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Which following data backup methods provides fast recovery time, medium expense and may meet a Maximum Tolerable Downtime (MTD)?
Correct Answer: B
Disk shadowing (also known as disk mirroring or RAID 1) provides: - Fast recovery time (since data is mirrored in real-time). - Medium expense (compared to more expensive solutions like high-availability clusters). - Can meet a moderate Maximum Tolerable Downtime (MTD) because failover is quick.