Dell PowerVault MD3000 - Manual (Page 24)

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Cabling Your RAID Enclosure
Figure 2-3. Cabling a Two-Node Cluster (Single HBA, Nonredundant Data Paths from Each Node)
Figure 2-4 and Figure 2-5 show redundant, high-availability cabling configurations for one and two hosts.
If any one path fails, at least one HBA is still connected to one RAID controller.
Figure 2-4. Cabling a Single Host (Dual HBA with Two Cable Connections) Using Redundant Data Paths
single-HBA host server
single-HBA host server
RAID controller module 0
RAID controller module 1
MD3000 RAID Enclosure
MD1000 Expansion Enclosure
MD1000 Expansion Enclosure
RAID controller module 0
RAID controller module 1
MD3000 RAID Enclosure
MD1000 Expansion Enclosure
MD1000 Expansion Enclosure
dual-HBA host server