Dell SC8000, Deployment Manual

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Chapter 4 Connect the Front End
98 Storage Center SC8000 Controller Deployment Guide
See Also
Fibre Channel Zoning on page 102
Example Virtual Port Mode Configuration
The following figure shows a dual ‐ controller Storage Center in virtual port mode
connected to a Fibre Channel server with a single fault domain. All ports belong to a single
fault domain because they are connected to the same FC switch.
Figure 88. Virtual Ports Example with FC
The following table summarizes the failover behaviors for this configuration.
Multipathing If multiple active paths are available to a server, the server must be
configured for MPIO to use more than one path simultaneously.
iSCSI networks • NAT must be disabled for iSCSI replication traffic.
• CHAP authentication must be disabled.
Fibre Channel fabrics • The FC topology must be switched fabric. Point ‐ to ‐ point and arbitrated
loop topologies are not supported.
• FC switches must be zoned to meet the virtual port mode zoning
requirements.
• FC switches must support N_Port ID Virtualization (NPIV).
• Persistent FCID must be disabled on FC switches.
Note: AIX servers are not supported.
Note: To use both primary paths simultaneously, the server must be configured to
use MPIO.
Scenario Failover Behavior
Normal operating conditions All ports are active and pass IO.
Controller A fails Virtual ports on controller A fail over by moving to physical ports
on controller B.
Controller B fails Virtual ports on controller B fail over by moving to physical ports on
controller A.
A single port fails The virtual port associated with the failed physical port moves to
another physical port in the fault domain.
Requirement Description
FC Switch
Server
Controller A Controller B
Active Ports