Trying to rename existing filespace filespace-name to
new filespace filespace-name, but drive letters
do not match, old=drive-letter, new=drive-letter.
Ignore the old filespace and backup to the new filespace.
Explanation
Trying to rename the existing filespace name using the volume label
to the UNC format naming convention but the drive letters do not match.
Leave the existing filespace alone and create a new filespace.