Dell PowerVault MD3000 - Manual (Page 9)

Hardware Installation
9
Single SAS In-Port Configurations
Figure 2-1 through Figure 2-5 show supported nonredundant and redundant
cabling configurations to MD3000 RAID controller modules with a single
SAS In port connector. Each diagram shows the maximum number of
optional expansion enclosures attached.
Figure 2-1 through Figure 2-3 show one and two hosts, each connected to
only one RAID controller module that is subsequently expanded to two more
storage enclosures. The hosts can share storage space but without redundant
paths, if one path were to fail, the server on that path would be disconnected
from the storage array.
Figure 2-1. Cabling One Host With Nonredundant Data Paths
single-HBA host server
RAID controller module 0
RAID controller module 1
MD3000 RAID Enclosure
MD1000 Expansion Enclosure
MD1000 Expansion Enclosure