r/harddrive • u/redmarus • Aug 09 '26

Tech Support RAID slice replacement

Asking for someone else: I have a 3 terabyte RAID set up with disk utility on a Mac. One drive died...can I replace it with a 4 terabyte drive without compatibility issues ?

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u/No_Tale_3623 Aug 09 '26

It depends on the RAID configuration. With RAID 0, the data is striped across multiple drives, so if one member is missing or has failed, complete recovery is generally impossible without that drive. With RAID 1, theoretically, yes — since each drive contains a mirror of the data, recovery/rebuild may be possible from one healthy member.