Brocade Fabric OS Administrator's Guide Supporting Fabric OS v6.3.0 (53-1001336-02, November 2009)

474 Fabric OS Administrator’s Guide
53-1001336-02
Fibre Channel routing concepts
21
NOTE
Backbone fabrics that share connections to the same edge fabrics must have unique
backbone fabric IDs.
• MetaSAN
A metaSAN is the collection of all SANs interconnected with Fibre Channel routers.
A simple metaSAN can be constructed using an FC router to connect two or more separate
fabrics. Additional FC routers can be used to increase the available bandwidth between fabrics
and to provide redundancy.
Figure 73 shows a metaSAN consisting of a host in Edge SAN 1 connected to storage in Edge
SAN 2 through a backbone fabric connecting two FC routers.
FIGURE 73 Edge SANs connected through a backbone fabric
• Phantom domains
A phantom domain is a domain emulated by the Fibre Channel router. The FC router can
emulate two types of phantom domains: front phantom domains and translate phantom
domains. For detailed information about phantom domains, see “Phantom domains” on
page 476.
= LSAN
Edge SAN 2Edge SAN 1
Backbone
fabric
FC router FC router
E_Port
E_Port
IFL IFL
EX_Port
EX_Port
ISL