WD4000FYYZ

Korky wrote:
Has anyone else had any experience using the wd re drives in the 516 since ramses post a year ago. He said not to expect the drives ever getting into the hcl which is correct at writing and after a year (with various updates to OS) still does no sign. Are there any other limitation using these drives in the 516 after from obvious heat issue ?

See viewtopic.php?f=66&t=75187#p440674 for my experience with the temperatures for WD4000FYYZ-01ULB0 4TB. Note that operating temperature is 5-55 degrees C, so eventhough they have higher temperature compared to other disks, it's still within normal operating parameters. Pay attention to keep ample room behind the RN516 to allow unobstructed airflow out of the fan. And make sure to occasionly clean out gathered dust behind and below the front panel and around the disks.

Ramses wrote:
I doubt you'll ever see it in the compatibility list, because the cooling system of the ReadyNAS 516 probably is not sufficient.

My experience is that the disks stay within a relatively narrow range of 4 degrees arround their running temperature. The variation is in the RPM of the fan, e.g. 800 RPM on an autumn day and 1400 or higher on a summer's day. Looks to me the cooling system of the ReadyNas 516 is doing exactly what it is supposed to do, i.e. keeping things at a constant temperature.