best raid for backup

RAID Mode IntroductionThe Orico 3559RUS3 HDD enclosure provides five types of disk array build modes, including RAID 0, Raid 1/10, RAID 3, RAID5, Combine, which have different functions, as explained below.RAID, the English "Redundant Array of independent Disks" abbreviation, the Chinese name is called "Redundant Array

Brief introductionRAID is a noun that we can often see. But because rarely can experience in the actual environment, so it is difficult to have a very clear understanding and grasp of its principle. This article will introduce and summarize the raid technology in order to clarify its concept as much as possible.RAID is all called Redundant Array of independent disks (redundant array of independent Disks), the basic idea is to combine a number of relat

RAID 10 (also called a raid 1+0 or mirrored stripe) array combines the functionality features of RAID 0 and RAID 12 to provide high-performance, fault-tolerant disk input/output operations. In RAID 0, read/write operations execute across multiple drives, and in

Today's operating systems, whether Windows or Linux have RAID capabilities, RAID is divided into hardware RAID and software RAID, hardware RAID is through the RAID card, software RAID i

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.RAID0Stripe (Stripe)Store. Theoretically, a RAID0 consisting of n disks is n times the read and write speed of a single disk. RAID 0 continues tobits or bytesSplit the data for the unit,

]Pvmove [Pvremove]Pvremove [PVs]PVS//View physical volumes[Pvscan]Pvscan//Scan a physical volume on your computer[Restore]Restore-f -T view the backup file for important data-C View whether the backup and actual files are different, and output different files-I This is an interactive command that can restore some files-R Restore the entire file system-H View information such as Inode,label in a full

Create soft RAID 1 under CentOS6.5What is RAID? RAID, Redundant Array of Independent Disks, formerly known as Redundant Array of Inexpensive Disks, is short for hard disk arrays. The basic idea is to combine multiple relatively inexpensive hard disks into a hard disk array group, so that the performance can reach or even exceed a hard disk with a high price and h

Understanding raid Disk Arrays In recent years, hard disks have been greatly improved in terms of capacity, access speed, and reliability. However, this improvement still keeps up with the development requirements of processors, making hard disks a bottleneck in computer systems. In order to meet the high-speed disk access requirements of application systems, many measures have been taken. In 1988, Professor D. A. Patterson of UC Berkeley proposed a l

/dev/sdd1 (sdd1 becomes a hot backup disk) 7. Save all configurations Echo device/dev/SD * [1-9]>/dev/mdadm. conf Mdadm-d-s>/dev/mdadm. conf mdadm usage reference (to) mdadm is a tool for managing software raid in Linux. The following content comes from the manpage: basic syntax: mdadm [mode] [Options] [mode] There are 7 types: assemble: adds an array previously defined to an existing array. Build: Build a

Physical environment: Virtual Machine centos6.4Configuration: 8G memory, 2*2 core CPU, 3 virtual hard disks (SDA,SDB,SDC,SDB and SDC are identical) in the real production environment, the system hard disk is separate from the database and application, This facilitates the maintenance of the system and the use of data applications. In this environment, SDA as a system disk, SDB+SDC do soft RAID0 (if you do RAID5, only need to add a piece of the same as SDB, and select Level 5 when creating the

First, the purpose of the experiment1. Mastering the implementation method of soft raid in Linux system;2. Master the configuration process of RAID5;3. Be familiar with RAID, 5 characteristics through experiment.Second, the contents and steps of the experiment 1. Create a Linux in VMware.2. Add the Linux to 4 virtual disks (select SCSI type. 2G).3, the use of Madam in Linux to create RAID5,

Comprehensive use of RAID and LVM in linux !, Raidlvm The LVM can elastically adjust the filesystem size, but the disadvantage is that it may not have the acceleration and hardware backup (unlike snapshot) functions. Disk arrays provide performance and backup functions, but cannot provide advantages similar to LVM. In this situation, we want to use the "build LVM

scenarios where the security of the data is not required.Raid1RAID1 and RAID0 are the two extremes in raid, RAID1 provides full data backup, and the data to be stored is stored in multiple copies (usually RAID1 only two hard drives), and each hard disk stores one copy of the data. RAID1 provides data redundancy through mirroring, and disk space utilization is not high, only min (s1,s2. SN). In addition, fo

RAID 0, also known as stripe (strip, string column) or striping, represents the highest storage performance in all RAID levels. RAID 0 improves storage performance by distributing continuous data to multiple disks for access. In this way, the system can execute data requests on multiple disks in parallel, each disk executes its own data request. This type of para

RAID is divided into soft and hard backupsSoft backup is mainly used to experimentShould be backed up for production environmentsRAID0 (striped volume) with very high data transfer rates, redundant 1-block disks without dataRAID1 (mirrored volume) provides data redundancy with a low utilization of 2 disksRAID10 (striped volume + mirrored volume) low disk utilization, fast data transfer 3 disksRAID5 data tra

Detailed description of RAID level and implementation instance operations I. Brief History of RAID 1. RAID Origin Berkeley: Berkeley proposed: A case for Redundent Arrays of Inexpensive Disks is RAID (cheap Redundant Array) Today: Redundant Arrays of Independent Disks Independent Redundant Array 2. Advantages and Perfo

Background: RAID is a Redundant Array composed of multiple low-cost disks. It appears as an independent large storage device in the operating system. RAID can give full play to the advantages of multiple hard disks, increase the speed of the hard disk, increase the capacity, and provide Fault Tolerance functions to ensure data security. In the case of any disk failure, you can continue to work, the disk wil

Background: Raid is a Redundant Array composed of multiple low-cost disks. It appears as an independent large storage device in the operating system. Raid can give full play to the advantages of multiple hard disks, increase the speed of the hard disk, increase the capacity, and provide Fault Tolerance functions to ensure data security. In the case of any disk failure, you can continue to work, the disk wil

RAID Technology IntroductionBrief introductionRAID is a noun that we can often see. But because rarely can experience in the actual environment, so it is difficult to have a very clear understanding and grasp of its principle. This article will introduce and summarize the raid technology in order to clarify its concept as much as possible.RAID is all called Redundant Array of independent disks (redundant ar

RAID cards are generally divided into hard raid card and soft RAID card two kinds of hardware to achieve the RAID function is hard raid, independent RAID card, the motherboard integrated RAID