Seagate ST3300007LC SAS and SATA: Multiple Benefits of Unified Storage (334K, - Page 4

SAS and SATA: Multiple Benefits of Unified Storage and connectors that consume less enclosure space, enhancing airflow/cooling in high-density computing solutions such as 1U servers. Going Green With SAS (Part 2) Recently joining the green revolution is an innovative family of 3.5-inch 10K-RPM enterprise drives, specifically designed for enormous capacity and greater energy efficiency. Leveraged from the same platform as 3.5-inch 15K-RPM SAS drives, these new 10K-RPM SAS drives deliver best-in-class capacity, energy savings and performance compared to conventional 3.5-inch 10K-RPM enterprise drives. Perpendicular recording technology enables these high-efficiency hard drives to provide 33 percent more capacity per drive (up to 400 GB), the highest drive capacity available for missioncritical network storage environments. Coupled with a best-in-class 34 percent reduction of power at idle (power consumption is rated as low as eight watts) and a 33 percent cut in operating power compared to standard 10K-RPM drives, these hard drives help energy-constrained data centers maximize efficiency. What's more, these new high-efficiency enterprise SAS drives deliver higher IOPS performance than conventional 3.5-inch 10K-RPM SAS drives. Boasting a seek time of only 3.9 ms, random performance is increased by 10 percent while sequential performance is improved by as much as 23 percent. Speed, Capacity or Efficiency: Pick Three Speed The real-world advantages of SFF SAS/SATA storage solutions are compelling: A 1U server using six 2.5-inch 15K-RPM SAS drives delivers full RAID 5 functionality in one-half the space required by a 2U server equipped with six 3.5inch 15K-RPM drives-and the SFF-equipped 1U server boasts faster performance. Capacity SAS/SATA compatibility enables a SAS server to periodically migrate data off its SFF 15K-RPM SAS drives onto high-capacity 3.5-inch SATA drives, freeing up more capacity for online/ transactional applications. For example, servers and storage subsystems of varying sizes (1U, 2U, 4U, and so forth) stacked on top of one another in a single cabinet can transfer data interchangeably between SAS and SATA drives. When extraordinary SATA capacity is required, a 1U server's external SAS port can always be connected to a RAID- or JBOD-configured enclosure carrying a multitude of 3.5-inch SATA drives that can store many terabytes of data. Efficiency The new breed of high-efficiency 3.5-inch 10K-RPM SAS drives delivers up to 33 percent more capacity at 400 gigabytes coupled with a 33 percent reduction in power and cooling requirements. In the data center, this greater capacity and reduced cooling profile translates into the lowest total cost of ownership (TCO) for a wide range of mission-critical enterprise network storage applications. Conclusion Greater storage efficiency continues to be an urgent priority for companies of every size, and SAS is uniquely positioned to facilitate this key goal. SAS was proactively engineered as a superset of SATA, and this rational approach pays multiple dividends. Not only does SAS infrastructure (via its compatibility with SATA hard drives) enable IT managers to select the most cost-effective storage solution for any task, it also vastly improves SATA's scalability. Simply put, SAS compatibility with SATA establishes a lofty new standard for storage value by eliminating the redundancies and inefficiencies of purchasing and maintaining separate infrastructures for high-performance (SAS) and high-capacity (SATA) storage applications. And now the availability of SFF 15K-RPM SAS drives and higher-capacity, lower-power 3.5-inch 10K-RPM SAS hard drives boosts the SAS/SATA value proposition even higher by leading the migration to more space- and energy-efficient storage solutions. AMERICAS ASIA / PACIFIC EUROPE, MIDDLE EAST AND AFRICA Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066, United States, 831-438-6550 Seagate Technology International Ltd. 7000 Ang Mo Kio Avenue 5, Singapore 569877, 65-6485-3888 Seagate Technology SAS 130-136, rue de Silly, 92773, Boulogne-Billancourt Cedex, France 33 1-4186 10 00 Copyright © 2007 Seagate Technology LLC. All rights reserved. Printed in USA. Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. All other trademarks or registered trademarks are the property of their respective owners. One gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. Seagate reserves the right to change, without notice, product offerings or specifications. Publication Number: TP581.1-0709US, September 2007