Dell PowerEdge Expandable RAID Controller 3 Guide de l'utilisateur télécharger pdf (Page 11)

Integrated Mirroring Overview 11

Figure 2-2. Integrated Mirroring with Two Disks (Mirroring Configuration)

Fig 2-3 shows the logical view and physical view of SCSI configuration when there are two disks in

the system.

Figure 2-3. Integrated Mirroring with Two Disks (SCSI Configuration)

Dell, Inc. provides the BIOS-based configuration utility to enable the user to configure the

mirroring attributes during initial setup and to reconfigure them in response to hardware failures or

changes in the environment.

Integrated Mirroring Firmware

This section describes features of the PERC 4/IM firmware.

Host Interface

Through the Fusion-MPT interface, the host OS has access to the logical IM drive as well as the

physical disks. This allows support for domain validation and Ultra320 SCSI expander

configuration.

LBA 1

LBA 2

LBA 3

LBA N

Logical View

Physical View

LBA 1’

LBA 2’

LBA 3’

LBA N’

LBA 1

LBA 2

LBA 3

LBA N

LBA 1

LBA 2

LBA 3

LBA N

Logical View

Physical View

LBA x

LBA N’

LBA 1

LBA 2

LBA 3

LBA N

LBA x

LBA N

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 29 30

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Dell PowerEdge Expandable RAID Controller 3 Guide de l'utilisateur Page 11