Companies who require high levels of availability need a reliable disaster recovery strategy. For many organisations, that usually means adhering to the 3-2-1 backup rule, where the 1 refers to keeping 1 backup copy offsite. Traditionally, that copy is stored in a dedicated, company-owned and/or managed disaster recovery infrastructure. Lately, however, businesses have started turning to cloud-based disaster recovery solutions. This article explains why that strategy is better.
What is the 3-2-1 backup rule?
The 3-2-1 backup rule is a highly recommended backup strategy that says you must:
- Possess at least 3 copies of your data;
- Store copies on two different kinds of storage media; and
- Keep one of those copies offsite.