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Atrato Design for Three Year Zero Maintenance Many storage RAID (redundant array of inexpensive disks) systems employ data replication or error correction coding to support automatic recovery of data when disk drives fail; but most still require drive maintenance. Given the cost of stocking replacement disk drives and operator monitoring, Atrato Inc. has researched the concept of building spare capacity into a SAID (self-maintaining array of identical disks) for fully automatic fail-in-place recovery requiring no monitoring and minimizing data loss exposure. This article provides an overview of the Atrato system’s unique approach to eliminate drive tending and minimize risk of data loss for a three-year operational lifetime. March 2008 |
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Disk Array Actuator Density Since 1990, disk array enclosures have changed very little. This paper compares the benefits and challenges involved with the development of high-density packaging, signaling, and management of hundreds of 2.5-inch small form factor disk drives and makes comparisons to the traditional disk arrays previously mentioned. The resulting analysis details a high-density storage array with much finer tuning, sparing, and I/O granularity, extremely high aggregate bandwidth (on the order of several gigabytes per second), impressive transaction rates (on the order of tens of thousands of random I/O operations per second from the disk media), very low average wait times in disk queues, low average response time, and exceptionally low power consumption. February 2008 |
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The Atrato Velocity1000 Storage Solution Consumers obviously want movies to quickly appear in their homes at convenient times. Video On Demand (VOD) has become a staple of the premium television programming service set. In order to deliver to customers’ expectations, VOD must continue to evolve so that it may provide a continuously increasing level of service. The Atrato Velocity1000 (V1000) storage solution provides the scalability required to accommodate even the largest VOD system. February 2008 |
