Having a control path that is separate from the data path increases reliability and simplifies troubleshooting.
Netapp sas cabling.
For disk shelves you insert a sas cable connector with the pull tab oriented down on the underside of the connector.
The sas cable connectors are keyed.
The alternate control path acp uses the acp ports on the disk shelves to connect to the storage controllers.
Sas optical multimode aoc cables with mini sas hd to mini sas hd connectors can be used for controller to stack and shelf to shelf connections and are available in lengths up to 50 meters.
However the information in this guide is specific to the unique characteristics of disk shelves with iom12 modules and.
Netapp disk shelf cabling examples.
If you are using sas optical multimode om4 breakout cables with mini sas hd to lc connectors for patch panels the following.
Qsfp to qsfp sas cables are used to connect disk shelves together and to connect disk shelves to the sas ports on the controller.
When oriented correctly into a sas port the connector clicks into place and if the disk shelf power is on at the time the disk shelf sas port lnk led illuminates green.
Two types of controllers and two types of disk shelves are used in these examples.
This page is dedicated to a few examples i ve put together in visio to highlight the correct sas and acp cabling combinations for netapp disk shelf cabling.