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Mapping volumes to an ESXi server
22 Dell EMC SC Series: Best Practices with VMware vSphere | 2060-M-BP-V
Keep in mind that when a volume uses multiple paths, both the ESXi initiators are mapped from the same
controller, through different front-end ports. For example:
"LUN10-vm-storage" → Controller1/Port1 → FC-Switch-1 → Mapped to ESXi1/HBA1 as LUN 10
"LUN10-vm-storage" → Controller1/Port2 → FC-Switch-2 → Mapped to ESXi1/HBA2 as LUN 10
If a different volume is active on the second controller, it may be mapped such as:
"LUN20-vm-storage" → Controller2/Port1 → FC-Switch-1 → Mapped to ESXi1/HBA1 as LUN 20
"LUN20-vm-storage" → Controller2/Port2 → FC-Switch-2 → Mapped to ESXi1/HBA2 as LUN 20
When configuring multipathing, remember that a volume cannot be mapped to both controllers
simultaneously, because a volume can only be active on one controller at a time.
6.4 Multipathed SC Series volumes
When multipathing SC Series volumes, the process is automated. Selecting the correct operating system in
the server properties screen can prevent many of the common mapping errors. Based on the operating
system selected, SC Series correctly maps volumes by applying a set of rules to the server that are unique to
each operating system.
Server operating system selection