IBM MegaRAID 8480 manual MegaRAID Battery Backup Unit User’s Guide on the

two similar technologies on the same controller and within the same enclosure.

Note: You cannot mix SAS and SATA drives within the same virtual disk(s).

The MegaRAID 8480 Storage Adapter is based on the LSI first-to-market SAS IC technology and proven MegaRAID technology. As the second-generation PCI Express storage adapter, the MegaRAID 8480 controller addresses the growing demand for increased data throughput and scalability requirements across midrange and enterprise-class server platforms. LSI offers a family of MegaRAID SAS adapters addressing the needs for both internal and external solutions.

The innovative LSI intelligent Transportable Battery Backup Unit 2 (LSIiTBBU02) is pre-installed on the MegaRAID 8480 RAID Controller. The LSIiTBBU02 provides cached data protection, which allows system builders to protect cached data even during the most catastrophic system failures.

Note: You must charge the battery before use. Refer to the

MegaRAID Battery Backup Unit User’s Guide on the

MegaRAID 8480 CD for more information.

The MegaRAID 8480 RAID controller supports the ANSI Serial Attached SCSI standard, version 1.1. In addition, the controller supports the SATA

IIprotocol defined by the Serial ATA specification, version 1.0a. Supporting both the SAS and SATA II interfaces, the controller is a versatile controller that provides the backbone of both server and high- end workstation environments.

Each port on the MegaRAID 8480 RAID controller supports SAS and/or SATA II devices using the following:

•SAS Serial SCSI Protocol (SSP), which enables communication with other SAS devices

•SATA II, which enables communication with other SATA II devices

•Serial Management Protocol (SMP), which communicates topology management information directly with an attached SAS expander device

•Serial Tunneling Protocol (STP), which enables communication with a SATA II device through an attached expander

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