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Chapter 5: Installing the HostRAID Controller and Disk Drives ● 26
Connecting to a System Backplane
In a backplane connection, disk drives and SAS cards are attached to and communicate with
each other through a system backplane.
The number of disk drives is limited to the number of slots available on the backplane. Some
backplanes have embedded SAS expanders and can support up to 128 end devices. (For more
information about backplane and expander connections, see page 27.)
1 Connect one or more internal SAS or SATA disk drives to the backplane. (Refer to your
system’s documentation for more information.)
2 Use an internal SAS cable to connect the controller to the backplane.
3 When all internal disk drives have been installed and connected, close your computer
cabinet, reattach the power cord, then continue with Installing the Controller to a SAS
Expander on page 27.
Disk drives on
backplane
Controller connected
to backplane with
fan-out cable