Limitations of RN51600

Korky wrote:

I thought the Western Digital Re 4 TB [ WDC WD4000FYYZ-01UL1B0 ] wasn't supported by the 516. See viewtopic.php?t=71082&p=394874 So my question is how hot is your readynas 516 with 6 drives? I'm was about to purchase some of the same Disks until I came upon the above article :cry: Now that you have been using these hdrives in your NAS for some time any pointers or advice / recommendation you ( or anyone else ) can give me will be much appreciated. I have checked the hd compatibility list and can confirm the above drive is not on the list. The next best drive is the Seagate 4 TB NAS HDD [ ST4000VN000-1H4168 ] is on the HCL. Thanks in advance.

I've been running these WDC WD4000FYYZ-01ULB0 4TB disks in a RN516 for over a year now. My disks' temperature pretty much hovers around the values depicted below (within a plus/minus 2 degrees range). So this looks to me like normal operation temperatures. This is confirmed on the last page of the specification sheet, where it lists 5-55 degrees C as operating temperatures.



The real variation is in the RPM of the fan. On a cold autumn day like today it's running idle around 835 RPM. On a hot summer's day it might go well over 1400 RPM. To me it seems that these WDC WD4000FYYZ-01ULB0 4TB can be used without problems in RN516. Of course only time will tell if I'm right. It is true that the disks in the middle of the disk stack are always a couple degrees higher in temperature. Eventually, when the disks will get older, those might be the first to go. MTBF is 1.200.000 hours, so I should be good for a couple more years, I hope.



One should 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 the mesh around the drive bays. Monitor your temprature graph in System -> Performance to see the highs and lows of the System and CPU temperatures.