Mean time to data loss is similar to MTBF for disks and tapes, but is likely to differ in RAID arrays, where redundancy can protect against data loss due to component failures.

• 对于磁盘和磁带设备来说，平均数据丢失时间的概念与MTBF相似，但是对于RAID阵列来说，平均数据丢失时间可能与MTBF不同，这是因为在RAID中，冗余性能够保护组件故障条件下数据丢失情况的发生。