LSI SATA 150 1.1.1Enclosure Management, 1.1.2Patrol Read, 1.1.3SMART Technology

management capabilities. The SATA 150-6 supports RAID 0, 1, 5, 10, and 50.

•The MegaRAID SATA 150-4 intelligent RAID controller and storage adapter uses two Silicon Image SiI3112A chips to support four Serial ATA ports. The Intel 80302 processor provides the intelligent RAID management capabilities. The SATA 150-4 supports RAID 0, 1, 5, and 10.

•The MegaRAID SATA 150-2 RAID controller and storage adapter uses a Silicon Image SiI3112A chip to support two Serial ATA ports. The SATA 150-2 supports RAID 0 and 1.

1.1.1Enclosure Management

The SATA 150-4 and SATA 150-6 controllers support enclosure management through the same protocols used for SCSI Accessed Fault- Tolerant Enclosures (SAF-TE), using an I2C interface to communicate with the storage enclosure processor. This feature allows you to use RAID capabilities provided by the SATA 150 adapters in an enclosure containing your hard drives.

1.1.2Patrol Read

The Patrol Read operation reviews your system for possible physical disk errors that could lead to physical disk failure, and then carries out actions to correct the errors. The goal is to protect data integrity by detecting physical disk failure before the failure can damage data. The corrective actions depend on the disk array configuration and type of errors.

Note: Patrol Read is a background operation and is designed to minimize the impact on I/O performance.

1.1.3SMART Technology

The self-monitoring analysis and reporting technology (SMART) feature monitors the internal performance of all motors, heads, and physical disk electronics to detect predictable physical disk failures. This feature helps monitor physical disk performance and reliability, and protects the data on the physical disk. When problems are detected on a physical disk, you can replace or repair the physical disk without losing any data.

1-2Introduction