The system configuration interface provides configuration
settings and options that can be used with the Lenovo Storage V series clustered system.
These settings and options can have the following scope:
- System
- Logical unit (LU)
- The Lenovo Storage V series system attempts to follow preferred ownership that is specified
by the system. You can specify which controller (A or B) is used to
perform I/O operations to a given LU. If the Lenovo Storage V series system
can see the ports of the preferred controller and no error conditions
exist, the Lenovo Storage V series system
accesses that LU through one of the ports on that controller. Under
error conditions, the ownership is ignored.
- You must enable the following options on any LUs that are mapped
to the Lenovo Storage V series system:
- read caching
- write caching
- write cache mirroring
- You must not have caching without batteries that are enabled.