LSISAS1068 LSI, LSISAS1068 Datasheet - Page 18

• Manufacturer Part Number: LSISAS1068
• Manufacturer: LSI

Specifications of LSISAS1068

• Lead Free Status / RoHS Status: Not Compliant

The LSISAS1068 employs an ARM966 processor to meet the data
transfer flexibility requirements of the host interface PCI-X specifications.
The LSISAS1068 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 LSISAS1068 supports a 32-bit external memory bus. The external
memory controller block provides an interface for flash ROM, NVSRAM,
and PBSRAM devices. Most configurations use a flash ROM to store
firmware, configuration information, and persistent data information.
The LSISAS1068 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
(IM) technology and Integrated Striping
(IS)
technology. IM provides physical mirroring of two physical drives. IM
requires an NVSRAM to support write journaling. IS 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 LSISAS1068 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.
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Introduction
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