XProtect’s Live DB write algorithm is optimized for block storage. Therefore, the Live DB works best with the server’s internal DAS, or with external FC or iSCSI storage such as Unity or SC series arrays. Milestone enables video to be kept in the Live DB storage indefinitely.
Internal DAS storage is ideal for small implementations with a few servers. As an installation grows, the need to optimize storage for reliability, scalability, manageability, and rack space increases. In larger environments, and in virtualized server environments, Unity or SC series arrays in a SAN (FC or iSCSI) configuration are more practical for the Live DB.