of 1 TB drives for a pair of these 3TB drives and the NAS server had no problems with the transfer even though it warned me these weren't "approved" drives. I've only had them for a few weeks so I can't say anything about long term reliability but so far they have done exactly what I wanted.

Performs as expected. Very reliable HDD.