MSI 5500 Master Series, User Manual

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B-4
MS-96C8 Server Board
2.2 IM Features
LSI Logic Integrated Mirroring and Integrated Mirroring Enhanced support the follow-
ing features:
Configurations of one or two IM or IME volumes on the same LSI Logic SAS
controller. Each volume can consist of two mirrored disks (IM) or three to eight
mirrored disks (IME).
(Optional) One global hot spare disk per controller. If a global hot spare disk is
defined, the upper limit for an IME volume is seven mirrored disks.
Mirrored volumes run in optimal mode or in degraded mode (if one mirrored disk
fails)
Hot swap capability
Presents a single virtual drive to the OS for each IM/IME volume
Supports both SAS and SATA disks, although the two types of disks cannot be
combined on the same LSI Logic SAS controller
Fusion-MPT architecture
Easy-to-use BIOS-based configuration utility (and DOS-based configuration
utility for manufacturing use only)
Error notification: OS-specific event log updated by drivers and errors dis-
played inside the Fusion-MPT BIOS
SES status LED support for Integrated Mirroring disks
W rite journaling, which allows automatic synchronization of potentially incon-
sistent data after unexpected power-down situations
Metadata used to store volume configuration on mirrored disks
Automatic background resynchronization while host I/Os continue
Background media verification ensures that data on the IM volume is acces-
sible
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