Immich appears to be using external HDD storage, but uses internal storage

UUID=62f70a9c-bfba-48a2-9bd6-8c4ab211df75    /mnt/immich_storage    ext4    defaults,user,noatime    0    0
UUID=277e481e-770c-46ad-88ec-afa879b912fd    /mnt/immich_storage_backup    ext4    defaults,user,noatime    0    0

lsblk -f
NAME FSTYPE FSVER LABEL               UUID                                 FSAVAIL FSUSE% MOUNTPOINTS
sda                                                                                       
|-sda1
|    ext4   1.0                       6c578386-a2e3-46ab-a769-10d4b1516116       0    97% /
|-sda2
|                                                                                         
`-sda5
     swap   1                         65057df0-a9fa-4813-881c-d5dbc0bd97fb                [SWAP]
sdb  ext4   1.0                       62f70a9c-bfba-48a2-9bd6-8c4ab211df75    3.4T     0% /mnt/immich_storage
sdc  ext4   1.0                       277e481e-770c-46ad-88ec-afa879b912fd    3.4T     0% /mnt/immich_storage_backup

drwxr-xr-x  4 root root 4096 Aug 10 19:28 .
drwxr-xr-x 18 root root 4096 Aug  9 16:25 ..
drwxrwxrwx  8 root root 4096 Aug 10 20:31 immich_storage
drwxrwxrwx  3 root root 4096 Aug 10 17:27 immich_storage_backup

# The location where your uploaded files are stored
UPLOAD_LOCATION=/mnt/immich_storage