... shouldn't it be common practice to test your backup system to make sure that the restore procedure meets the requirements of the client (company, etc?)
The IT company that I work for creates a backup system based on the requirements of our clients and then demonstrates the whole backup and restore procedure to make sure that it falls in line with what our client actually wants. It's really not difficult to do. Sure, some of the restore procedures may be slower (depending on other requirements, such as cost,) but the client knows that will be the case and signs off on it.
The IT company that I work for creates a backup system based on the requirements of our clients and then demonstrates the whole backup and restore procedure to make sure that it falls in line with what our client actually wants. It's really not difficult to do. Sure, some of the restore procedures may be slower (depending on other requirements, such as cost,) but the client knows that will be the case and signs off on it.