Connecting Directly To The Hostraid Controller; Connecting To A Backplane - Adaptec RAID 1220SA Installation And User Manual

You have these connection options:

Connecting Directly to the HostRAID Controller

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Connecting to a Backplane on page
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Connecting Directly to the HostRAID Controller
In a direct-attach connection, SAS or SATA disk drives are connected directly to a SAS
HostRAID controller with SAS cables. The number of direct-attached disk drives is limited to
four per internal SAS connector. For more information, see
61.
1
Install your internal SAS or SATA disk drives, following the instructions in your system's
documentation.
2
Use internal SAS cables to connect the disk drives to the SAS HostRAID controller.
SATA disk drives attached to
controller with fan-out cable
External
SAS cable
3
When you have installed all disk drives and connected the to SAS HostRAID controller,
close your computer cabinet, and reconnect the power cord.

Connecting to a Backplane

In a backplane connection, disk drives and SAS HostRAID controllers are connected to, and
communicate with each other through a 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 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.
Chapter 4: Installing the HostRAID Controller and Disk Drives
(see below).
31.
External SAS connector
page 32.
Direct-Attach Connections on page
l 31