Your key IT infrastructure components, such as e-mail or business critical application servers, should be located in a secure environment with:
If you don't have adequate space or the budget to host this type of robust environment on-site, storing your equipment in an off-site location is imperative to business continuity.
Instead of making considerable upfront investment and maintaining a robust infrastructure, you can lease a Virtual Server Instance in an Off-Site Data Center for a flat monthly cost.