Example Virtual Port Mode Configuration
The following figure shows a Storage Center in virtual port mode that is connected to switches and
servers.
Figure 42. Virtual Port Mode Cabling Example
1.
Server 1
2.
Server 2
3.
FC switch 1
4.
FC switch 2
5.
Storage system
6.
Storage controller 1
7.
Storage controller 2
NOTE: To use multiple primary paths simultaneously, the server must be configured to use MPIO.
Legacy Mode
Legacy mode provides storage controller redundancy for a Storage Center by connecting multiple
primary and reserved ports to each Fibre Channel fabric.
In legacy mode, each primary port on a storage controller is paired with a corresponding reserved port
on the other storage controller. During normal conditions, the primary ports process I/O and the reserved
ports are in standby mode. If a storage controller fails, the primary ports fail over to the corresponding
reserved ports on the other storage controller. This approach ensures that servers connected to the
switch do not lose connectivity if one of the storage controllers fails. For optimal performance, the
primary ports should be evenly distributed across both storage controllers.
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Connect the Front-End Cabling
