LVM Unable to remove physical volume

Question

Aim: To remove the physical volume from the LVM in order to reformat it.

LVM Setup: 1x 2TB HDD 1x 3TB HDD

Problem: When trying to pvmove, I get an error saying "No extents available for allocation" and when running pvdisplay I get the following:

--- Physical volume --- PV Name /dev/sdb VG Name StorageArray PV Size 2.73 TiB / not usable 3.46 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 715396 Free PE 0 Allocated PE 715396 PV UUID BemunR-U7S2-GoRU-5lTh-ESy2-sS8o-LpmXXr

--- Physical volume --- PV Name /dev/sdc VG Name StorageArray PV Size 1.82 TiB / not usable 1.09 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 476932 Free PE 0 Allocated PE 476932 PV UUID xNhWUT-VrEa-vdLP-c2Cg-mhcF-VHdT-bubG9E

However, none of the harddrives are full, current occupied space is 1.8TB, 2.2TB free.

I was thinking to run lvreduce -L2048TB, however it throws a warning about possibly loosing data.

Does anyone know how i can migrate data to the 2TB HDD, and then remove the 3TB from the LV.

Thanks.