You need two more 3.5-inch drive slots in your ST45 V3 and you don't want to be sourcing mismatched cages that don't line up with the internal rails. This is the Lenovo ISG cage kit for exactly that job — two bays, 3.5" drives, made for the ST45 V3. Pop it in, seat your drives, and you've got the capacity headroom without a second server or an external DAS box on the bench
| brand | LENOVO ISG |
| category | SERVERS |
| subcategory | LENOVO HDD |
| drive_bay_count | 2 |
| drive_size_inch | 3.5 |
| compatible_model | Lenovo ThinkSystem ST45 V3 |