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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.
■
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-cooled or ceiling-cooled environment.
■
Disk chains can span two adjacent cabinets if the adjoining cable length is sufficient.
However, disk chains cannot span more than two cabinets.
■
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.
■
The maximum number of disk shelves supported by each disk chain is six.
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Connect each disk chain to two HBAs if available.
■
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
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