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The nature of instant clone VDI environments is to create pools of VMs that are not necessarily tied to a specific user. This ability reduces the administration of the environment and reduces the need for backups, disaster recovery, and data-loss mitigation.
This design also reduces the need for replication. Since data is typically not stored in the user VMs, the VMs do not need to be copied offsite. A VM pool can quickly be created offsite if the infrastructure is available, including the template VMs.