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Dell PowerEdge RAID Controller 9 User’s Guide H330, H730, and H830

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PERC 9 personality management

PERC 9 series of cards support two personality modes.

  • RAID mode: RAID mode is commonly used and the controllers are mostly shipped from the factory in RAID mode. This mode allows the creation and operation of RAID virtual disks and non-RAID disks.

  • HBA mode: In the HBA mode, PERC controller operates as Host Bus Adapter (HBA). This mode does not contain virtual disks or the ability to create them. All physical disks function as non-RAID disks under operating system control. The PERC card acts as a conduit between the host server and the physical disks. Input and output requests originate from the host and are passed through the controller to the physical drives. HBA mode is the approach used for Windows Storage Spaces.

NOTE:HBA mode should be enabled for customers, using Microsoft Storage Spaces or VMware Virtual SAN. HBA mode allows the operating system to control backplane LED functionality on supported systems.
NOTE:When the controller is in HBA mode, SMART monitoring is disabled.

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