H3C UniServer R4970 G7 User Manual page 689

Configuring a RAID-MARVELL-M.2
storage controller
About the RAID-MARVELL-M.2 storage controller
The RAID-MARVELL-M.2 standard storage controller can be installed onto a riser card to provide
limited RAID support for the system, which improves read/write performance and data security.
Features
RAID levels
Table 1 shows the number of drives required by each RAID level and the maximum number of failed
drives supported by each RAID level.
Table 1 RAID levels and the numbers of drives for each RAID level
RAID level
RAID 0
RAID 1
Restrictions and guidelines for RAID configuration
•
As a best practice, install drives that do not contain RAID information.
•
The RAID-MARVELL-M.2 storage controller does not support NVMe M.2 SSDs.
•
For efficient use of storage, use drives that have the same capacity to build RAID 1. If the
drives have different capacities, the lowest capacity is used across all drives in the RAID.
Configuring RAID arrays in UEFI mode
This section describes how to configure RAID arrays through a RAID-MARVELL-M.2 storage
controller in UEFI mode. For more information about how to access the BIOS setup utility and set
the boot mode to UEFI, see the BIOS user guide for the server.
The BIOS screens might vary by BIOS version and the screens used in this section are for
illustration only.
Controller configuration tasks at a glance
To configure controller settings in UEFI mode, perform the following tasks:
•
Accessing the storage controller configuration screen
•
Configuring RAID
•
Rebuilding a RAID array
•
Viewing physical drive information
•
Viewing logical drive information
•
Viewing storage controller information
Min. drives required
2
2
Max. failed drives
0
1
1