Service Action to Prevent PSU Failures in ReadyNAS NV/NV+

SJMarty wrote:
I checked and my serial number does not appear to be in the range. I did, however, recently replace my NV power supply with the fanless one. A few questions... Do I need to do anything?

Yes, since you've replaced with a fanless PSU, you should either install the add-on or reverse the fan.

Can the power supply temperature be checked via FrontView?

Unfortunately we don't have a sensor there.

If the fan is reversed, won't it then be drawing dust directly in through the back, blowing it across the drives, and then depositing it on the back of the dust screen on the front grille?

It's possible the dust may collect on the dust screen in the front and you would have to regularly vaccuum it or use an air spray occasionally to clear it -- similar to what you would do to the outside of the mesh when the fan pulling the air into the system. What you can do to avoid this is to remove the dust screen. Just open the door, use a needle or a tweezer to get ahold of the mesh and pull out carefully. This actually helps in lowering the disk temperature more, allowing the fan to operate at lower RPM longer before needing to kick it up due to heat.