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Can I dynamically change a “3-drive RAID level 5 device” to “4-drive RAID level 5 device” without loosing my existing data?

April 26, 2017Data dynamically existing loosing

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Can I dynamically change a “3-drive RAID level 5 device” to “4-drive RAID level 5 device” without loosing my existing data?

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No, you have to un-group the existing “3-drive RAID level 5 device” first and then create a new “4-drive RAID level 5 device”. It means that the data stored in the old RAID device will be lost permanently. Dynamically changing the configuration of the RAID device will cause data lost.