Dear WD Community,
I recently purchased a WD Sentinel DX4000 4TB (WDBLGT0040KBK-21) it is running at RAID 1 and offers 2TB of usable storage. I underestimated the growing demand of storage when I ordered the 4TB-Model. So I purchased 2 new 4TB-drives (WDBYBL0040HNC-EASN or HDS5C4040ALE630). I swapped out 1 drive at a time and let the System repair hoping that the usable storage would grow to 4TB. The next step was to completely rebuild the System (factory reset), however even after the rebuild the sentinel only offered 2TB of usable storage.
Can someone help?