Fabric Manager Users Guide, Version 6.1, Revision A - QLogic

2–Advanced Fabric Manager Capabilities
Multiple QLogic Fabric Manager Instances per Management Host
Table 2-2. Manager Instances
InfiniBand Manager
Acronym
Baseboard Manager
Fabric Executive
Performance Manager
Subnet Manager
BM
FE
PM
SM
NOTE:
A host can be connected to as many subnets as the number of ports the
Host Channel Adapters contain. If a host contains one 4x Host Channel
Adapter and both Ports are connected to different subnets, the host can run
a maximum of two BM, PM, FE and SM instances, if adequate memory is
available.
Subnet Configuration Example
InfiniBand managers can run on various hosts. It is suggested that one or two
QLogic Fabric Manager hosts be dedicated per Subnet for InfiniBand
management. The remaining hosts can be used to run applications.
NOTE:
Running systems management and application software on hosts that are
dedicated to Subnet management is discouraged.
The following table shows an example subnet in which hosts A and B share
subnet management responsibilities; host A runs the primary Subnet Manager
while host B is the standby. A Fabric Executive is active on both hosts while the
Baseboard Manager is assigned to only one host.
Table 2-3. Subnet Configuration Example
Host BM FE PM SM
A 0 1 1 1
B 1 1 1 1
C,D,... 0 0 0 0
2-34 IB0054608-01 B