Archive for July 15th, 2015

by Tom Nelson

RAID 5 is a striping RAID level designed to increase the speed of disk reads and writes. RAID 5 is similar to RAID 3 in that it uses a parity bit to help ensure data integrity. However, unlike RAID 3, which uses a disk dedicated to storing the parity, RAID 5 distributes the parity to all drives in the array.

RAID 5 provides for drive failure tolerance, allowing any single drive in the array to fail without losing any data in the array.

When a drive fails, the RAID 5 array can still be used to read or write data. Once the failed drive is replaced, the RAID 5 array can enter a data recovery mode, where the parity data in the array is used to rebuild the missing data on the newly installed drive.

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