Hardware User's Guide

14 Intel® RAID Controller RS2VB080/RS2VB040 Hardware User’s Guide

Technical Specifications

MegaRAID CacheVault™ Technology

LSI MegaRAID CacheVault

flash cache protec-tion uses NAND flash memory

This module eliminates the need for a lithium ion battery traditionally used to protect

DRAM cache memory on PCI RAID controllers. The RAID controller automatically

writes the data in cache to flash when a power failure occurs, while the super-capacitor

keeps the current going during the process. When the power comes back, the DRAM is

recovered from flash and the system goes on without loss of data. The benefits of this

technology are elimination of hardware maintenance associated with LiON batteries,

lower total cost of ownership over the life of the adapter, and more environmentally

friendly cache protection.

Intel

RAID Controller RS2VB080/RS2VB040 LEDs:

• One surface mounted GREEN system heartbeat LED (CRT3B1) to indicate that the

SAS2108 ROC ASIC is operating normally.

• One surface mounted RED system error LED (CRT3B2) to provide error

status signal.

JT10 Debug Connector 2-pin connector Reserved.

JT11 Keyed I

C Connector 3-pin keyed

connector

Out-of-band enclosure management (SES2).

JT12 Individual Drive Fault LED

header

8 x 2 header Indicates drive faults. There is one LED per port.

When lit, each LED indicates the corresponding

drive has failed or is in the Unconfigured-Bad state.

The LEDs function in a direct-attach configuration

(there are no SAS expanders). Direct attach is

defined as a maximum of one drive connected

directly to each port.

Note: This header is used for RAID controllers

with internal SAS ports only.

JT13 Universal Asynchronous

Receiver/Transmitter (UART)

4-pin connector For factory and debug use.

Jumper Description Type Comments