Huawei OceanStor Dorado V3 Series Quick Installation Manual page 9

3c Connecting disk enclosures (Inapplicable to Dorado5000 V3 (NVMe) C00)
Connecting SAS disk enclosures to Dorado5000 V3 (SAS)
 A SAS port can only connect to one disk enclosure.
 Each expansion loop of disk enclosures must be connected to two adjacent ports (excluding ports P1 and P2)
of the 12 Gbit/s SAS interface module on a controller enclosure, for example, ports P0 and P1 or ports P2 and
P3.
 Port EXP0 and port EXP1 of each controller enclosure must be connected to port P0 and port P1 of disk
enclosure 0, instead of different disk enclosures.
 Port P0 and port P1 of the 12 Gbit/s SAS interface module of each controller enclosure must be connected to
port P0 and port P1 of disk enclosure 1, instead of different disk enclosures.
 Each controller connects to ports P0 and P1 of a disk enclosure via two cables. That is, each controller
enclosure connects to a disk enclosure via four cables.
Controller enclosure
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