Lenovo ServeRAID M5120, User Manual

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ServeRAID M5120 SAS/SATA Controller User’s Guide 3-1
Chapter 3
ServeRAID M5120
SAS/SATA Controller
Characteristics
This chapter describes the characteristics of the ServeRAID M5120
SAS/SATA controller. It consists of the following sections:
•
Section 3.1, “ServeRAID M5120 SAS/SATA Controller Descriptions”
•
Section 3.2, “Characteristics of the ServeRAID M5120 SAS/SATA
Controller”
•
Section 3.3, “Technical Specifications”
3.1 ServeRAID M5120 SAS/SATA Controller Descriptions
The ServeRAID M5120 SAS/SATA controller is dual PHY, SAS
PCI Express controller and is used in systems with a PCI Express slot.
PCI Express goes beyond the PCI specification in that it is intended as
a unifying I/O architecture for various systems: desktops, workstations,
mobile, server,
communications, and embedded devices.
The ServeRAID M5120 controller has one LSISAS2208 ROC (RAID-on-
chip) processor that controls eight external SAS/SATA ports through two
SFF-8088 x4 external mini SAS connectors.
3.1.1 Board Layout and Connector Information
This subsection provides the board layout and connector information for
the controller. The following subsections provide graphics and connector
information for the controller.
The controller has eight external SAS/SATA connectors. The following
figure displays the connectors on the controller, which are described on
Table 3.1 .