If you carry out SQL Server backups using product 'x' then you need to make sure that

• You can get hold of the installation disks for product 'x'?
• Does product 'x' have a backup copy to protect against damage of the primary copy?
• You know how to install it?
• You know how to configure it?
• Do you know your current configuration?

If you have some amazing backup procedure can you get hold of the physical backups.

Early on in my career we had a major fire and we were not allowed near the area where the backups were held.  The fire brigade told us that the best place for a fire proof safe was near an outside wall.

It is stating the obvious but fire proof safes should not be put in storage cupboards where flamable materials are kept.  Keeping them in rooms that are also used for paper storage, or worst still, cleaning materials is simply asking for trouble.