Compatible hard drives for Synology DS725+
39 drives are on Synology's official compatibility list (HCL) for the DS725+, read from synology.com on 2026-10-28. The largest supported drive in this list is 24 TB — that is the practical ceiling for a full DS725+ build.
Where to start
For a home NAS workload, the NAS/Plus lines balance sustained writes and rebuild tolerance over enterprise drive speed you will rarely use:
- Synology HAT3320 20 TB — 20TB available
- Synology HAT3310 16 TB — 16TB available
- Synology HAT3300 12 TB — 12TB available
- Synology HAT3310 12 TB — 12TB available
Full DS725+ compatibility list
Grouped by drive model. "Max" shows the largest capacity Synology lists; multiple sizes are available per model number where listed separately.
| Drive | Brand | Line | Class | Type | Max listed |
|---|---|---|---|---|---|
| HAT5320-24T | Synology | HAT5320 | Enterprise | 3.5" SATA HDD | 24 TB |
| HAT3320-20T | Synology | HAT3320 | Plus | 3.5" SATA HDD | 20 TB |
| HAT5310-20T | Synology | HAT5310 | Enterprise | 3.5" SATA HDD | 20 TB |
| HAT5320-20T | Synology | HAT5320 | Enterprise | 3.5" SATA HDD | 20 TB |
| HAT5310-18T | Synology | HAT5310 | Enterprise | 3.5" SATA HDD | 18 TB |
| HAT3310-16T | Synology | HAT3310 | Plus | 3.5" SATA HDD | 16 TB |
| HAT5300-16T | Synology | HAT5300 | Enterprise | 3.5" SATA HDD | 16 TB |
| HAT5310-16T | Synology | HAT5310 | Enterprise | 3.5" SATA HDD | 16 TB |
| HAT3300-12T | Synology | HAT3300 | Plus | 3.5" SATA HDD | 12 TB |
| HAT3310-12T | Synology | HAT3310 | Plus | 3.5" SATA HDD | 12 TB |
| HAT5300-12T | Synology | HAT5300 | Enterprise | 3.5" SATA HDD | 12 TB |
| HAT3300-8T | Synology | HAT3300 | Plus | 3.5" SATA HDD | 8 TB |
| HAT3310-8T | Synology | HAT3310 | Plus | 3.5" SATA HDD | 8 TB |
| HAT3320-8T | Synology | HAT3320 | Plus | 3.5" SATA HDD | 8 TB |
| HAT5300-8T | Synology | HAT5300 | Enterprise | 3.5" SATA HDD | 8 TB |
| HAT5310-8T | Synology | HAT5310 | Enterprise | 3.5" SATA HDD | 8 TB |
| HAT5320-8T | Synology | HAT5320 | Enterprise | 3.5" SATA HDD | 8 TB |
| SAT5210-7000G | Synology | SAT5210 | Enterprise | 2.5" SATA SSD | 7 TB |
| HAT3300-6T | Synology | HAT3300 | Plus | 3.5" SATA HDD | 6 TB |
| HAT3300-4T | Synology | HAT3300 | Plus | 3.5" SATA HDD | 4 TB |
| HAT5300-4T | Synology | HAT5300 | Enterprise | 3.5" SATA HDD | 4 TB |
| HAT5320-4T | Synology | HAT5320 | Enterprise | 3.5" SATA HDD | 4 TB |
| SAT5200-3840G | Synology | SAT5200 | Enterprise | 2.5" SATA SSD | 3.84 TB |
| SAT5210-3840G | Synology | SAT5210 | Enterprise | 2.5" SATA SSD | 3.84 TB |
| SAT5220-3840G | Synology | SAT5220 | Enterprise | 2.5" SATA SSD | 3.84 TB |
| SAT5221-3840G | Synology | SAT5221 | Enterprise | 2.5" SATA SSD | 3.84 TB |
| HAT3300-2T | Synology | HAT3300 | Plus | 3.5" SATA HDD | 2 TB |
| SAT5200-1920G | Synology | SAT5200 | Enterprise | 2.5" SATA SSD | 1.92 TB |
| SAT5210-1920G | Synology | SAT5210 | Enterprise | 2.5" SATA SSD | 1.92 TB |
| SAT5220-1920G | Synology | SAT5220 | Enterprise | 2.5" SATA SSD | 1.92 TB |
| SAT5221-1920G | Synology | SAT5221 | Enterprise | 2.5" SATA SSD | 1.92 TB |
| SAT5200-960G | Synology | SAT5200 | Enterprise | 2.5" SATA SSD | 960 GB |
| SAT5210-960G | Synology | SAT5210 | Enterprise | 2.5" SATA SSD | 960 GB |
| SAT5220-960G | Synology | SAT5220 | Enterprise | 2.5" SATA SSD | 960 GB |
| SAT5221-960G | Synology | SAT5221 | Enterprise | 2.5" SATA SSD | 960 GB |
| SAT5200-480G | Synology | SAT5200 | Enterprise | 2.5" SATA SSD | 480 GB |
| SAT5210-480G | Synology | SAT5210 | Enterprise | 2.5" SATA SSD | 480 GB |
| SAT5220-480G | Synology | SAT5220 | Enterprise | 2.5" SATA SSD | 480 GB |
| SAT5221-480G | Synology | SAT5221 | Enterprise | 2.5" SATA SSD | 480 GB |
For a full 24TB+ build on DS725+
Enterprise lines (Seagate Exos, WD Ultrastar, Toshiba MG) are the only drives listed at the top of the capacity range. They are built for RAID duty and 7200RPM sustained writes — what a full-bay DS725+ actually needs: