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Tuesday, December 24, 2019

What does raid 1+0 do?

What does raid 1+0 do?

  • Stripe
  • Mirror + Stripe
  • Mirror
  • Duplicate 
What does raid 1+0 do?


RAID 10, also known as RAID 1+0, is a RAID configuration that combines disk mirroring and disk striping to protect data. ... As long as one disk in each mirrored pair is functional, data can be retrieved. If two disks in the same mirrored pair fail, all data will be lost because there is no parity in the striped sets.
A RAID 1 configuration provides only data protection by copying data from one drive to another. Data is fully protected as the mirror copy is available if the originating drive is disabled or unavailable. Because it makes a full duplicate of the data, the RAID 1 requires twice as much storage capacity as required by the original data.
RAID 0 doesn't provide any data protection; its sole purpose is to enhance drive access performance. It does that by spreading the data out across two or more drives so that multiple read/write heads on the drives can write or access portions of data simultaneously, thus speeding up overall processing.
RAID 10 provides data redundancy and improves performance, and is the a good option for I/O-intensive applications -- including email, web servers, databases and operations that require high disk performance -- and organizations that require little to no downtime.
The high performance of RAID 10, and its ability to speed up both write and read activities, makes it suited to highly used, mission-critical database servers. However, the four-disk minimum requirement makes RAID 10 a costly choice for smaller computing environments, as it entails a 100% storage capacity overhead, which may be overkill for small businesses or consumer use.



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