Sun Microsystems CP3000 manual SAS Controller, Flash, Module Management Controller MMC

2.2.3SAS Controller

The AMC.1-HDD SAS disk incorporates a PCIe-to-SAS host controller manufactured by LSI Corporation, device model LSI-SAS1064E. The controller provides host access to SAS and SATA disks. The controller features four lanes of PCI Express (2.5 gigabits per second each), and four lanes of SAS (3.0 gigabits per second each).

The SAS firmware for the LSI SAS supports the following:

■3 gigabits per second SAS and SATA transfers

■Device discovery

■Both 3.0 gigabit and 1.5 gigabit SATA devices

■x1 or x4 PCI Express bus

■Mixed SAS and SATA disk operation

■SATA tape drive

■SAS expander compatibility

2.2.4Flash

A flash device is preloaded with firmware that manages the protocols necessary to communicate with SAS and SATA target devices. The flash device contains BIOS and F-code to support boot from disk operations.

2.2.5Module Management Controller (MMC)

The IPMI subsystem provides management control for the board, based on an Atmel microcontroller. The MMC is the first system component to be brought up and must negotiate with the carrier board over IPMI before the card payload is enabled.

The MMC monitors board voltages and temperature, controls the hot-swap and failures status LEDs, controls e-Keying, and stores FRU information. For more information about the MMC and management functions, see Chapter 3.

The MMC provides an Intelligent Platform Management Interface (IPMI) that communicates with AdvancedTCA shelf managers. This MMC controls and monitors the following:

■Hot-swap communication with the shelf manager

■Inlet air temperature

■Voltage monitoring

2-4Sun Netra CP3000 Advanced Mezzanine Card PCIe Hard Drive and SAS Controller User’s Guide • March 2010