Adaptec 2170200 User Guide - Page 31
Connecting Directly to the HostRAID Controller, Connecting to a Backplane, Direct-Attach Connections
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Chapter 4: Installing the HostRAID Controller and Disk Drives l 31 You have these connection options: ● Connecting Directly to the HostRAID Controller (see below). ● Connecting to a Backplane on page 31. 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 Direct-Attach Connections on page 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 External SAS connector 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 page 32. 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.