Tape backups for the most part are not very reliable at all. These tapes can be broken very easy, even the slightest bit of greece can damage them and make them all in a usable. Think about this, you've spent many hours amassing important information for your business enterprise only to find that it is lost due to a broken tape.
There are numerous more up-to-date ways of saving your invaluable data so don't always rely on your tape backup. Its not uncommon for your tape backups to record blank. If your primary method of saving info is a tape backup then it's important you make sure that the tape has actually been recording. There are many problems that can occur if your equipment is not properly cleaned. And if you have been doing consistent checkups then you might be in for a very nasty shock.
I suggest that if you are looking for a way to back up your information that you stay far away from using tape backups. There are more modern ways to save your information in these include, external disk drives, online backup or flash drives. With all of the umpteen ways to backup your precious data there is no reason at all that you should use any tape backup at all.
It is not very nice to find that your backup system have not actually saved all your files and folders, even though you religiously saved them for future use. And it wasn't my home computer that this happened with it was my business PC and it caused me to lose a lot of my time and way to much money. Even after keeping all the equipment clean you can never be sure that a tape backup will perform in the way that you were told it would.
It would be in the best interests of your business enterprise to use some sort of backup system like an external hard drive or some type of on-line backup system. These are much better answers then using a tape backup.
There is lots of data available about tape backup and the problems you could have, a simple search on one of the major search engines will show you that lots of other individuals have had the same problems.