Lenovo ServeRAID M1115, User Manual, Page: 43 / 69

ServeRAID M1115 SAS/SATA Controller User’s Guide 3-1
Chapter 3 ServeRAID
M1115 SAS/SATA Con-
troller Characteristics
This chapter describes the characteristics of the ServeRAID M1115
SAS/SATA controller. It consists of the following sections:
•
Section 3.1, “ServeRAID M1115 SAS/SATA Controller Descriptions”
•
Section 3.2, “Characteristics of the ServeRAID M1115 SAS/SATA
Controller”
•
Section 3.3, “Technical Specifications”
3.1 ServeRAID M1115 SAS/SATA Controller Descriptions
The ServeRAID M1115 SAS/SATA controller is dual PHY, SAS
PCI Express controllers 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 M1115 controller has one LSISAS2008 ROC (RAID-on
chip) processor that controls eight internal SAS/SATA ports through two
internal x4 mini-SAS 4i (SFF-8087) 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 internal SAS/SATA connectors. The following
figure displays the connectors on the controller, which are described on
Table 3.1 .