How to securely wipe your ReadyNAS

mdgm wrote:

In any case unless you are paranoid or have a legal requirement to do a secure wipe, doing an ordinary factory default should be sufficient. With a 3 or more disk array, disposing of disks separately would also be something that could be done. With e.g. a 3 disk X-RAID array two disks would be needed to recover data and even then if you got those two disks and a factory default had been done on those two disks to wipe them you wouldn't recover data. Other things like connecting the disk up to a PC and formatting it using NTFS could be done. If a disk is formatted with NTFS most people would assume it was taken from a Windows Machine.

That "should" in your post was just the part I was trying to eliminate for myself, I just wanted to be sure without having to move hard disks out of the ReadyNAS and without having to sell them separately. I just wanted an easy solution where I can sell the complete ReadyNAS including disks without having doubts about anyone being able to recover data.