It’s important to have both off-site and onsite backup when planning backup and recovery strategies because organizations can’t afford to have a single point of failure. For example, if primary backup of production data is local and onsite, teams could lose access to both primary and backup copies in cases of a flood, hurricane, power failure, or other natural or manmade disaster. Following the 3-2-1 backup rule, however, means having another copy of data off-site that can be recovered even if the two onsite copies are unusable. Likewise, if teams depend only on off-site backup— either on-premises or in the cloud—they run some risks. Even off-site storage facilities are vulnerable to natural disasters wherever they are located. And for cloud storage, if a cyberattack succeeds in penetrating the cloud, organizations could lose data, unless they have another copy stored onsite. That’s another reason to follow the 3-2-1 backup rule (or one of its flavors).