CompTIA A+ 1101 RAID

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4 Terms

1
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RAID 0 - Striping

- requires at least 2 drives

- evenly splits data

- high performance

- no redundancy

2
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RAID 1 - Mirroring

- file blocks are duplicated between 2 or more physical drives

- high disk utilization (doubled)

- high redundancy

3
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RAID 5 - Striping with Parity

- file blocks are striped (like RAID 0), along with a parity block

- requires at least 3 disks

- efficient use of disk space, since files aren't duplicated

- parity is spread across drives

- high redundancy

- parity calculation may effect performance

4
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RAID 10 (1+0) - A Stripe of Mirrors

- the speed of striping, the redundancy of mirroring

- requires at least 4 drives