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Serial Attached SCSI

Serial Attached SCSI

The industry is gearing up for Serial Attached SCSI (SAS), a new, faster version of SCSI designed to meet the demands of enterprise IT for the coming decade. The SAS interface supports both SAS disk drives for mission critical applications and Serial ATA (SATA) drives for low-cost bulk storage of reference data, giving IT managers greater price and performance flexibility in their storage strategies. As a result, managers can now make storage decisions that better align with business requirements, balancing their storage investment between compatible technologies and assigning storage devices to data based on the information's business value, providing a more cost-effective solution. (By Enterprise Management Associates, November 2004)

Serial Attached SCSI Cables and Connectors

Serial Attached SCSI Cables and Connectors

In the process of defining and standardizing the Serial Attached SCSI technology, the T10 technical and SFF committees have defined cables and connectors to support the many different SAS-based system topologies that can now be developed. These cables and connectors are available today from many suppliers. Additional connectors are also in development that will provide higher I/O density. This white paper summarizes these solutions and provides direction for the connectivity implementation of SAS-based systems. (February 2005)

SAS Raid-On-A-Motherboard: Affordable, high performance RAID

Full-featured RAID data protection is becoming a standard feature in businesses of almost any size, thanks to the increasing affordability of implementing RAID technology. Cost-effective RAID-on-motherboard (ROMB) solutions, using integrated RAID-on-Chip (RoC) devices, enable system integrators to implement robust hardware RAID solutions while optimizing their server motherboard investments. With the union of high-security, cost-effective ROMB and the built-in reliability and availability features included with SAS, system IT managers can now meet the data security requirements of tomorrow on the restrictive budgets of today. (April 2005)

Managing Access Control Through SAS Zoning

Managing Access Control Through SAS Zoning

Serial Attached SCSI (SAS) is gaining popularity in small storage area network (SAN) server environments. With its rise in popularity comes the need to segregate and manage device traffic in a similar fashion to what is already done in larger Fibre Channel networks by using zones or in Ethernet using virtual LANs. By doing this, IT administrators can create much more flexible, scalable, and efficient server networks that meet their business needs. SAS zoning, a proposal to the T10 Technical Committee for inclusion in the SAS-2 specification, provides this capability. (September 2005)

SOptimizing Storage with SAS: Seize the 15K Advantage

Enterprise storage is entering a new era of cost-effectiveness and efficiency, driven by the growing movement towards specialized storage solutions. The value proposition of this application-focused storage is straightforward: Optimize price/performance by matching the storage device to the specific characteristics (quantity, needed availability, etc.) of the data. Naturally, such an approach requires multiple device types, each cost-effectively performing its respective storage duties. (April 2006)

SAS Steps In

SAS Steps In

Over the past several years, companies have enjoyed a wide selection of technologies within the enterprise disk array market. Serial ATA (SATA), Fibre Channel (FC), and even parallel SCSI are viable options. More recently, Serial Attached SCSI (SAS) has entered the mainstream enterprise-class storage market, and its share is growing rapidly. Gartner Dataquest expects SAS to grow from its current 8 percent market share in multi-user drive shipments to 16 percent in 2007. By 2009, analysts expect SAS to make up 45 percent of that market. (March 2007)

SAS Starter Kit: Mixing SAS and SATA Drives in a Single Enclosure

Serial Attached SCSI (SAS) has begun to play a key role as the enterprise continues to move towards more optimized, cost-effective storage platforms. Overcoming many of the limitations of traditional parallel SCSI implementations, SAS solutions that offer connectivity choices and support both SAS and Serial ATA (SATA) drive technology enable enterprises to easily create tiered storage environments. However, concerns about performance expectations and Rotational Vibration Interference (RVI) in mixed SAS/SATA environments are preventing many organizations from adopting SAS technology. (March 2007)

Optimizie Your Investment with Serial Attached SCSI (SAS)

Since the emergence of Serial Attached SCSI two years ago, many high-end storage solution providers and OEMs have recognized the advantages of SAS over its parallel predecessor. Vertical markets that have since adopted SAS technology are the entertainment industry, medical imaging, financial institutions and research and government institutions, which typically need performance and/or capacity. SAS can offer good value, performance, and scalability. (October 2007)