You will find several regular RAID levels from RAID 0 to RAID six.
RAID 0: stripes the information across a set of drives but should you lose a drive you drop everything RAID 1: mirrors the information to a further disk usually in mirrored pairs of two RAID three: stripes the information and has a drive just for parity RAID 5: distributes information and parity across the drives in case you lose 1 RAID 6: distributes information and doubles the parity permitting for a two drive failure The most normally employed configuration is RAID 5. In order to comprehend what RAID is you'll want to understand how the tough drives perform inside your personal computer or externally in an enclosure. In order to possess a RAID configuration you'll need a minimum of three hard disks. For our purposes we'll be working with 5 difficult drives in our configuration. The personal computer must have a RAID controller inside the pc around the motherboard so as to connect the difficult drives. The other choice would be to have an external RAID enclosure to hold the tough disks. With 5 disks inside the configuration every single block of information is being written and spread across these five drives writing a marker (parity bit) in case there is a loss of 1 of those drives. Within the occasion of a drive failure the remaining 4 drives carry the load making use of the parity bit so it really is not noticed by the end user in the laptop or computer. The parity bit keeps track of errors as every single block of information is written to the tough drives. In the case with the loss of a second drive that will be catastrophic even to get a RAID five configuration to manage. Ordinarily RAID devices have LEDs around the drive enclosures that glow red in case of drive failure. The RAID unit manufacturer must supply alerting computer software which will work together with your operating system along with the program log to notify you of a failure too. Once the failed drive is replaced the RAID unit will rebuild the data around the new drive re-establishing the RAID five set just like new. Recovery in the drive failure plus the subsequent rebuild process may possibly take various hours and can degrade the functionality of your computer system till completed. Raid on motherboard is out there from several manufacturers. Though not typical in desktop PCs you will discover choices permitting you to install external RAID enclosure with minimal work. Learn extra info raid 6 vs raid 5
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May 2019
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