best raid for backup

Introduction One of the most common techniques to improve either DataReliabilityOr DataPerformance(Or both) isCalled RAID (Redundant Array of Inexpensive Disks). The concept was developed in1977 by DavidPatterson, Garth Gibson, and Randy KatzAs a way to use several inexpensiveDisks to create a single disk from the perspective of the OS while alsoAchieving enhanced reliability or performance or both. Before anyone erupts and says that raidDoes not St

RaidRedundant array of independent hard disks (RAID, redundant array of independent Disks), formerly redundant Array of inexpensive disks (redundant array of inexpensive Disks), referred to as disk arrays.Divided into raid-0,raid-1,raid-2,raid-3,

/wyfs02/M00/8A/F0/wKiom1g_nTbiQ_HrAABlxxNRHdY108.png "title=" Qq20161201114713.png "alt=" Wkiom1g_ntbiq_hraablxxnrhdy108.png "/> also needs to generate a configuration file650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M00/8A/EC/wKioL1g_nerj_JDGAAA4SWnWfUE325.png "title=" Qq20161201115014.png "alt=" Wkiol1g_nerj_jdgaaa4swnwfue325.png "/>③ partitioning The MD1650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/8A/EC/wKioL1g_nqPhajSRAABf2mE7ZK8698.png "title=" Qq20161201115315.png "

Tags: based on inux MKFS.EXT4 disk group disadvantage requires OSS via sizefirst, let's look at the features and principles of various raid volumes. 1,RAID0 features: With split, the data will be split on several disks. Data is divided into chunks, and each chunk is written to a different disk. As a result, each disk's workload is reduced, which helps speed data transfer. RAID-0 makes the disk more responsi

RAID: Redundant array of independent disks. In the early days it was called the redundant Arrays of inexpensive disks, a "cheap Redundant array of disks"; it turned out that the inexpensive effect of such a device was really high. Therefore, change ' inexpensive ' to ' independent ', what we now call "independent redundant disk array". Redundant array of independent disks is the same data stored in different parts of the hard disk, and do a

What is RAID? RAID is an abbreviation for the English Redundant array of independent disks, which translates into Chinese as a redundant array of independent disks, or simply a disk array. Simply put, RAID is a technology that combines multiple separate hard disks (physical hard disks) into a single hard drive group (logical hard disk) in a different way, provi

Article Title: RHCE's contact notes on Soft RAID and LVM. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Environment VM + rhel5.1 Add a 1 GB Virtual Disk (sdb) for testing. Create 4 partitions (sdb1-4) for sdb each partition is 100 M Fdisk/dev/sdb Partprobe RAID Create

RAID Arrays and LVM logical volume groups are primarily used for backup-to-disk and extensions, where raid is used for Backup-to-disk and LVM for disk space management. One: The principle of RAID work. 1. Soft raid is more commo

RAID is an English redundant array of independent Disks (redundant array of independent disks), referred to as a disk array. Below are the various levels of RAID described below.First, Why use RAID? 1, high speed access to disk (speed up): Raid the ordinary hard disk into a disk array, the host to write data, the

FTP Server transfer performance test RAID 1+0 Chapter February 09, 2012 13:27 it168 website Original Huizer Editor: Huizer View full text likes (0) Comments (1) share "IT168 evaluation" as the most commonly used in the daily office of the application server, the FTP server has a lot of work, and in the FTP server performance indicators, transmission efficiency is undoubtedly the primary factor of concern, in the FTP server to do

Resolve redundant raid Disk Arrays Preface In the past, computer systems were often limited to writing information to a single disk. This type of disk is usually expensive and prone to failures. Hard disks have always been the most vulnerable part in computer systems, because these devices are the only mechanical part in systems where other components are completely electronic. The disk drive contains many high-speed active mechanical parts. The probl

Configure soft raid under Linux system One, set up diskHere we take RAID 1 as an example, and the other RAID level settings are similar. Riad 1 requires two hard drives, I added 2 80G hard drives to the VPS. In the system, use the Fdisk–l command to viewSecond, install MdadmMDADM is the abbreviation of multiple devices admin, which is a standard software

backup; Disk utilization is 50%, that is, 2 100G of disk composition RAID1 can only provide 100G of free space. RAID-5 Characteristics: The use of parity check, high reliability The disk checksum is hashed to a different disk, increasing the read and write rate. Data cannot be restored only if two disks are lost at the same time At least three hard drives and the hard disk

Point recognition analysis:This article describes how to load the driver in Raid mode and install the operating system to enable the high-speed cache acceleration function.Tip: This article is only applicable to models with Raid mode in Lenovo Ideapad U310 U410 BIOS. The content of this article is intended for your learning and reference. If you have any questions, we recommend that you contact the nearest

RAID, redundant arrays of inexpensive Disks, inexpensive redundant disk array. Also known as redundant arrays of independent Disks, an independent honor disk array.The rationale is to use multiple smaller disks to form a large disk group in different organizational ways to improve the disk's IO capability and disk durability. Because of their different organizational ways, they are divided into different levels.RAID has so far been divided into 0-6 se

Getting started with Linux: disk array (RAID) RAID is a Redundant Array of low-cost Disks (Redundant Array of Inexpensive Disks). RAID technology combines individual Disks into a logical hard disk in different combinations, this improves the disk reading performance and data security. Different combinations are identified at the

RAID (cheap redundant disk array) It can be divided into RAID0, RAID1, RAID4, RAID5, RAID6, RIAD10, RAID01 RAID0: RAID0 features no fault tolerance, but can read and write multiple disks at the same time. Capacity is n RAID1: RAID1 has a fault tolerance function. At that time, there were only two disks, one of which was used for backup and the read/write speed was the slowest. Capacity: 1 RAID4: RAID4 is fa

Terms RAIDAn independent redundant disk array is a storage term. to improve performance and reliability, multiple disks are combined, which is a storage unit from the outside. the detailed introduction to RAID is not within the scope of this document; Wikipedia article "RAID" provides better content. Hard RAIDHard RAID is a R