Quantum StorNext QD7000 Hardware Manual page 66

The following table lists the redundant and non-redundant components in a direct-attached
configuration with one host and a controller shelf.
Component
Host/server
HBA, HCA, or iSCSI Ethernet adapter
Host-to-controller cable
Controller
The following figure shows an example of a direct-attach topology with two hosts and a duplex
controller shelf.
In this example, the hosts/servers must be clustered to guarantee redundancy.
Note:
Host/Server
HBA 1 HBA 2
Host
Port 1
Controller A
Host/Server
HBA 1
Host
Host
Port 1
Port 2
Controller A
Host/Server
HBA 1
Host
Host
Port 1
Port 2
Controller B
HBA 2
Host
Host
Port 1
Port 2
Controller B
74100
Redundancy
Non-redundant
Redundant
Redundant
Redundant
HBA 2
Host
Port 2
74101
Host cabling | 57