Dear umaryaqub,
Have a good day.
All EXP expansion ports on a storage system can only connect to PRI expansion ports. Otherwise, services are interrupted.
Before connecting disk enclosures, read the following principles:
The controller enclosure and disk enclosures can be cascaded using 1 m and 3 m mini SAS HD electrical cables.
Disk enclosures can be cascaded using 1 m, 3 m, and 5 m mini SAS HD electrical cables or 15 m mini SAS HD optical cables.
Connect the expansion module on controller A to expansion module A on each disk enclosure and the expansion module on controller B to expansion module B on each disk enclosure.
All EXP expansion ports on a storage system can only connect to PRI expansion ports. Otherwise, services are interrupted.
If two or more disk enclosures are to be connected, connect them in multiple loops based on the number of expansion ports on the controller enclosure, and ensure that the disk enclosures are evenly distributed to each loop.
A maximum of eight standard SAS disk enclosures can be connected to one SAS port. Two is recommended.
When a storage system has more than eight 4 U disk enclosures, the disk enclosures must be installed in two adjacent cabinets. Links between controller enclosures and disk enclosures as well as links between disk enclosures must be connected forward.
When a storage system has more than eight 4 U disk enclosures, the disk enclosures must be installed in two adjacent cabinets. Links between controller enclosures and disk enclosures as well as links between disk enclosures must be connected forward.
Cables are connected in the same way no matter the controller enclosure is placed at the top or bottom inside the cabinet. In this section, the scenario where a storage system is configured with 16 disk enclosures, the controller enclosure is placed at the top inside the cabinet, and the expansion ports are mini SAS HD ports is used as an example to illustrate how to connect mini SAS HD cables.
Thanks.
