Intel® Storage Server System JBOD2312S3SP Hardware Guide
10
On the back side of each backplane, there are several connectors, each of which is identified in the following
illustration.
Figure 12. Components on 3.5” HSBP
Label
Description
A
4-port mini-SAS HD SFF8643 connectors
B
Power connectors
C
SMBus connector (not used)
A
– 4-port Mini-SAS HD SFF8643 Connectors – The backplane includes two or three multi-port mini-SAS
cable connectors, each providing SGPIO and I/O signals for four SAS/SATA hard drives on the backplane.
Cables can be routed from matching connectors on the Expander card. Each mini-SAS HD connector
includes a silk-screen identifying which drives the connector supports: Drives 0-3, Drives 4-7, and Drives 8-
11.
B
– Power Harness Connector – The backplane includes a 2x2 connector supplying power to the backplane.
Power is routed to the backplane via a power cable harness from the power distribution board (PDB).
3.2.1
Cypress* CY8C22545 Enclosure Management Controller
The backplanes support enclosure management using a Cypress* CY8C22545 Programmable System-on-
Chip (PSoC*) device. The CY8C22545 drives the hard drive activity/fault LED, hard drive present signal, and
controls hard drive power-up during system power-on.
Summary of Contents for JBOD2312S3SP
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