Nytro MegaRAID Overview : SAS Technology

SAS Technology

The SAS technology lets you use the SAS devices, SATA II and SATA III devices, and the Nytro Flash module devices within the same storage infrastructure. Individual characteristics make each of these devices a more suitable choice, depending on your storage needs. The controller lets you combine these two similar technologies on the same controller, within the same enclosure and in the same Nytro Cache drive.

The controller is based on the LSI® first‑to‑market SAS IC technology and proven MegaRAID technology. As second‑generation PCI Express RAID controller, the controllers address the growing demand for increased data throughput and scalability requirements across midrange and enterprise-class server platforms. The controller addresses the requirements of both the internal and external solutions.

The controller support the ANSI Serial Attached SCSI standard, version 2.1. In addition, the card supports the SATA II and III protocols defined by the Serial ATA III specification. Supporting both the SAS and SATA II and SATA III interfaces, the controller supports both the server environments and high-end workstation environments.

Each port on the controller uses the following protocols to support SAS devices or STA III devices:

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SAS Serial SCSI protocol communicates with other SAS devices.

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SATA II and SATA III communicates with other SATA II and SATA III devices.

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Serial management protocol communicates the topology management information directly with an attached SAS expander device.

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Serial tunneling protocol communicates with a SATA II and SATA III device through an attached expander.