3c
Connecting enclosures
15
Connect disk enclosures according to the following rules:
SAS expansion cables must be naturally bent, and a minimum of 97 mm (3.82 inches) clearance must be
reserved in front of each enclosure for winding cables.
All the EXP ports on the storage system can connect only to the PRI ports. An incorrect connection will cause
a service interruption.
The number of disk enclosures connected to the expansion ports on the controller enclosure cannot exceed
the upper limit.
Connect the expansion interface module of controller A to expansion module A of a disk enclosure, and
connect the expansion interface module of controller B to expansion module B of a disk enclosure.
For a storage system with two or more disk enclosures, set up multiple loops and evenly allocate those disk
enclosures to the loops.
All disk enclosures in the same loop are connected by two independent links. To be more specific, the
forward and backward connection mode is used for optimal network reliability.
Scenario 1
Connecting disk enclosures
Disk
enclosure 2
Disk
enclosure 1
Controller enclosure
Controller A
Controller B
Expansion
module A
Expansion
module B
2 U controller enclosure connected to two disk enclosures
