RAID Basics, RAID Level, Capacity Benefits

MS-7255 Mainboard

Introduction

This section gives a brief introduction on the RAID-related background knowledge and a brief introduction on VIA SATA RAID Host Controller. For users wishing to install their VIA SATA RAID driver and RAID software, proceed to Driver and RAID Software Installation section.

RAID Basics

RAID (Redundant Array of Independent Disks) is a method of combining two or more hard disk drives into one logical unit. The advantage of an Array is to provide better performance or data fault tolerance. Fault tolerance is achieved through data redundant operation, where if one drives fails, a mirrored copy of the data can be found on another drive. This can prevent data loss if the operating system fails or hangs. The individual disk drives in an array are called “members”. The configuration information of each member is recorded in the “reserved sector” that identifies the drive as a member. All disk members in a formed disk array are recognized as a single physical drive to the operating system.

Hard disk drives can be combined together through a few different methods. The different methods are referred to as different RAID levels. Different RAID levels represent different performance levels, security levels and implementation costs. The RAID levels which the VIA VT8237A / VT8237S SATA RAID Host Controller supports are RAID 0 and RAID 1. The table below briefly introduced these RAID levels.

RAID Level	No. of Drives	Capacity	Benefits
RAID 0	2	Smallest size * 2	Highest performance without
(Striping)			data protection
RAID 1	2	Smallest size	Data protection
(Mirroring)

RAID 0 (Striping)

RAID 0 reads and writes sectors of data interleaved between multiple drives. If any disk member fails, it affects the entire array. The disk array data capacity is equal to the number of drive members times the capacity of the smallest member. The striping block size can be set from 4KB to 64KB. RAID 0 does not support fault tolerance.

RAID 1 (Mirroring)

RAID 1 writes duplicate data onto a pair of drives and reads both sets of data in parallel. If one of the mirrored drives suffers a mechanical failure or does not respond, the remaining drive will continue to function. Due to redundancy, the drive capacity of the array is the capacity of the smallest drive. Under a RAID 1 setup, an extra drive called the .spare drive. can be attached. Such a drive will be activated to replace a failed drive that is part of a mirrored array. Due to the fault tolerance, if any RAID 1 drive fails, data access will not be affected as long as there are other working drives in the array.

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MS-7255 specifications

The MSI MS-7255, also known as the MSI K8N Neo4, is a versatile motherboard that has gained attention for its robust features, compatibility, and performance capabilities. Designed to support AMD's Socket 939 processors, the MS-7255 caters to users looking for a reliable platform for both gaming and everyday computing tasks.

One of the standout features of the MSI MS-7255 is its support for high-performance memory. With four DDR DIMM slots, the motherboard can accommodate up to 4GB of DDR400 RAM, allowing for fast data processing and multitasking capabilities. This memory configuration can significantly enhance overall system responsiveness, making it ideal for power users and gamers who demand excellent performance.

The MS-7255 is also equipped with NVIDIA's nForce 4 chipset, which brings significant advantages in terms of connectivity and performance. This chipset supports PCI Express, offering users the ability to install next-generation graphics cards that utilize the PCIe x16 interface, paving the way for superior graphics performance in gaming and graphic-intensive applications.

In terms of storage, the MSI MS-7255 features an impressive array of SATA ports. With up to four SATA II 3.0 Gb/s connectors, users can easily set up RAID configurations for improved data redundancy or performance. This flexibility is particularly appealing to gamers and content creators looking for faster load times and better system performance.

The motherboard also includes integrated 8-channel audio, courtesy of Realtek, providing users with high-quality sound output without the need for additional audio cards. This feature enhances the multimedia experience, making it suitable for movies, music, and gaming environments.

Connectivity options abound with the MSI MS-7255, featuring built-in Ethernet and multiple USB ports for peripheral connections. These ports enrich the user experience, allowing easy access to a range of external devices, from printers to game controllers.

In terms of user-friendly features, the MS-7255 boasts a well-designed BIOS, allowing users to easily tweak system settings for optimal performance. The board's layout also facilitates ease of installation and accessibility to components, which is a crucial factor for DIY builders.

Overall, the MSI MS-7255 is a compelling choice for users seeking a reliable, feature-rich motherboard. Its blend of performance, connectivity, and audio capabilities make it a worthy consideration for anyone looking to build a powerful and efficient system. With its ability to support the demands of both gamers and general users alike, the MS-7255 proves to be an enduring option in the motherboard market.