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D-9
Appendix D: SAS-827B Backplane Specications
SAS Ports
The SAS-827B backplane is designed with four separate sectors, which support
from one to four motherboards indepentdently of each other. The SAS ports are
used to connect the SAS drive cables. The 12 ports are designated A0, A1, A2, B0,
B1, B2, C0, C1, C2 and D0, D1, D2. Each port is also compatible with SATA drives.
Use the table below to determine the SAS port to motherboard conguration that
is appropriate for your system.
SAS Port to Motherboard Congurations
Number of
Motherboards
SAS Port
Connectors
Connect to
Motherboard
Using 1 MB A0, A1, A2 MB-A
Using 2 MBs A0, A1, A2
B0, B1, B2
MB-A
MB-B
Using 3 MBs A0, A1, A2
B0, B1, B2
C0, C1, C2
MB-A
MB-B
MB-C
Using 4 MBs A0, A1, A2
B0, B1, B2
C0, C1, C2
D0, D1, D2
MB-A
MB-B
MB-C
MB-D
Figure D-6: Motherboard Locations In the Chassis