IBM MegaRAID 8480 manual SAS Features, SATA II Features

•Two external connectors

•Support for RAID levels 0, 1, 5, 10, and 50

•Advanced array configuration and management utilities

•Online RAID level migration

•Drive migration

•Drive roaming

•Patrol Read

•No reboot necessary after expansion

•More than 200 Qtags per array

•User-specified rebuild rate

•32 Kbyte nonvolatile random access memory (NVRAM) for storing RAID system configuration information; the MegaRAID SAS firmware is stored in flash ROM for easy upgrade.

1.6.1SAS Features

The following list describes the SAS features:

•Provides eight fully independent PHYs

•Supports 3.0 Gbit/s SAS data transfers per PHY

•Supports SSP to enable communication with other SAS devices

•Supports SMP to communicate topology management information

•Provides a serial, point-to-point, enterprise-level storage interface

•Simplifies cabling between devices

•Provides a scalable interface that supports up to 128 devices through multiple expanders

•Supports wide ports consisting of 2, 3, or 4 PHYs within a single quad port

•Supports narrow ports consisting of a single PHY

•Transfers data using SCSI information units

1.6.2SATA II Features

The following list describes the SATA II features:

Summary of MegaRAID 8480 RAID Controller Characteristics 1-9

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