I started to get a orange blinking light and the hard drive lights were not coming on for my synology NAS drive.
I had tried to add another old backup to the usb ports in the back.
After much searching and trying to reinstall the entire DSM.
This gave me a Error 38 could not find the NAS to install upon.
The hard drives had come dislodged at some point. After reinserting them again it is back working properly.
There is a design fault where you cannot lock the drives into place so they can come dislodged if you hold the unit the wrong way, or shake the unit.