LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered
pursuant a General Services Administration “GSA” contract, use, reproduction,
or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925
ii
Preface
This book contains installation instructions and specifications for the
ServeRAID-M1115 SAS/SATA Controller.
For details on how to configure the storage controller, refer to the
ServeRAID-M Software User’s Guide. For information about the
operating system drivers, refer to the ServeRAID-M Device Driver Installation User’s Guide.
Organization
This document has the following chapters and appendices:
•Chapter 1, Overview, provides a general overview of the ServeRAID
This document explains how to install the ServeRAID-M device driver for
your operating system. The information in this document is independent
of the back-end bus and applies to the ServeRAID-M controllers.
ServeRAID-M Software User’s Guide
This document explains how to use the storage configuration utilities to
configure, monitor, and maintain your ServeRAID-M controller and the
storage-related devices connected to the controllers.
Safety Information
This document contains translated caution and danger statements. Each
caution and danger statement that appears in the documentation has a
number that you can use to lo cate the corresponding statement in your
language in the Safety Information document.
ivPreface
Safety
Prefacev
viPreface
Prefacevii
Safety Statements
viiiPreface
Prefaceix
Protecting against Electrostatic Discharge – Static electricity can
harm delicate components inside your computer. To prevent static
damage, discharge static electricity from your body before you touch any
of your computer ’s electronic components, such as the microprocessor.
You can do so by touching an unpainted met al surface , such as the metal
around the card-slot openings at the back of the computer.
As you continue to work inside the computer, periodically touch an
unpainted metal surface to remove any static charge your body may
have accumulated. In addition to the preceding precautions, you can also
take the following steps to prevent damage from electros tatic discharge:
•When unpacking a static-sensitive component from its shipping
carton, do not remove the component from the antistatic packing
material until you are ready to install the component in your
computer. Just before unwrapping the antistatic packaging, be sure
to discharge static electricity fro m your body.
•When transporting a sensitive component, first place it in an
antistatic container or packaging.
•Handle all sensitive components in a static-safe area. If possible, use
antistatic floor pads and workbench pads.
xPreface
Contents
Chapter 1 Overview
1.1Overview1-1
1.2Notices and Statements1-3
1.3ServeRAID M1115 SAS/SATA Controller Descriptions and
Limitations1-3
1.3.1Controller Limitations1-4
1.4Technical Description1-4
1.5Integrated MegaRAID Mode1-6
1.6Configuration Scenarios1-6
1.6.1Number of Physical Disks Supported1-8
1.7Benefits of the SAS Interface1-8
1.7.1PCI Express Architecture1-9
1.7.2Operating System Support1-9
1.8Benefits of the ServeRAID M111 5 Controller1-9
1.8.1SAS Features1-10
1.8.2SAS Array Limitations1-11
1.8.3SATA III Features1-12
1.8.4PCI Express Performanc e1-12
1.8.5Usability Features1-12
1.8.6Flexibility Features1-13
1.8.7Drive Roaming1-13
1.8.8Drive Migration1-14
1.8.9New Drives Attached to a ServeRAID Controller1-16
1.8.10Automatic Rebuilds on New Drives1-16
1.8.11System (JBOD) Drives1-16
1.9Hardware Specifications1-17
1.10Technic al Support1-18
ServeRAID M1115 SAS/SATA Controller User ’s Guidexi
3.2Characteristics of the ServeRAID M1115 S AS/SATA Controller
3-3
3.3Technical Specifications3-3
3.3.1Controller Specifications3-4
3.3.2Array Performance Features3-5
3.3.3Fault Tolerance3-5
3.3.4Power Supply Requirements for the ServeRAID M1115
SAS/SATA Controller3-6
3.3.5Operating and Non-oper ating Conditions3-6
3.3.6Safety Characteristics3-7
Appendix A Getting Help and Technical Assistance
A.1Before you callA-2
A.2U sing the documentationA-3
A.3Getting help and information from the World Wide WebA-3
A.4Software service and supportA-4
A.5Hardware service and supportA-4
A.6Taiwan product serviceA-5
3.6Power Supply for the ServeRAID M1115 SAS/SATA Controller
3-6
Contentsxvii
Chapter 1 Overview
This chapter provides a general overview of the ServeRAID M1115
SAS/SATA controller, which has RAID control capabilities. It consists of
the following sections:
•Section 1.8, “Benefits of the ServeRAID M1115 Controller”
•Section 1.9, “Hardware Specifications”
•Section 1.10, “Technical Support”
1.1Overview
The ServeRAID M1115 Serial Attached SCSI (SAS)/Serial ATA (SATA)
controller is a high-performance intelligent PCI Express-to-SAS/SATA
controller with RAID control capabilities. This controller provides
reliability, high performance, and fault-tolerant disk subsystem
management.
The ServeRAID-M1115 controller is a versatile controller that provides
the backbone of both server and high-end workstation environments. It
is an ideal RAID solution for the storage of workgroup, department al, and
ServeRAID M1115 SAS/SATA Controller User ’s Guide1-1
enterprise systems, and offers a cost-effective way to implement RAID in
a server.
SAS technology brings a wealth of options and flexibility with the use of
SAS devices and SATA devices within the same storage infrastructure.
However, SAS devices and SATA devices bring individual characteristics
that make each one a more suitable choice depending on your storage
needs. MegaRAID gives you the flexibility to combine these two similar
technologies on the same controller and within the same enclosure.
Note:
The ServeRAID-M1115 controller is based on the MegaRAID
first-to-market SAS IC technology and proven technology. As a
second-generation PCI Express controller, it addresses the growing
demand for increased data throughput and scalability requirements
across midrange and enterprise-class server platforms. Lenovo offers a
family of SAS controllers to address the needs for both internal solutions
and external solutions.The controller supports the SAS protocol as
described in the Serial Attached SCSI Standard, version 3.0.
In addition, the controller suppor ts the Serial ATA II (SATA II) and SATA
III protocols. The SATA III protocol is defined by the Serial ATA Revision
3.0, and the Serial ATA III; Extension to the Serial ATA Specification,
Version 2.0. SATA III is an extension to SATA 2.0.
Each port on the controller supports SAS devices and/or SATA devices
using the following:
You cannot mix SAS drives and SATA drives within the
same virtual disk(s).
•SAS Serial SCSI Protocol (SSP), which enables communication with
other SAS devices
•SATA, which enables communication with other SATA devices
•Serial Management Protocol (SMP), which communicates topology
management information directly with an attached SAS expander
device
•Serial Tunneling Protocol (STP), which enables communication with
a SATA device through an attached expander
1-2Overview
1.2Notices and Statements
1.3ServeRAID M1115 SAS/SATA Controller Descriptions
and Limitations
The ServeRAID M1115 SAS/SATA controller is a PCI-Express 2.0, halfsize, half-height RAID controller based on the LSISAS2008 PCI ExpressSAS/SATA I/O Processor chip. The ServeRAID M1115 SAS/SATA
Notices and Statements1-3
controller controls eight internal 6-Gb/s SAS/SATA ports through two
internal x4 mini SAS 4i (SFF-8087) connectors. The controller is
available with eight PHYs.
1.3.1Controller Limitations
The ServeRAID M1115 SAS/SATA controller has the following limitations:
•You can connect only one device per SAS PHY unless you use an
expander
•You can use a maximum cable length of six feet (using shorter
cables is preferred)
•Cables have to meet the SAS specification
•You cannot mix SAS drives and SATA drives in the same virtual disk
•You cannot mix SAS or SATA Solid State Drives (SSDs) and legacy
mechanical drives (SAS or SATA) in the same virtual disk
•You cannot mix Solid State SAS drives and Solid State SATA drives
in the same virtual disk
•See Section 3.3.4, “Power Supply Requirements for the ServeRAID
M1115 SAS/SATA Controller,” for information about the power
requirements, and Section 3.3.5, “Operating and Non-operating
Conditions” for information about the minimum and the maximum
temperature ranges
1.4Technical Description
The ServeRAID-M1115 controller brings 6.0 Gb/s Serial Attached SCSI
and 6.0 Gb/s Serial ATA performance to host controller, workstation, and
server designs. The controller supports internal storage devices, which
allows you to use a system that supports enterprise-class SAS drives,
and desktop-class SATA drives. The controller can connect to drives
directly. Simplified cabling between devices is an additional benefit.
The controller is based on the LSISAS2008 ROC device. This device is
compliant with the Fusion-MPT architecture and provides a PCI Express
x8 interface.
1-4Overview
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