HP HPE MR Gen11 User Manual

When the array contains only two physical drives, the fault-tolerance method is known as RAID 1.
The maximum number of drives supported for RAID 1 is 32.
When the array has more than two physical drives, drives are mirrored in pairs, and the fault-tolerance method is known as RAID 1+0 or RAID 10. If a physical
drive fails, the remaining drive in the mirrored pair can still provide all the necessary data. Several drives in the array can fail without incurring data loss, as long as
no two failed drives belong to the same mirrored pair. The total drive count must increment by 2 drives. A minimum of four drives is required.
The maximum number of drives supported for RAID 10 is 32.
This method has the following benefits:
It is useful when high performance and data protection are more important than usable capacity.
This method has the highest write performance of any fault-tolerant configuration.
No data is lost when a drive fails, as long as no failed drive is mirrored to another failed drive.
Up to half of the physical drives in the array can fail.
Read load balancingRead load balancing
In each mirrored pair or trio, the controller balances read requests between drives based upon individual drive load.
This method has the benefit of enabling higher read performance and lower read latency.
ParityParity
HPE MR Gen11 Controller User Guide 15

HP HPE MR Gen11 Specifications

General

Category	Controller
Product Name	HP HPE MR Gen11
RAID Levels	0, 1, 5, 6, 10, 50, 60
Form Factor	Low Profile
Storage	SAS/SATA HDD/SSD
Operating System Support	Linux, VMware

Summary

HPE MR Gen11 Controller

Controller Series Information

Explains the naming convention and details supported 200 and 400 series controllers.

Controller Supported Features

Lists and describes the comprehensive features supported by the controller.

RAID Technologies

Details various RAID levels, their benefits, and selection criteria for fault tolerance.

Transformation Operations

Covers operations like expanding arrays, replacing drives, and migrating RAID levels.

Drive Technology Features

Explains drive-related features such as hot-plug LEDs, consistency checks, and firmware updates.

Security Features

Discusses drive erase, sanitize options, self-encrypting drives, and security protocols.

Reliability and Performance

Covers ECC, thermal monitoring, SAS/PCIe link speeds, and I/O performance modes.

Installation Procedures

Provides step-by-step guides for installing the controller in servers.

Configuration Management

Details how to configure arrays and controllers using UEFI, MRSA, and StorCLI.

Logical Drive Management

Explains how to manage logical drives: view, delete, initialize, and erase.

Drive Management

Covers managing individual physical drives: view properties, locate, initialize, and erase.

Troubleshooting and Support

Outlines diagnostic tools, error reporting mechanisms, and available support resources.