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Hardware User's Guide

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2 Intel® RAID Controller RS2VB080/RS2VB040 Hardware User’s Guide
inhibit airflow. The point-to-point SATA architecture eliminates difficulties created by the
legacy ATA master-slave architecture while maintaining compatibility with existing ATA
firmware.
Intel
®
RAID Controller RS2VB080/RS2VB040
The Intel
®
RAID Controller RS2VB080/RS2VB040 is an intelligent, low-profile RAID
adapter with an integrated LSI SAS2108 RAID-On-Chip chipset, providing both a SAS
controller and RAID engine. With 512-MB RAM built onto a memory board which is
connected to the RAID baseboard by default, and eight (for RS2VB080) or 4 (for
RS2VB040) independent ports supporting 6Gb/s and 3Gb/s SAS data transfers using two
(for RS2VB080) or one (for RS2VB040) SFF-8087 mini multi-lane connectors, this
controller supports up to 32 enterprise-class SAS or SATA devices and 64 virtual drives.
The PCI Express* connector fits into an x8 or x16 PCI Express* slot capable of
performance up to 5 Gb/s per lane.
The SAS RAID controllers support the SAS protocol as described in the Serial Attached
SCSI Standard, Version 2.0. The controllers also support the Serial ATA II (SATA II)
protocol defined by the Serial ATA Specification, Version 1.0a and the Serial ATA II:
Extension to the Serial ATA Specification, Version 1.1. SATA II is an extension to SATA
1.0a.
In addition, the SAS RAID controllers support the following SATA II features:
• 3Gb/s SATA II
• Staggered spin-up
• Hot plug
• Native command queuing
• Activity and fault indicators for each PHY
• Port selector (for dual-port drives)
Protocol Support
Each port on the SAS controllers supports SAS devices, SATA II devices, or both using
SSP, SMP, STP, and SATA II as follows:
• Serial SCSI Protocol (SSP) to enable communication with other SAS devices.
• SATA II Protocol to enable communication with other SATA II devices.
• Serial Management Protocol (SMP) to share topology management information
with expanders.
• Serial Tunneling Protocol (STP) support for SATA II through expander interfaces.