Data Domain DD9300 System Installation and Storage Expansion Guide

Connecting ES30 shelves

The cabling diagrams in this section show maximum configurations. Not all systems will have all the disk shelves shown in the diagrams.

Add shelf-to-shelf cables between shelves in a loop and to the controller as shown in the diagrams.

1. Cable from the B Controller EXPANSION port of the lower shelf to the B controller HOST port of the next higher shelf.
2. Then cable from the A Controller HOST port of lower shelf to the A controller EXPANSION port of the next higher shelf
3. There are no specific placement or cabling requirements for SSD shelves, or the metadata shelves for DD Cloud Tier configurations. These shelves can be installed and cabled the same way as standard ES30 shelves. SSD shelves and DD Cloud Tier metadata do not need to be cabled in a separate set from the other ES30 shelves.

For HA pairs, the primary and standby nodes use different cables to connect to ES30 shelves. The primary node uses cables for ES30 host ports (), and the standby node uses cables for ES30 expansion ports ().