Side-by-side specifications of the Synology DS1010+ and DS1019+, from official datasheets. Differences are highlighted.
| DS1010+ | DS1019+ | |
| CPU | 1.67 GHz dual-core | Intel Celeron J3455 |
| Cores / threads | 2 cores / 2 threads | 4 cores / 4 threads |
| RAM (base) | 1 GB DDR2 | 8 GB DDR3L non-ECC |
| RAM (max) | 3 GB | 8 GB |
| Drive bays | 5 | 5 |
| Expandable to | 5 via DX510 | 5 |
| M.2 slots | 0 | 2 M.2 2280 NVMe |
| Network | 2x Gigabit Ethernet | 2 x 1GbE RJ-45 |
| 10GbE | no | no |
| Max raw capacity | 20 TB | 60 TB internal raw; 10 drives with DX517 |
| Hot-swap | yes | yes |
| Form factor | desktop | Desktop |
| Released | 2009 | 2019 |
| Power consumption | 68 W / unknown | 38.59 W / 13.32 W |
| DSM at launch | 2.3 | — |
Choose the DS1019+ unless you specifically need the older DS1010+ for legacy reasons. The DS1019+ has a much newer/faster Celeron CPU, 8 GB RAM max vs the DS1010+’s lower ceiling, 5 bays on both but no real expansion advantage for the 1010+, plus the DS1019+ adds dual M.2 NVMe cache support and optional 10GbE via expansion, while the DS1010+ lacks M.2 and is much weaker overall.