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20 Sun StorEdge 3000 Family Best Practices Manual • October 2003
Full-Fabric SAN Tips and Techniques
■ In the fabric SAN configuration, the switches communicate with the Sun StorEdge
3510 FC array host ports using a fabric point-to-point (F_port) mode. This enables
transparent controller fail-over and fail-back without server-resident software.
However, supporting hot-swap servicing of a failed controller requires the use of
multipathing software, such as the Sun StorEdge Traffic Manager, on the
connected servers.
■ Use of fabric point-to-point (F_port) connections between a Sun StorEdge 3510 FC
array and fabric switches limits to 128 the total number of LUNs that can be
presented. Fibre channel standards allow only one ID per port when operating
point-to-point protocols, resulting in a maximum of four IDs, with a maximum of
32 LUNs each, supporting up to 128 LUNs.
Full-Fabric SAN Setup Details
The following example applies to a dual-controller array in a point-to-point
configuration.
Host Adapters per
server
Dual-port 2-Gbit FC Dual-port 2-Gbit FC Dual-port 2-Gbit FC
Traffic Manager Required Required Required
Storage Switches Two 8-port 2-Gbit
FC fabric switches
Two 16-port 2-Gbit
FC fabric switches
Two 32-port 2-Gbit
FC fabric switches
TABLE 5 Configuration Overview for a Full-Fabric SAN (Continued)