N + 1
The N + 1 menu only appears if the DS-System is licensed and configured for that formation.
The DS-System running in N+1 is a way for several DS-Systems to work together in order to provide backup and restore services to DS-Clients. The N+1 configuration is used for the following reasons:
- Performance - Load balancing across multiple DS-Systems
- Scalability - the ability to add additional hardware instead of replacing existing hardware
- Redundancy - in case a node in the N+1 configuration fails, the whole configuration will continue to function
In order for every node in the N+1 to provide backup and restore services in the same way for all clients, it requires the following shared resources:
The DS-System running in N+1 configuration requires an N+1 DS-System license that comes from a DS-License Server.
The DS-Clients have built-in load-balancing capability: a DS-Client can accept multiple DS-System IP addresses and will load-balance its activities between these DS-Systems. This means that the load of performing backup / restore / synchronization / ... is evenly distributed across available DS-Systems. (See: DS-User Guide - Edit the Settings for DS-System Access).
For more information, see the following Knowledge Base Articles:
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