HP StorageWorks 2/16V HP StorageWorks Fabric OS 5.2.x administrator guide (569 - Page 201

A metaSAN with interfabric links, The backbone and Edge Fabric 1

Page 201 highlights

fabric to another-over the backbone or edge fabric through this virtual domain-without merging the two fabrics. Translate phantom domains are sometimes referred to as "translate domains," or "xlate domains." If a B-Series MP Router blade is attached to an edge fabric using an EX_Port, it will create translate phantom domains in the fabric corresponding to the imported edge fabrics with active LSANs defined. If you import devices into the backbone fabric, then a translate phantom domain is created in the backbone device (in addition to the one in the edge fabric). If you lose connectivity to the edge fabric due to link failures or the IFL being disabled (for example, by issuing the portDisable command from the switch in the attached fabric) translate phantom domains remain visible. This prevents unnecessary fabric disruptions caused by translate phantom domains repeatedly going offline and online due to corresponding IFL failures. To remove the translate phantom domain in the backbone, disable all EX_Ports or VEX_Ports through which the translate phantom domain was created. Figure 8 shows a metaSAN with a backbone consisting of one 400 MP Router connecting hosts in Edge Fabric 1 and 3 with storage in Edge Fabric 2 and the backbone through the use of LSANs. A device is shared between: • The backbone and Edge Fabric 1 • Edge Fabric 1 and Edge Fabric 2 • Edge Fabric 2 and Edge Fabric 3 Figure 9 shows a metaSAN consisting of three edge fabrics connected through a 4/256 SAN Director containing an B-Series MP Router blade with interfabric links. Figure 9 A metaSAN with interfabric links Host Target Target Edge fabric 1 E_Port Edge fabric 2 E_Port Edge fabric 3 E_Port Fibre Channel switch IFL IFL EX_Ports Long Distance IFL Fibre Channel switch 4/256 SAN Director with B-Series MP Router blade 25313a Fabric OS 5.2.x administrator guide 201

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Fabric OS 5.2.x administrator guide
201
fabric to another—over the backbone or edge fabric through this virtual domain—without merging the
two fabrics. Translate phantom domains are sometimes referred to as “translate domains,” or “xlate
domains.” If a B-Series MP Router blade is attached to an edge fabric using an EX_Port, it will create
translate phantom domains in the fabric corresponding to the imported edge fabrics with active LSANs
defined. If you import devices into the backbone fabric, then a translate phantom domain is created in
the backbone device (in addition to the one in the edge fabric).
If you lose connectivity to the edge fabric due to link failures or the IFL being disabled (for example, by
issuing the
portDisable
command from the switch in the attached fabric) translate phantom domains
remain visible. This prevents unnecessary fabric disruptions caused by translate phantom domains
repeatedly going offline and online due to corresponding IFL failures. To remove the translate phantom
domain in the backbone, disable all EX_Ports or VEX_Ports through which the translate phantom
domain was created.
Figure 8
shows a metaSAN with a backbone consisting of one 400 MP Router connecting hosts in
Edge Fabric 1 and 3 with storage in Edge Fabric 2 and the backbone through the use of LSANs. A
device is shared between:
The backbone and Edge Fabric 1
Edge Fabric 1 and Edge Fabric 2
Edge Fabric 2 and Edge Fabric 3
Figure 9
shows a metaSAN consisting of three edge fabrics connected through a 4/256 SAN Director
containing an B-Series MP Router blade with interfabric links.
Figure 9
A metaSAN with interfabric links
Edge
fabric 2
Host
Target
Target
Edge
fabric 1
Edge
fabric 3
Fibre
Channel
switch
Fibre
Channel
switch
E_Port
E_Port
E_Port
EX_Ports
IFL
IFL
Long Distance IFL
4/256 SAN Director with
B-Series MP Router blade
25313a