LSISAS1064 LSI, LSISAS1064 Datasheet - Page 18

• Manufacturer Part Number: LSISAS1064
• Manufacturer: LSI

Specifications of LSISAS1064

• Lead Free Status / RoHS Status: Not Compliant

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Benefits of SAS
The LSISAS1064 is based on the Fusion-MPT (Message Passing
Technology) architecture, which features a performance based message
passing protocol that off loads the host CPU by completely managing all
I/Os and minimizes system bus overhead by coalescing interrupts. The
Fusion-MPT architecture requires only a thin, easy to develop device
drivers that is independent of the I/O bus. LSI Logic provides these
device drivers.
The LSISAS1064 supports a 32-bit external memory bus. The external
memory controller block provides an interface for Flash ROM, NVSRAM,
and PSBRAM devices. Most configurations use a Flash ROM to store
firmware, configuration information, and persistent data information.
The LSISAS1064 supports the Integrated RAID solution, which is a
highly integrated, low cost RAID implementation. It is designed for
systems requiring redundancy and high availability, but not needing a full-
featured RAID implementation. The Integrated RAID solution includes
Integrated Mirroring
technology. IM technology provides physical mirroring of eight physical
drives. IM technology requires an NVSRAM to support write journaling.
IS technology enables data striping across up to eight physical drives.
The Integrated RAID solution is OS independent, easy to install and
configure, supports up to eight drives at RAID Level 0, and does not
require a special driver. The runtime operation of the Integrated RAID
solution is transparent to the operating system. A single firmware build
supports all Integrated RAID capabilities. The LSISAS1064 also provides
Zero Channel RAID (ZCR) support.
The IR firmware requires a configuration mechanism, which enables
configuration of the mirroring attributes during initial setup or
reconfiguration after hardware failures or changes in the system
environment. Use the LSI Logic BIOS Configuration Utility or the IM DOS
Configuration Utility to configure the IR firmware attributes. Host based
status software monitors the state of the mirrored drives and reports
error conditions as they arise.
SAS is a serial, point-to-point, enterprise-level device interface that
leverages the proven SCSI protocol set. SAS is a convergence of the
Introduction
Copyright © 2003–2005 by LSI Logic Corporation. All rights reserved.
™
(IM) technology and Integrated Striping
™
(IS)