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Table 13-1
(Cont.) Running the Subnet Manager in Different Rack Configurations
Rack Configuration
Three or more Exalogic machines
Half- or full-rack Exalogic machine connected to a
half- or full-rack Exadata machine.
Run the SM in Configurations with Varying
See also:
Switch Firmware
Versions.
Quarter-rack Exalogic machine connected to a
quarter-rack Exadata machine.
See also:
Run the SM in Configurations with Varying
Switch Firmware
Versions.
Two or more Exalogic machines connected to two or
more Exadata machines.
See also:
Run the SM in Configurations with Varying
Switch Firmware
Versions.
13.2.2.1 Run the SM in Configurations with Varying Switch Firmware Versions
In a multirack configuration consisting of both Exalogic and Exadata machines, if
firmware upgrades result in switches with varying firmware versions across the
configuration, the SM should run on only the switches with the latest firmware
version. This is necessary to benefit from the features of the latest firmware.
Note that the SM should run on at least two switches in the fabric.
Consider a configuration that consists of three or more spine switches—for example,
two Exalogic machines connected to two Exadata machines—but with varying
firmware versions.
•
If two or more of the available spine switches, across the configuration, have the
highest firmware version, the SM should run on those spine switches, with the
priority set to 8.
•
If only one of the spine switches in the entire configuration has the highest
firmware version:
–
The SM should run on that spine switch. The SM priority should be set to 8.
–
In addition, the SM should run on one or more leaf switches having the latest
firmware version. The SM priority of the leaf switches should be set to 5.
In this case, running the SM on one or more leaf switches, besides running it on
the spine switch, is necessary to fulfill the requirement that at least two SMs
should be running in the fabric.
For more information about running the subnet manager, see the following topics:
•
Start the Subnet Manager Manually
•
Identify the Location of Master Subnet Manager
•
Relocate the Master Subnet Manager
Manage InfiniBand Network Using Subnet Manager
SM Should Run
On...
Spine switches
Spine switches
All leaf switches All leaf switches: 5
Spine switches
Manage the InfiniBand Network Using Subnet Manager 13-3
SM Priority
Spine switch: 8
Spine switch: 8
Spine switch: 8
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