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is one of my raid hds is dying?
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DaggyStyle
Watchman
Watchman


Joined: 22 Mar 2006
Posts: 5413

PostPosted: Tue Apr 30, 2019 2:17 pm    Post subject: Reply with quote

NeddySeagoon wrote:
DaggyStyle,

With N drives in a raid set, user data is on N-1 drives and the redundancy is on the other.
Raid5 needs 3 or more drives, since with two drives, the best you can do is raid1.
Raid1 is the degenerate case of raid5.

Provided you do things in the right order and space permits, its possible to change the number of drives in a raid5 set without losing redundancy.

thanks for the info, I'll try to make the switch properly
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