Intel RS3UC080 User Guide - Page 18
Integrated Mirroring Enhanced with Three Disks, Caution
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You can configure an Integrated Mirroring Enhanced volume with up to 10 mirrored disks. The following figure shows the logical view and physical view of an Integrated Mirroring Enhanced volume with three mirrored disks. The firmware writes each mirrored stripe to a disk and mirrors it to an adjacent disk. RAID 1E is another term for this type of mirrored configuration. Logical View Physical View Mirrored Stripe 1 Mirrored Stripe 2 Mirrored Stripe 3 Mirrored Stripe 4 Mirrored Stripe 1 Mirrored Stripe 1' Mirrored Stripe 2 Mirrored Stripe 2' Mirrored Stripe 3 Mirrored Stripe 3' + + Mirrored Stripe 4 Mirrored Stripe 4' Mirrored Stripe 5 Mirrored Stripe 5' Mirrored Stripe 6 Mirrored Stripe 6' Mirrored Stripe N Mirrored Stripe N - 1' Mirrored Stripe N Mirrored Stripe N' 3_00008-00 Figure 3. Integrated Mirroring Enhanced with Three Disks You can configure an Integrated Mirroring + Striping volume with an even number of disks, ranging from a minimum of four disks to a maximum of ten disks. The following figure shows the logical view and physical view of an Integrated Mirroring + Striping volume with four mirrored disks. The firmware writes each mirrored stripe to a disk and mirrors it to an adjacent disk. RAID 10 is another term for this type of configuration. Logical View Physical View Mirrored Stripe 1 Mirrored Stripe 2 Mirrored Stripe 3 Mirrored Stripe 4 Mirrored Stripe 1 Mirrored Stripe 1' Mirrored Stripe 2 Mirrored Stripe 2' Mirrored Stripe 3 Mirrored Stripe 3' Mirrored Stripe 4 Mirrored Stripe 4' + + + Mirrored Stripe 5 Mirrored Stripe 5' Mirrored Stripe 6 Mirrored Stripe 6' Mirrored Stripe 7 Mirrored Stripe 7' Mirrored Stripe 8 Mirrored Stripe 8' Mirrored Stripe N Mirrored Stripe N - 1 Mirrored Stripe N - 1' Mirrored Stripe N Mirrored Stripe N' 3_00009-00 Figure 4. Integrated Mirroring + Striping with Four Disks The Intel SAS-3 BIOS configuration utility (SAS-3 BIOS CU) enables you to create mirrored volumes during initial setup and to reconfigure them in response to hardware failures or changes in the environment. Caution: The SAS3 BIOS CU deletes all existing data from the disks drives when you select them to use for a mirrored volume. 8 Intel® Integrated RAID Solution User Guide