This document describes solutions to reduce the time of reduced data redundancy following transient disk failures that do not corrupt the disk. Beneficially, these solutions provide a way to estimate the most efficient repair strategy for the disk group, which helps to minimize the amount of time data in a disk group remains unprotected. Merely by way of example, a threshold value might specify a duration in which a disk failure should be considered transient, such that if the disk is repaired within that duration, only the stale extents on the disk need be recreated. If the disk cannot be repaired within that duration, the entire contents of the disk might be recreated on one or more other disks in the group.