A Metasan With Interfabric Links - HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual

Figure 59 shows a metaSAN consisting of three edge fabrics connected through an HP StorageWorks
DC SAN Backbone Director with interfabric links.
Edge
fabric 1
Fibre
Channel
switch
Figure 59

A metaSAN with interfabric links

• Logical SANs (LSANs)
An LSAN is defined by zones in two or more edge or backbone fabrics that contain the same devices.
You can create LSANs that span fabrics. These LSANs enable Fibre Channel zones to cross physical
SAN boundaries without merging the fabrics while maintaining the access controls of zones.
An LSAN device can be a physical device, meaning that it physically exists in the fabric, or it can be a
proxy device.
Figure 60 on page 370 shows a metaSAN with a backbone consisting of one FC router connecting
hosts in edge fabrics 1 and 3 with storage in edge fabric 2 and the backbone fabric through the use of
LSANs. Three LSAN zones allow device sharing between the backbone fabric and Edge Fabric 1,
between Edge Fabric 1 and Edge Fabric 2, and between Edge Fabric 2 and Edge Fabric 3.
Host
Edge
fabric 2
E_Port
E_Port
IFL
EX_Ports
FC router
Target
Edge
fabric 3
E_Port
IFL
Long distance IFL
Fabric OS 6.2 administrator guide 369
Target
Fibre
Channel
switch