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Cabinet Configuration Guidelines
This section contains guidelines for properly placing and connecting the disk shelves.
Cabinet Configuration
For safety reasons, mount the heaviest equipment, typically disk shelves, at the bottom
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of the cabinet. Refer to the appropriate Oracle Safety and Compliance Guide for rack-
mounting guidelines.
To best prepare for cabling controllers to disk shelves, now and in the future, mount
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controllers in the middle of the cabinet. This also allows for optimal air circulation, whether
in a floor- or ceiling-cooled environment.
Do not remove cabinet panels to run cables between cabinets.
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Load Distribution
Balance the number of disk shelves across the disk chains in your system.
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Balance the number of disk chains across the number of HBAs in your system. For
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example, attaching two chains to two separate HBAs will have better performance than
attaching two chains to a single HBA.
Do not mix disks with different capacities or rotation speeds within a single disk shelf.
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To maximize performance, use the maximum number of disk chains supported by the
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controller's SAS HBAs. For example, four SAS HBAs with eight chains and eight disk
Cabinet Configuration Guidelines
Installation Prerequisites and Hardware Overviews
19
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