I've been running a 12 bay nas for 8 years the only drives I have had fail have been Seagate drives.

I now use WD reds and lately due to their very good price point on eBay Toshiba drives.

Although the Toshiba drives do seem to be slightly noisier so depends where your server is located.

i run this backup daily because the from date for it is based on the date of the last 6 monthly backup to tape

Is mullvad still good?