Asus LSI SAS3442X-R - Manual (Page 19)

IM/IME Description 2-3
Version 1.1 Copyright © 2006, 2007 by LSI Logic Corporation. All rights reserved.
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Fusion-MPT architecture.
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Easy-to-use BIOS-based configuration utility.
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Error notification: the drivers update an OS-specific event log.
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SES status LED support.
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Write journaling, which allows automatic synchronization of
potentially inconsistent data after unexpected power-down situations.
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Metadata used to store volume configuration on mirrored disks.
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Automatic background resynchronization while host I/Os continue.
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Background media verification ensures that data on IM/IME volumes
is always accessible.
2.3 IM/IME Description
The LSI Integrated RAID solution supports one or two IM/IME volumes
on each LSI SAS controller (or one IM/IME volume and one Integrated
Striping volume). Typically, one of these volumes is the boot volume, as
shown in
Figure 2.1 . Boot support is available through the firmware of the
LSI SAS controller that supports the standard Fusion-MPT interface. The
runtime mirroring of the boot disk is transparent to the BIOS, drivers, and
operating system. Host-based status software monitors the state of the
mirrored disks and reports any error conditions.
Figure 2.1 shows an IM
implementation with a second disk as a mirror of the first (primary) disk.