You're are more technical than me I have the older model nas-s55hde and was wondering if the 80gb hdd stopped working would the unit be useless.
I decided to open it and disconnect the hdd and sure enough it won't boot just restarts constantly.
I tried cloning the hdd with clonezilla but it failed on 2 Dev folders, I tried different drives then decided to format the original hdd connected to the unit and then cloned it to a solid state and it worked.
Do you guys still use yours or have you moved on?