H3C Technologies H3C S10500 Series Switches - Manual (Page 13)

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Figure 1 FC SAN networking
NOTE:
•
An FC SAN refers to a network that includes FC switches and nodes.
• A fabric refers to a transmission network that includes FC switches.
FC protocol
The servers, FC switches, and disk devices in an FC SAN must all support FC.
Basic concepts
WWN
The world wide name (WWN) is a 64-bit address. It identifies a fabric or an entity (such as an FC switch,
node, or port) in an FC SAN. The upper-layer protocol of FC uses WWNs for communication. Each entity
has a factory-assigned, globally unique WWN.
FC address
The FC protocol accesses communication entities in an FC SAN through FC addresses. An FC address
is also known as an "FC ID."
Disk Server
1) Point-to-point
connection
2) Arbitrated loop
Disk Server
Fabric
Disk
Server
FC switch
3) Switched fabric
Server
Disk Disk