Review on 💾 High-Performance 4TB Datacenter HDD - WD SE 7200 RPM 6 Gb/s SATA with 64MB Cache - WD4000F9YZ by Trevor Bannister

In the last 4 months, four Western Digital 4TB enterprise hard drives have failed. All were about 3 years old. They start throwing read errors on my RAID system and eventually fail. During that time I lost RAID integrity twice, meaning one drive failed, and when the system was restored with a new drive, the second failed, completely wiping the RAID data. Luckily it was just my automatic backup device and nothing else failed, but if it had been my main data drive it could still have been catastrophic. Note that this is not a hard drive that will be used all the time; it only sees moderate activity as a backup system.