Dell Compellent Series 40 Setup Guide download pdf (Page 57)

About Virtual Ports

Storage Center 5.0 introduced the Virtual Ports feature that enables a Storage Center to

dramatically expand the number of available Front End ports. In contrast to the Primary/

Reserved physical front end port designations, Virtual Ports allow all Front End ports to be

used as Primary thereby eliminating the need for Reserved ports. All ports within a network

or fabric are Primary and can read and write IO. If a physical port fails, any Virtual Port in

the fabric can take over for the failed port.

Legacy Mode

In Legacy Mode, Fault Domains associate Primary and Reserved Front End ports to one

another. The Primary and Reserved ports designate the port to which traffic is moved in the

event of a failover or revert. Figure 45 illustrates four legacy port fault domains. Each fault

domain requires a Primary (P) and Reserved (R) port. Reserved ports do not carry data

unless a Primary port fails — thus only half the ports are used.

Figure 45. Primary and Reserved Ports in Legacy Mode

Note It is important to split Primary 1 and Primary 2 between two cards for ease of

conversion.

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Dell Compellent Series 40 Setup Guide Page 57