Rorke Data Galaxy HDX2 GHDX2-2430S-24F4D - Manual (Page 77)

Galaxy GHDX2-2430S/R-24F4D Installation and Hardware Reference Manual
4-10 Subsystem Connection and Operation
on two controllers.
If host ports are hubbed together, all four “Channel 1” host ports on
bother controllers share a 4Gb/s bandwidth.
Figure 4-5: Channel Bus Connection and Cascaded Subsystems
o Usage: The onboard hub applies when an additional RAID enclosure
is needed and when you run short of the available switch
ports, HBA ports, or installation space.