HPE ProLiant uses two-letter prefixes to identify server form factors. Here is the breakdown.
Series Guide
| Prefix | Form Factor | Examples |
|---|---|---|
| DL | Density Line (rack) | DL360, DL380, DL560 |
| ML | Modular Line (tower) | ML30, ML110, ML350 |
| BL | Blade (in c7000 chassis) | BL460c, BL660c |
| XL | Scale-out / HPC | XL170r, XL230a |
Number format: first digit = rack units or socket count. DL3xx = 1U, DL5xx = 2U-4S. Gen suffix = generation (Gen10, Gen11).