Intel RS2WC080, Hardware User'S Manual

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Intel® RAID Controller RS2WC080 Hardware User’s Guide 5
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Supports SMP to communicate topology management information.
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Supports single PHY or wide ports consisting of 2, 3, or 4 PHYs within a single
quad port.
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Allows addressing of multiple SATA targets through an expander if using SATA 2.0-
compliant hard disk drives.
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Allows multiple initiators to address a single target (in a fail-over configuration)
through an expander.
Note: All expander features will not be available at launch.
Online Capacity Expansion and RAID Level Migration Rules
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Migration must occur to the same or larger capacity configuration.
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Migration cannot occur if there is more than one virtual disk in an array.
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Migration and OCE cannot be done on Spanned Arrays (RAID 10 and 50).
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Migrations supported are RAID 1 to RAID 0, RAID 5 to RAID 0.
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With OCE, migrations supported are RAID 0 to RAID 1, RAID 0 to RAID 5, and
RAID 1 to RAID 5.