
LaCie 5big Thunderbolt 2 User Manual 32
RAID 6
RAID 6 writes data across all disks in the volume and two parity blocks for each data block. If one physical disk
fails, the data can be rebuilt onto a replacement disk. With two parity blocks per data block, RAID 6 supports up
to two disk failures with no data loss. RAID 6 synchronizing from a failed disk is slower than RAID 5 due to the
use of double parity. However, it is far less critical due to its double-disk security.
A minimum of four disks is required to create a RAID 6 volume. RAID 6 offers very good data protection with a
slight loss of performance compared to RAID 5.
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