How to expand RAID 5 capacity in WD MYCLOUD DL4100


Hi, we have a WD MYCLOUD DL4100 with 3 x 6TB NAS drives configured in RAID 5. As the current RAID5 volume capacity is almost hit its ceiling with 7% remaining. We would like to increase the volume capacity with another 6TB NAS WD RED drive installed on the 4th bay. The firmware has been upgraded to the latest version. So how and what should we do to expand the RAID5 capacity on the fly without jeopardizing data integrity and to avoid downtime? Thanks in advance anyone for the relevant advice.


Hi Psalm3745,

Maybe you should try contacting WD’s Technical Support about this.

To Contact WD for Technical Support

The link below will allow you to call support.


Brandon - that was not very helpful!
what’s the point of a community board, only to have you tell someone to “CALL SUPPORT” or “CREATE A TICKET”

You should have this answered and can’d.
Paste your answer, or point the user to a Knowledge Base answer.