Dell PowerVault MD3800i Series Deployment Manual page 18

Mixed Environment
The following figure shows a mixed environment, that is direct attachment using SAS to one host
connectivity to another host using direct-attached iSCSI or the IP SAN.
Figure 9. Mixed Environment Cabling for Two RAID Controllers
NOTE: The SAS host ports in the PowerVault MD3800i and MD3820i storage arrays are
recommended to be connected to a secondary host or backup network.
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