Installing The Sas Hostraid Controller To A Sas Expander - Adaptec SCSI 58300 Installation And User Manual

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 expander connections, see
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 SAS HostRAID controller to the backplane.
Disk drives on
backplane
3
When all internal disk drives have been installed and connected, close your computer
cabinet, reconnect the power cord.

Installing the SAS HostRAID Controller to a SAS Expander

You can use a SAS expander to connect multiple disk drives to your SAS HostRAID controller
(or to multiple SAS HostRAID controllers). Commands can be sent down one link and data
returned on another in a separate connection to increase fault tolerance. Using a SAS expander
and dual-port SAS drives and SATA drives with 2-port adapters, you can design redundant
systems for maximum fault-tolerance.
To install the HostRAID controller to a SAS expander:
1
Using the appropriate cable, connect the SAS HostRAID controller to the expander's PHY
connector.
2
Connect a cable from the expander's PHY connector to a disk drive.
Internal SAS connector
External SAS
connector
Chapter 4: Installing the HostRAID Controller and Disk Drives
page 31.
Controller connected
to backplane with
fan-out cable
SAS fan-out cable
l 31