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