Avago Technologies LSI53C1020 - Manual (Page 18)

1-4 Introduction
Version 2.4 Copyright © 2001–2004 by LSI Logic Corporation. All rights reserved.
Figure 1.2 Typical LSI53C1020 System Application
The LSI53C1020 supports the Integrated RAID™ solution. The
Integrated RAID solution provides cost benefits for the server or
workstation market where the extra performance, storage capacity,
and/or redundancy of a RAID configuration are required. The two
components of the Integrated RAID solution are:
•
Integrated Mirroring™ (IM), which provides features of RAID 1 and
RAID 1E. The Integrated Mirroring feature provides physical
mirroring of the boot volume through LSI53C1020 firmware. This
feature provides extra reliability for the system’s boot volume without
burdening the host CPU. The runtime mirroring of the boot drive is
transparent to the BIOS, drivers, and operating system.
• Integrated Striping™ (IS), which provides features of RAID 0. The
IS feature writes data across multiple disks instead of onto one disk.
This is accomplished by partitioning each disk’s storage space into
Fixed Disk, Optical Disk,
Printer, Tape, and Other
SCSI Peripherals
PCI Graphic Accelerator
PCI Fast Ethernet
Memory
Controller
Memory
PCI-X Bus
Interface
Controller
Central
Processing
Unit
(CPU)
Processor Bus
PCI-X Bus
LSI53C1020 PCI-X
to Ultra320 SCSI
SCSI Bus
LSI53C1020