> it's probably cheaper to buy a new 4 TB hard drive every month
The reason for blurays might be that he's following rule 2 of the 3-2-1 Backup Strategy. 3 backups, 2 different types of storage media, 1 copy off-site.
If your house is hit by lightning it could wipe all your magnetic and solid state drives, but optical discs would probably be ok.
The reason for blurays might be that he's following rule 2 of the 3-2-1 Backup Strategy. 3 backups, 2 different types of storage media, 1 copy off-site.
If your house is hit by lightning it could wipe all your magnetic and solid state drives, but optical discs would probably be ok.