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This one-day seminar gives a high-level introduction to Serial Attached SCSI (SAS). You will learn about the market forces that are driving the demand for storage. Market Trends and current position of all the storage technologies will be discussed, along with examples of how SAS will be positioned in the SOHO, SMB, and Enterprise markets. You will receive an understanding of different attachment methodologies like DAS, NAS, SAN, iSCSI, FCIP, and iFCP. This course in not intended to drill down into the depths of the SAS technology, it was created to give you a high-level non-technical overview of what will drive SAS in the marketplace and how it basically works.
Once you have been introduced to the market, what drives it, and how SAS will be positioned, it is time to visit the technology behind SAS. We will first start with a SCSI review that will update you on what parallel SCSI was and what SAS inherits. You will learn about the SCSI architectural model, initiators, targets, and logical units, and how SAS compares to Ultra-320. You will learn how SAS will be the obvious predecessor to parallel SCSI.
Once we have traveled down memory lane, it is time to get in touch with the SAS architecture. This section will introduce you to every SAS architectural layer and provide you with an understanding of what SAS means to product development. You will learn what can be reused from SCSI and what will need to be created to make SAS work. Topics will include: SAS Domain and Architecture, devices, topologies, physical interfaces, encoding and serial links, addressing, and how devices move information. Once that is done you will be exposed to all the layers of the SAS Architecture starting with the Application Layer where you will learn about SCSI and the Management Application, to the Transport Layer where you will learn how the
transprot protocol works, and completing with the Physical Layer where you will learn what the connectors look like.
Introduction to Storage Networking
Storage Industry Overview
• Market Forces
• The SAS Advantage
Storage Networking or SAN
• Storage Networking Paradigm
• The Trend Toward SANs
• SAN Installation Evangelism
• Fibre Channel Roadmap
• SAS Development Rational
• Technology Hype Cycle
• Market Segments Beyond 2003
Interface Positioning and Applications
• Market Positioning
• Market Segmentation
o SOHO SAN Design
o SMB SAN Design
o Enterprise SAN Design
Introduction to Technology
Storage Attachment Methodologies
• DAS, NAS, & SAN
• IP Storage
o FCIP, ISCSI, & iFCP
So What is the Good News for SAS
SCSI Overview
Introduction and Importance
Introduction to SCSI
o SCSI Command Language
o Importance of SCSI Language
SCSI Distributed Model
o Client-server model
o Introduction to Ladder diagrams
o SCSI Terminology
SCSI Structural Model
o Initiator Device
o Target Device
o Logical Unit
o SCSI Tasks
o Task Attributes
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Ultra-320 and SAS Comparison
Standards and SAS
SCSI Protocol Model
o Protocol Stack Comparison
o SAS Protocol Stack
o What happens when you access a file?
Transport Protocols
Serial ATA
Standards SAS Overview
Introduction and Importance
What is Serial Attached SCSI
SAS Domain
The SAS Architecture
SAS devices
o SAS Protocols
o Initiator, Target, & Expander devices
Topologies
• Basic SAS Topology
• Edge expander device sets
• Fanout expanders
SAS Service Delivery Subsystem
• Physical Interface
• Ports and Devices
• Addressing
• Encoding
• Primitives
• Frame Transmission
• Out of Band Signaling
• SAS Resets
• Device identification
• Connections
o Closing connections
• SAS Protocols
o SSP, SMP, & STP
Pathways
Pathway Characteristics
SAS Application Layer for SCSI
SCSI Standards
o SCSI Objects
o SCSI Commands changed for SAS
o Device Driver and Firmware Impact
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SCSI Addressing
CDB Characteristics
SCSI-3 Primary Commands
o Test Unit Ready & Read Command
SCSI Commands Changed for SAS
SAS Application Layer for Management
Management protocol services
Management application model
SMP functions
Discovery Process
SAS Transport Layer
SSP Transport Layer
o SSP Frame format
o SCSI Architectural model
o Frame types and information Units
o Command, Task, Data, Transfer Ready & Response
o Protocol Examples
STP Transport Layer
SMP Transport Layer
o SMP Frame Format
o SMP Protocol example
SAS Link Layer
Introduction and importance
o Primitives
o Identify and Open Address frame
o Resets
o Connections
SSP Link Layer
SMP Link Layer
STP Link Layer
SAS Phy Layer
Endcoding and decoding
OOB Signals
Speed Negotiation
SAS Physical Layer
SATA & SAS Cabling
SAS External & internal connectors
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| Who Should Attend: |
This seminar is targeted towards Departmental and Product managers and anyone with a need for a high-level understanding of Serial Attached SCSI storage devices and systems, from a market and technology perspective. |
| Prerequisites: |
Should be familiar with computing and storage concepts. |
| Course Length: |
1 day - This course is a prerequisite for In-Depth SAS |
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