From Serial ATA Storage Architecture and Applications
The successful transition is the first and foremost concern for Serial ATA. If barriers to adopting the new specification are either economically or technically insurmountable, the specification fails its stated mission to replace parallel ATA. If the barriers to adoption are identified and addressed early in the development process, then the specification will accomplish its mission.
New industry specifications and related technologies all follow a familiar pattern of development, delivery, and (assuming success) mainstream use. This book applies specific terms to each stage.
Industry Interoperability Specification Development: The need is identified; a technical specification for interoperability is established.
Migration: Component-level products from multiple suppliers become available. New technologies often exist alongside older technologies.
Transition: These components are integrated into system-level products and displace older technologies in mainstream products.
Adoption: System-level products appear in homes and businesses.
This chapter focuses on transition, specifically the work required to integrate Serial ATA into desktop PCs, laptops, servers, and appliances.
Removing Barriers to Transition and Adoption
According to Everett Rogers, author of Diffusion of Innovations, the pace of adoption for new technologies is either gated or facilitated by five factors: relative advantage, compatibility, complexity, trialability, and observability. Learning lessons from previous storage interface specifications, we are presented with SCSI and Fibre Channel, two wonderfully contrasting case studies in specifications adoption.
The key question is: Why does SCSI dominate market share rather than FC? The answer lies in the top two items in Rogers list: relative advantage and compatibility. Historically, OEMs and IHVs...
Products & Services
Topics of Interest
Overview Job 1 for Serial ATA is to be a compelling replacement for parallel ATA. For a newcomer product to replace an incumbent product, the newcomer can t just be equal or just a little bit better.
To ease the transition and to provide compatibility with the broad installed base of existing software, the Serial ATA specification accommodates full software compatibility with existing Parallel ATA...
Although Serial ATA was developed so that you wouldn t need new software written specifically to support it, Serial ATA provides several-new capabilities that newly written software can utilize to get...
The Command layer protocol defines the sequences of Transport layer actions that are performed in order to execute ATA commands. Because the command protocol is defined in the existing ATA standards...
White Paper: Serial ATA Moves In December 2002 Vol.2 Issue 12 Page(s) 40-45 in print issue Add To My Personal Library White Paper: Serial ATA Moves In A Speedier Data Transfer Interface Arrives...