H3C UniServer B5700 G3, User Manual

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Configuring a RAID-P430-M1 or
RAID-P430-M2 storage controller
About RAID-P430-M1 and RAID-P430-M2
storage controllers
The RAID-P430-M1 and RAID-P430-M2 storage controllers support 6-Gbps and 12-Gbps
SAS/SATA data channels and caching, which greatly increases performance and data security. For
more information about storage controller details and the supported cache, contact Technical
Support.
Features
Operating modes
The storage controller supports the following operating modes:
•
RAID: expose raw mode —This is the default mode. In this mode, the system can identify and
assign drive letters to both raw drives and member drives of RAID arrays.
•
RAID: hide raw mode —In this mode, the system can identify and assign drive letters only to
member drives of RAID arrays. Raw drives cannot be identified or used by the operating
system.
•
HBA mode —In this mode, physical drives are exposed as raw drives and RAID functions are
disabled.
•
Auto Volume mode —In this mode, physical drives with system partitions are exposed as raw
drives. Physical drives without system partitions are configured as simple volumes.
•
Simple Volume mode —In this mode, only non-redundant RAID arrays with the simple volume
level (each contains only one drive) can be created. RAID arrays with other RAID levels
cannot be created.
NOTE:
Raw drives refer to drives that do not have RAID configuration.
Before you configure RAID in RAID: expose raw or RAID: hide raw mode or set the controller
operating mode to auto volume or simple volume mode, you must initialize target drives.
Before you configure the controller to operate in RAID: expose raw mode without RAID
configuration or in HBA mode, you must uninitialize target drives.
For the new mode to take effect, restart the server after an operating mode change.
The operating system might fail to start up after the operating mode of the storage controller is
changed. To resolve the issue, you can re-install the operating system. If the issue persists, contact
Technical Support.
RAID levels
The supported RAID levels vary by storage controller model. For more information about the
supported RAID levels of each storage controller, see
H3C Servers Storage Controllers Technical
Specifications .