SAS Interface

Interface Technology


Seagate leads the industry in tailoring hard drive solutions for easy integration into a wide array of desktop, notebook, consumer electronics and network storage systems. Configured to perform at optimal levels for multiple environments, Seagate products are the fastest and most reliable drives to interface with any device or system—portable handheld device, car, laptop, personal computer or network storage system.
Serial ATA (SATA)
The Serial ATA (SATA) interface was designed to replaced parallel ATA in desktop, notebook, consumer electronics and network storage systems. SATA allows you to move more data in less time, which results in increase performance and flexibility. Native Command Queuing, a key feature of SATA, makes it possible to sort and prioritize several commands at the same time and reduce mechanical wear and tear within the drive. Other features such as hot plug, staggered spin-up and a fast transfer rate of 3Gb/s per second make SATA a perfect choice for servers, workstations, desktops, consumer electronics and laptop PCs.
Go to the SATA Interfaces page to learn more about SATA.
Serial Attached SCSI (SAS)
The Serial Attached SCSI (SAS) interface combines the manageability and reliability of SCSI with increased performance and scalability. SAS helps keep enterprise storage solutions economical and allows for fast growth of data volumes.
Go to the SAS Interfaces page to learn more about SAS.
Parallel ATA (PATA / Ultra ATA)
Parallel ATA stands for Parallel Advanced Technology Attachment. It has been the hard disc drive interface for desktop PCs for over 15 years. The Parallel ATA interface can be found in desktop PCs, Notebook, Consumer Electronics, and in some servers today.
Go to the PATA Interfaces page to learn more about PATA.
Fibre Channel
The Fibre Channel interface is a secure and flexible platform. It is the easiest and most reliable solution for information storage and retrieval.
Go to the Fibre Channel Interfaces page to learn more about Fibre Channel.



Serial Attached SCSI (SAS) Hard Drive Interfaces




SCSI Inflection Point: The New Era of Serial Attached SCSI (184 KB, PDF)
Even the best of technologies eventually find themselves supplanted by newer, more advanced solutions. Parallel SCSI has been the bedrock of enterprise storage for more than two decades, but recently the limitations of its parallel, shared-bus architecture have become problematic. In this article, the fourth in a monthly series of technology papers Seagate plans to publish, you will learn why Serial Attached SCSI is ideally suited to expand the role of SCSI in the enterprise.

By melding serial performance and scalability with existing SCSI environments, SAS adds new freedom to storage solutions while maintaining the long-standing foundation on which enterprise storage was built.
Accelerates storage performance compared to Parallel SCSI
Ensures data integrity
Preserves IT investments
Enables system design flexibility with SATA drives in a single enclosure
Boasting features that liberate SCSI from its parallel predecessor, Serial Attached SCSI (SAS) delivers new levels of breakthrough speed and connectivity while retaining the functionality and reliability that has made SCSI the premier enterprise storage I/O standard for over two decades.