One of our clients (not a big one probably about 50 users) has a backup Server which ran out of space, so he decided to buy USB with 3.9 TB size and plugged into backup Server ( I know it is not ideal, but that's his choice). We setup backups of 5 servers to that USB device.
He plugs in another USB to backup server do daily backups to take it off site.
We run scripts to automatically delete old backups of the USB disk that is supposed to be taken offsite.
We installed USBDLM software to assign only specific driver letters to USB device.
Yesterday Server restarted in middle of the day and it assigned Drive letter that is supposed to be for offsite USB to USB that we use for backups and vise-versa. Our script deleted all the backups.
Now literally users doesn't have any backups.
Can you please advise what is the best solution for this issue?