HP StorageWorks 2/16V HP StorageWorks Fabric OS 5.3.x administrator guide (569 - Page 227

Edge SANs connected through a backbone fabric, Proxy devices

Page 227 highlights

Figure 11 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 11 Edge SANs connected through a backbone fabric 4/256 SAN Director ISL with B-Series MP Router blade EX_Port 4/256 SAN Director with B-Series MP Router blade EX_Port E_Port Backbone Fabric IFL Edge SAN 1 IFL Edge SAN 2 E_Port = LSAN Proxy devices 25314a 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. Figure 12 illustrates this concept. Host Proxy host (imported device) Proxy target (imported device) Fabric 1 EX_Port Target E_Port IFL Fabric 2 E_Port IFL 400 MP Router Figure 12 metaSAN with imported devices 25315a Fabric OS 5.3.0 administrator guide 229

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Fabric OS 5.3.0 administrator guide
229
Figure 11
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 11
Edge SANs connected through a backbone fabric
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.
Figure 12
illustrates this concept.
Figure 12
metaSAN with imported devices
= LSAN
Edge SAN 2
Edge SAN 1
Backbone
Fabric
4/256 SAN Director
with B-Series
MP Router blade
4/256 SAN Director
with B-Series
MP Router blade
E_Port
E_Port
IFL
IFL
EX_Port
EX_Port
ISL
25314a
Fabric 2
Target
Proxy host
(imported device)
Proxy target
(imported device)
Host
Fabric 1
400 MP
Router
E_Port
E_Port
IFL
IFL
EX_Port
25315a