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Things to know - Cabling configurations for the E5512 and E5524 controller-drive trays

The figures in this section show representative cabling configurations. The configurations shown guarantee that redundant data paths exist between the controller-drive tray and all attached drive trays in a storage array. You can attach the E5512 and E5524 controller-drive trays to the following drive trays:

You can attach the controller-drive trays to various combinations of all three drive tray models.

You must ensure that both controllers have access to all available drive trays by making sure that:

Except for the ESMs connected directly to the controllers and the last ESMs in the stack, each ESM should have only a single connection to the ESM that follows it.

Note: The expansion connectors to the drive trays are always on the left side of the controllers from the rear view.
You use SAS cables to connect any expansion drive trays to the controller-drive tray. When you connect the cables, keep the following considerations in mind: