raid 恢复数据 效率,raid恢复数据 (解决方法与步骤)
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2023-09-30 22:03 46
RAID 6 is a type of redundant array of independent disks that uses dual distributed parity to provide fault tolerance and data protection. The recovery rate in RAID 6 is calculated by determining the probability of recovering data after a disk failure.
To calculate the recovery rate in RAID 6, you need to know the number of disks in the array (N), the number of parity disks (P), and the number of failed disks (F). The recovery rate can be calculated using the formula:
Recovery Rate = (1 - (Number of Failed Disks / Number of Disks)) * 100%
For example, let's say you have a RAID 6 array with 8 disks and 2 parity disks. If 1 disk fails, the recovery rate would be:
Recovery Rate = (1 - (1 / 8)) * 100% = (1 - 0.125) * 100% = 87.5%
This means that you have a 87.5% chance of successfully recovering the data in the array after a single disk failure in this RAID 6 configuration.