H3C UniServer R4900 G3 User Manual

13
• Blocked
I/O Policy
I/O policy:
• Direct—Enables the system to read or write data directly from or into a
drive by read operations (excluding read ahead operations) or by write
through operations of the storage controller.
• Cached—Enables the cache module to process all read and write
operations of the storage controller. Recommended only when
CacheCade 1.1 is configured.
Drive Cache
Drive cache policy:
• Enable—Enables the controller to write data in the cache of physical
drives during the write process to improve write performance. If this
policy is used without a protection method in place, data will get lost
upon an unexpected power failure.
• Disable—Disables the controller from writing data in the cache of
physical drives during the write process. If this policy is used, data will
not get lost upon an unexpected power failure, but the write performance
will not as high as when drive caching is enabled.
•
Unchanged
—Uses the default drive cache policy.
Disable Background
Initialization
Enabling status of background initialization.
Default Initialization
Default initialization mode:
• NO.
• Fast.
• Full.
Emulation Type
Sector size reported to the OS:
• Default—Displays 512e (4K) as the sector size as long as one 512e
member drive exists, and displays 512n as the sector size if no 512e
member drive exists.
• Disable—Displays 512n as the sector size if no 512e member drive
exists.
• Force—Displays 512e (4K) as the sector size even if no 512e member
drive exists.
Save Configuration Select this option to save the configuration.
8. On the screen as shown in Figure 17, select Confirm and press Enter. On the dialog box that
opens, select Enabled and press Enter. Then, select Yes and press Enter.

H3C UniServer R4900 G3 Specifications

General

Processor	Intel Xeon Scalable processors
Processor Sockets	2
Memory Slots	24 DIMM slots
RAID Support	RAID 0, 1, 5, 6, 10, 50, 60
Form Factor	2U rack server
Storage	Up to 12 x 3.5" or 2.5" drives
Network Interface	Multiple 1G/10G Ethernet ports
PCIe Slots	Up to 7 x PCIe 3.0 slots
Power Supply	Redundant power supplies
Operating System Support	Microsoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware ESXi
Memory	Up to 3TB DDR4

Summary

Storage controller overview

Storage controller features

Hot spare drives

Describes the functionality and types of hot spare drives for improved data security.

RAID rebuild

Explains the process of RAID rebuild when a drive is replaced.

Copyback

Configuring the embedded RSTe RAID controller or VROC SATA RAID controller

Accessing the RSTe configuration screen

Configuring hot spare drives

Explains the procedure for configuring hot spare drives.

Configuring an NVMe VROC module

About the NVMe VROC module

Configuring RAID arrays in UEFI mode

Details how to configure RAID arrays for NVMe drives in UEFI mode.

Configuring VMD settings

Provides steps to configure Intel VMD settings for NVMe RAID configuration.

Appendix B RAID arrays and fault tolerance

Fault tolerance methods

RAID levels