g technology raid 1

raid Introduction: RAID (Redundant array of inexpensive Disks) is called a redundant array of inexpensive disks. The basic principle of RAID is to put multiple inexpensive small disks RAID level description; generally used RAID class, Are

Graphic RAID 0, RAID 1, RAID 5, RAID 10 RAID (Redundant Array of Independent Disk Independent Redundant Disk Array) technology was proposed by the University of California at Berkeley in 1987, initially to combine small cheap disk

Often someone communications raid, but it does not know its so dye, today I will be an example of Internet cafes to explain.With the expansion of Internet cafes, internet cafes will increase the number of computers, Internet users also increased, the speed of data access to the server will become a new bottleneck, many customers began to complain about the server on-demand film comparison card, game upgrade slow and other issues, if not to take releva

Raid implementation:Raid: cheap redundant disk array, which turns several hard disks into a wholeLater, because it lost its original cheap purpose and became very expensive, it changed its nameIndependent redundant disk arrayAlthough we cannot implement raid on hardware, we can still implement raid because of our limited strength and we didn't buy those devices.N

(mirroring) Part 5th: How to set RAID6 (striped dual distributed parity) in Linux Part 6th: Set up RAID 10 or 1 + 0 (nested) in Linux 7th: Add existing raid Array and delete the damaged disk part 8th: Recovering (rebuilding) a damaged drive in RAID part 9th: M

RAID1 (mirroring) in Linux Part 4: How to set up RAID5 in Linux (striped and distributed parity) part 5th: How to set up RAID6 in Linux (striped dual distributed parity) part 6th: Set up RAID 10 or 1 + 0 (nested) in Linux part 7th: Add an existing RAID array and delete the damaged disk part 8th: Recovering (rebuildi

as hardware raid, and features are not as good as hardware raid. Next we will introduce various RAID technologies I. RAID 0 The band technology is used to write data in parallel on multiple disks in bytes or bits (the starting offset of each disk is the same, and the subsequent segments of a certain number of bytes, i

, and the remaining 10GB capacity on that 30GB hard drive is wasted. At the same time, if the speed of two hard drives is different, then the faster hard drive will still stop to wait for the slower hard drive to complete the task before taking the next step.Random read performance of RAID1: goodRandom write performance for RAID1: goodContinuous read performance of RAID1: GeneralContinuous write performance for RAID1: goodRAID1 Advantages: The data is high reliability, easy to implement and simp

data, this data will record the backup data of other disks for rescue when the disk is damaged. Because of the same check code, the total capacity of the RAID5 is reduced by a chunk of the overall disk count.RAID5 only supports the damage of a piece of disk by default. Spare disk preparation capabilities.is one or more disks not included in the original disk array level, this disk is not used by the disk, when there is any disk damage to the disk array, then this piece of spare disk will be act

data, this data will record the backup data of other disks for rescue when the disk is damaged. Because of the same check code, the total capacity of the RAID5 is reduced by a chunk of the overall disk count.RAID5 only supports the damage of a piece of disk by default. Spare disk preparation capabilities.is one or more disks not included in the original disk array level, this disk is not used by the disk, when there is any disk damage to the disk array, then this piece of spare disk will be act

Using RAID in Linux (1): introduces the level and concept of RAID RAID refers to the Redundant Array of Inexpensive Disks, but now it is called the Redundant Array of Independent Drives ). A small disk was very expensive in the past, but now we can buy a larger disk at a low cost.