Integrated Mirroring Solution; Integrated Striping Solution - LSI LSI20320 User Manual

2.7.1 Integrated Mirroring Solution

2.7.2 Integrated Striping Solution

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By simplifying the IM and IS options and by providing firmware support
in its host adapters, LSI can offer the Integrated RAID solution at a lower
cost than a dedicated processor based RAID implementation.
The Fusion-MPT Common Information Model (CIM) interface software
continuously monitors IM volumes and IS volumes, and reports status
and error conditions as they arise.
IM and IS are supported by different versions of the Fusion-MPT
firmware. Therefore, either IM or IS can be implemented on a system
with a Fusion-MPT firmware based host adapter, but IM and IS cannot
be used concurrently on the same system.
The Fusion-MPT BIOS Configuration Utility (CU) configures the IM or IS
volume, which can use from two to six disk drives. The BIOS and drivers
support SCSI Domain Validation. Host-based CIM software monitors the
state of the physical disks and reports error conditions as they arise.
As a result of the shift toward Network Attached Storage (NAS), ISPs
need a cost-effective, fault-tolerant solution to protect the operating
systems on small form factor, high-density, rack-mountable servers. The
IM solution provides data protection for the system boot volume to
safeguard critical information such as the OS on servers and high
performance workstations. This new Integrated Mirroring solution gives
customers a robust, high-performance, fault-tolerant solution that is less
expensive than a dedicated RAID controller.
The IS solution is targeted at applications that require the faster
performance and increased storage capacity of striping. The IS solution
is a low-cost solution with many of the features of a more expensive
RAID striping solution. A single IS logical drive may be configured as the
boot disk or as a data disk.
To set up the Integrated RAID (IM and IS) features, refer to the Integrated
RAID User's Guide.
Detailed Host Adapter Installation
Version 2.3 Copyright © 2002–2004, 2006 by LSI Logic Corporation. All rights reserved.