This section explains high availability when using the storage used in the environment on which the NS appliance is deployed.
High Availability as a Resource
Physical L-Server redundancy
When server recovery is specified during creation of a physical L-Server for NS Appliance, if an error is detected on the server where the physical L-Server is deployed, it is possible to switch to its spare server for automatic switchover.
Server switchover when a chassis fails
If a chassis in a configuration where ROR CE manages multiple chassis fails, operations can be re-started by starting the physical L-Server on a chassis that operational.
Switchover of operating or standby status of storage
Realizes the switchover between operating and standby disks in configurations in which replication of the operating storage volume used by a physical L-Server to a standby storage volume is configured.
Redundant Storage and FC Path Configuration
After creation of a physical L-Server for NS Appliance, making the FC path configuration redundant enables multi-path configuration between the physical L-Server and storage. By enabling the multi-path configuration, it is possible to prevent an operation from stopping due to a path error during operation.
Redundancy Function of NS Appliance
This function is to take over operations without continuing L-Platform communications, by the process of a standby NS Appliance taking over from the operating NS Appliance, even if the operating NS Appliance goes down.
For details on the redundancy function of NS Appliance, refer to "1.2.6 High-availability Function".
See
For details on high availability of managed resources, refer to "Chapter 18 High Availability of Managed Resources" in the "Operation Guide CE".
Disaster Recovery
Physical L-Servers for NS Appliances are targets of Disaster Recovery.
For details, refer to "4.3 Disaster Recovery Operations".
