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Increasing storage availability - Reverse Cabling

In order to provide higher availability, the controller enclosure is connected to the drive enclosure via reverse cabling. The connection of the primary path is implemented in ascending order while the secondary path is connected in descending order, as shown in the following figure.

Reverse Cabling


  • Drive enclosure access is ensured even when a DE failure occurs.
  • Availability for data transfer paths between controllers and drives is better than older models.

Product requirement

Supported Storages All-Flash Arrays ETERNUS AF650 S2/AF650
Hybrid Storage Systems ETERNUS DX100 S4/S3, DX200 S4/S3
ETERNUS DX500 S4/S3, DX600 S4/S3
ETERNUS DX8700 S3, DX8900 S4/S3