1. It’s SCSI! SAS is built on field-proven SCSI technology and SCSI’s robust track record. This basis provides reliability and peace of mind that will satisfy users’ needs for continuity in the data center.
2. Ultimate Virtual SAN: With great performance, SAS can support business critical demands of a SAN and can typically consolidate up to eight physical servers directly. This "shared DAS" creates an environment similiar to a SAN, but without the complexity or cost.
3. SAS Switch Offers Consolidation Capabilities and the SAN-level: The recent introduction of the SAS switch, allows for storage systems to take the SAS consilidation capabilities a step further. The SAS switch enables a storage system to achieve the same consolidation benefits as a FC or IP SAN, all at lower acquisition and operational costs
4. Leverages SCSI Stack Technology: SAS was specifically designed to leverage the existing SCSI stack, which ensures the same long-standing reliability and robustness to which customers are accustomed. SAS eliminates the need for he system-level workarounds required to deploy a SCSI stack to accomplish the same result.
5. Assurance of Reliability: With enterprise class robustness and best-of-breed of development, a redundant SAS-based system provides the confidence it can support demanding 24/7 environments.
6. Availability/ Clustering: Used with an external SAS-based storage system, SAS controllers are well-suited for MSCS clusters where continuous application and data availability is critical.
7. Low TCO with a complete SAS configuration: SAS technology is designed to meet the key objective of keep its cost in line with SCSI. Available at an affordable price point, SAS is making headway as a low cost host interface.
8. Flexibility with SAS and SATA drive intermix support: SAS can cost-effectively support an organization’s complete range of data capacity requirements, with highly-used applications deploying SAS drives, and near-line applications using inexpensive capacity-optimized SAS drives. By accommodating a wide range of data requirements in a single enclosure, purchasing and storage utilization are simplified.
9. “Future-proof” storage: Aleady in it's second generation with 6 Gb/s performance, SAS offers a strong roadmap and provides investment protection with the assurance that future generations can support growth and increasing storage performance.
10. Scalability: SAS breaks through the 16-device limit that hampered SCSI’s scalability. SAS can support many more devices beyond this limitation, which allows storage systems the flexibility to scale when capacity growth necessitates it.
Action Item: SAS is the next step in the evolution of SCSI, offering increased performance, scalability and the ability to centralize the data of multiple servers. SAS is able to offer these benefits while maintaining a cost that is comparable to SCSI and leverages the SCSI stack and middleware – ensuring field-proven and long standing reliability. Administrators need to familiarize themselves with the capabilities of SAS and plan for its implementation in a variety of environments, which require performance, availability and the consolidated storage capabilities.
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