Edge Sans Connected Through A Backbone Fabric; Metasan With Imported Devices; Proxy Devices - HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual

Figure 1 1 shows another metaSAN consisting of a host in Edge SAN 1 connecting to storage in Edge SAN
2 through a backbone fabric connecting two 4/256 SAN Directors, each containing B-Series MP Router
blades.
Figure 1 1

Edge SANs connected through a backbone fabric

4/256 SAN Director
with B-Series
MP Router blade
EX_Port
E_Port
= LSAN

Proxy devices

A 400 MP Router or 4/256 SAN Director with an B-Series MP Router blade achieves interfabric device
connectivity by creating proxy devices (hosts and targets) in attached fabrics that represent real devices in
other fabrics. For example, a host in Fabric 1 can communicate with a target in Fabric 2 as follows:
• A proxy target in Fabric 1 represents the real target in Fabric 2.
• Likewise, a proxy host in Fabric 2 represents the real host in Fabric 1.
The host discovers and sends Fibre Channel frames to the proxy target. The 400 MP Router or 4/256 SAN
Director with an B-Series MP Router blade receives these frames, translates them appropriately, then
delivers them to the de
The target responds by sending frames to the proxy host. Hosts and targets are exported from the edge
SAN to which they are attached and, correspondingly, imported into the edge SAN reached through Fibre
Channel routing.
Host
Fabric 1
EX_Port
Figure 12

metaSAN with imported devices

ISL
Backbone
Fabric
IFL
Edge SAN 1
Figure 12 illustrates this concept.
Proxy host
(imported device)
Proxy target
(imported device)
Target
E_Port
IFL
IFL
400 MP
Router
4/256 SAN Director
with B-Series
MP Router blade
EX_Port
IFL
E_Port
Edge SAN 2
25314a
Fabric 2
E_Port
25315a
Fabric OS 5.3.0 administrator guide 229