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RAID5 Expansion
I am currently in the process of expanding my RAID5 volume from 4 x 3 TB drives to 4 x 6TB drives. The 3rd drive has been added but I have not seen it go ONLINE in the logs yet but it displays as ONLINE on the System page. The volume is still syncing. Is it too soon to upgrade the 4th drive or do I have to wait for the process to finish? I am hoping it will remain a RAID5 volume and not change to a RAID6 volume.
Wait for resyncing to complete. If you remove a drive too early you will lose your data.
You now have two RAID groups on the 6 TB disks (the original 4x3 TB group, and a new 2 TB group). Both need to sync.
Data_Dan wrote:
I am hoping it will remain a RAID5 volume and not change to a RAID6 volume.
That never happens with vertical expansion. And the threshold for horizontal expansion is higher than 4 drives.
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Here is the System page showing the drive is ONLINE.
Wait for resyncing to complete. If you remove a drive too early you will lose your data.
You now have two RAID groups on the 6 TB disks (the original 4x3 TB group, and a new 2 TB group). Both need to sync.
Data_Dan wrote:
I am hoping it will remain a RAID5 volume and not change to a RAID6 volume.
That never happens with vertical expansion. And the threshold for horizontal expansion is higher than 4 drives.
Thanks!
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