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Status: Legacy / discontinued
| Series | x23 Series |
|---|---|
| Bays | 4 |
| CPU | Intel Celeron J4125 |
| Cores / Threads | 4 / 4 |
| RAM | 2 GB |
| CPU architecture | x86_64 |
| Support tier | full |
| Warranty (years) | 3 |
| RAM (max) | 6 GB |
| Memory slots | 1 |
| Memory generation | DDR4 |
| ECC memory | Non-ECC |
| Replaceable memory | Replaceable |
| Network ports | 2x 1GbE |
| USB ports | 2x USB 3.2 Gen 1 |
| M.2 slots | 2 |
| Drive bay types | 3.5" SATA HDD, 2.5" SATA SSD, M.2 NVMe SSD |
| Hot-swappable bays | yes |
| Largest certified configuration observed | 96 TB (4 x Synology HAT5320-24T, largest drive on the vendor HCL today; not a hardware limit) |
| Estimated cost to fill every bay with a certified 8 TB drive | about $1,200 new (Seagate ST8000VN004) / about $1,180 used (Synology HAT3310-8T) -- one observed eBay unit price incl. shipping x bays; quantity availability unverified |
| Estimated cost to fill every bay with a certified 16 TB drive | about $2,000 new (Seagate ST16000VE000) / about $2,796 refurbished (Seagate ST16000VN001) / about $1,560 used (Seagate ST16000VE000) -- one observed eBay unit price incl. shipping x bays; quantity availability unverified |
1 eBay listings checked Aug 8, 2026 · 0 new, 1 used (too few used listings to show a reliable used price)
Documents
Compatible Drives
119 drives certified on DS423+'s official manufacturer compatibility list, sourced directly from Synology's own published Hardware Compatibility List. Each model links to that drive's own compatibility page.
119certified models
4drive brands
24 TBlargest listed
44with verified extra specs
Certified drives by capacity
0.48 TB4
0.96 TB4
1 TB1
1.92 TB4
2 TB7
3 TB7
3.84 TB4
4 TB15
6 TB15
7 TB1
8 TB17
10 TB9
12 TB12
14 TB9
16 TB5
18 TB1
20 TB3
24 TB1
Show all 119 certified drives
119 shown
| Brand | Model | Capacity | Type | Verified drive details | Recently observed offers | Status | Firmware |
|---|---|---|---|---|---|---|---|
| Synology | HAT5320-24T | 24.0 TB | 3.5" NAS HDD | - | New: $1,418.86 | Recommended | 1401 |
| Synology | HAT5310-20T | 20.0 TB | 3.5" NAS HDD | - | New: $1,168.25 · Used: $1,484.45 | Recommended | 1401 |
| Synology | HAT3320-20T | 20.0 TB | 3.5" NAS HDD | - | New: $950.91 | Recommended | 1401 |
| Synology | HAT5320-20T | 20.0 TB | 3.5" NAS HDD | - | New: $1,496.66 | Recommended | 1402 |
| Synology | HAT5310-18T | 18.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 1401 |
| Seagate | ST16000VN001 | 16.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $587.99 · Refurb: $699.00 | Recommended | SC60 |
| Synology | HAT5300-16T | 16.0 TB | 3.5" NAS HDD | - | New: $1,551.00 · Used: $417.72 | Recommended | 1402 |
| Synology | HAT5310-16T | 16.0 TB | 3.5" NAS HDD | - | New: $1,100.33 | Recommended | 1403 |
| Seagate | ST16000VE000 | 16.0 TB | 3.5" Surveillance HDD | - | New: $499.99 · Used: $390.00 | Recommended | EV02 |
| Synology | HAT3310-16T | 16.0 TB | 3.5" NAS HDD | - | New: $599.00 | Recommended | 1402 |
| Toshiba | MN07ACA14T | 14.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Western Digital | WD140EFGX | 14.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 85.00A85 |
| Toshiba | HDWG21EEZSTA | 14.0 TB | 3.5" NAS HDD | 3-year warranty | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG21EYZSTA | 14.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Seagate | ST14000VE0008 | 14.0 TB | 3.5" Surveillance HDD | 256 MB cache | New: $435.84 | Recommended | EV02 |
| Toshiba | HDWG21EXZSTA | 14.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG21EUZSVA | 14.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Seagate | ST14000VN0008 | 14.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $434.00 · Used: $358.07 | Recommended | SC60 |
| Toshiba | HDWG21EAZSTA | 14.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Seagate | ST12000VN0008 | 12.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $397.00 · Used: $299.99 | Recommended | SC60 |
| Western Digital | WD120EFBX | 12.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 85.00A85 |
| Synology | HAT5300-12T | 12.0 TB | 3.5" NAS HDD | - | New: $589.99 · Used: $286.00 | Recommended | 1401 |
| Synology | HAT3300-12T | 12.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | PL01 |
| Toshiba | HDWG21CYZSTA | 12.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Seagate | ST12000VE0008 | 12.0 TB | 3.5" Surveillance HDD | 256 MB cache | New: $440.00 | Recommended | EV02 |
| Toshiba | HDWG21CAZSTA | 12.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG21CEZSTA | 12.0 TB | 3.5" NAS HDD | 3-year warranty | No recent verified offer | Recommended | 0601 |
| Toshiba | MN07ACA12T | 12.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Synology | HAT3310-12T | 12.0 TB | 3.5" NAS HDD | - | New: $530.49 | Recommended | 1402 |
| Toshiba | HDWG21CXZSTA | 12.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG21CUZSVA | 12.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG11AAZSTA | 10.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0603 |
| Toshiba | HDWG11AEZSTA | 10.0 TB | 3.5" NAS HDD | 3-year warranty | No recent verified offer | Recommended | 0603 |
| Western Digital | WD101EFBX | 10.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 85.00A85 |
| Seagate | ST10000VN000 | 10.0 TB | 3.5" NAS HDD | - | New: $414.00 | Recommended | SC60 |
| Seagate | ST10000VE0008 | 10.0 TB | 3.5" Surveillance HDD | 256 MB cache | New: $410.00 | Recommended | EV02 |
| Toshiba | MN06ACA10T | 10.0 TB | 3.5" NAS HDD | - | New: $348.77 | Recommended | 0603 |
| Toshiba | HDWG11AUZSVA | 10.0 TB | 3.5" NAS HDD | 3-year warranty | Used: $360.34 | Recommended | 0603 |
| Toshiba | HDWG11AYZSTA | 10.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0603 |
| Toshiba | HDWG11AXZSTA | 10.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0603 |
| Toshiba | HDWG480YZSTA | 8.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Synology | HAT3320-8T | 8.0 TB | 3.5" NAS HDD | - | New: $657.99 | Recommended | 1401 |
| Western Digital | WD80EFZZ | 8.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 81.00A81 |
| Seagate | ST8000VX004 | 8.0 TB | 3.5" Surveillance HDD | 3-year warranty | New: $349.86 | Recommended | AV01 |
| Toshiba | HDWG480AZSTA | 8.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Synology | HAT3310-8T | 8.0 TB | 3.5" NAS HDD | - | New: $4,392.35 · Used: $295.00 | Recommended | 1403 |
| Synology | HAT5310-8T | 8.0 TB | 3.5" NAS HDD | - | New: $1,087.71 · Used: $500.00 | Recommended | 1402 |
| Synology | HAT5320-8T | 8.0 TB | 3.5" NAS HDD | - | New: $702.17 | Recommended | 1401 |
| Synology | HAT3300-8T | 8.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | PL01 |
| Toshiba | HDWG480XZSTA | 8.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Seagate | ST8000VN002 | 8.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · 1000000 h MTBF · 3-year warranty | New: $390.64 | Recommended | SC60 |
| Western Digital | WD80EFPX | 8.0 TB | 3.5" NAS HDD | CMR | New: $314.99 | Recommended | 81.00A81 |
| Seagate | ST8000VN004 | 8.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $299.99 | Recommended | SC60 |
| Toshiba | MN08ADA800 | 8.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG480UZSVA | 8.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Synology | HAT5300-8T | 8.0 TB | 3.5" NAS HDD | - | New: $1,046.00 · Used: $399.99 | Recommended | 1401 |
| Toshiba | HDWG480EZSTA | 8.0 TB | 3.5" NAS HDD | 3-year warranty | No recent verified offer | Recommended | 0601 |
| Synology | SAT5210-7000G | 7.0 TB | 2.5" Enterprise SSD | 5-year warranty | New: $7,671.71 | Recommended | SCEMH5.0 |
| Toshiba | HDWG460AZSTA | 6.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG460EZSTA | 6.0 TB | 3.5" NAS HDD | 3-year warranty | New: $575.00 | Recommended | 0601 |
| Toshiba | HDWG460UZSVA | 6.0 TB | 3.5" NAS HDD | 3-year warranty | No recent verified offer | Recommended | 0601 |
| Synology | HAT3300-6T | 6.0 TB | 3.5" NAS HDD | - | New: $305.99 · Used: $211.00 | Recommended | PL01 |
| Western Digital | WD60EFPX | 6.0 TB | 3.5" NAS HDD | CMR | New: $279.99 · Used: $535.73 | Recommended | 81.00A81 |
| Seagate | ST6000VN006 | 6.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · 1000000 h MTBF · 3-year warranty | New: $209.98 | Recommended | SC60 |
| Toshiba | MN08ADA600 | 6.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Seagate | ST6000VN001 | 6.0 TB | 3.5" NAS HDD | - | New: $205.99 | Recommended | SC60 |
| Western Digital | WD60PURX | 6.0 TB | 3.5" Surveillance HDD | - | New: $299.99 · Refurb: $179.99 | Recommended | 80.00A80 |
| Toshiba | HDWG460YZSTA | 6.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Seagate | ST6000VX001 | 6.0 TB | 3.5" Surveillance HDD | - | Used: $95.00 | Recommended | CV11 |
| Western Digital | WD60PURZ | 6.0 TB | 3.5" Surveillance HDD | 3-year warranty | New: $310.00 · Refurb: $189.99 | Recommended | 80.00A80 |
| Western Digital | WD60EFZX | 6.0 TB | 3.5" NAS HDD | - | New: $300.00 · Used: $557.93 | Recommended | 81.00A81 |
| Toshiba | HDWG460XZSTA | 6.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Western Digital | WD60EJRX | 6.0 TB | 3.5" Surveillance HDD | - | No recent verified offer | Recommended | - |
| Toshiba | HDWG440YZSTA | 4.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Western Digital | WD40PURX | 4.0 TB | 3.5" Surveillance HDD | - | New: $135.28 · Used: $137.99 | Recommended | 80.00A80 |
| Western Digital | WD40PURZ | 4.0 TB | 3.5" Surveillance HDD | 5400 RPM · 64 MB cache · 3-year warranty | New: $152.56 · Used: $249.00 | Recommended | - |
| Synology | HAT3300-4T | 4.0 TB | 3.5" NAS HDD | - | New: $372.09 | Recommended | PL01 |
| Synology | HAT5300-4T | 4.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 1403 |
| Toshiba | HDWG440AZSTA | 4.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG440UZSVA | 4.0 TB | 3.5" NAS HDD | - | Used: $225.00 | Recommended | 0601 |
| Western Digital | WD40EFPX | 4.0 TB | 3.5" NAS HDD | CMR | New: $138.50 | Recommended | 81.00A81 |
| Seagate | ST4000VN006 | 4.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · 1000000 h MTBF · 3-year warranty | New: $154.95 · Used: $140.00 | Recommended | SC60 |
| Toshiba | HDWG440EZSTA | 4.0 TB | 3.5" NAS HDD | 3-year warranty | New: $353.71 | Recommended | 0601 |
| Toshiba | MN08ADA400E | 4.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Synology | HAT5320-4T | 4.0 TB | 3.5" NAS HDD | - | New: $511.08 | Recommended | 1401 |
| Toshiba | HDWG440XZSTA | 4.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Western Digital | WD40EFZX | 4.0 TB | 3.5" NAS HDD | - | New: $138.50 · Used: $275.00 | Recommended | 81.00B81 |
| Western Digital | WD40EJRX | 4.0 TB | 3.5" Surveillance HDD | 5400 RPM · 64 MB cache | New: $132.62 | Recommended | - |
| Synology | SAT5220-3840G | 3.84 TB | 2.5" Enterprise SSD | - | No recent verified offer | Recommended | SCEMH5.0 |
| Synology | SAT5200-3840G | 3.84 TB | 2.5" Enterprise SSD | - | No recent verified offer | Recommended | SCEMJ2.1 |
| Synology | SAT5221-3840G | 3.84 TB | 2.5" Enterprise SSD | 5-year warranty | New: $1,350.00 | Recommended | SCEM16.3 |
| Synology | SAT5210-3840G | 3.84 TB | 2.5" Enterprise SSD | 5-year warranty | No recent verified offer | Recommended | SCEMH3.2 |
| Western Digital | WD30EFZX | 3.0 TB | 3.5" NAS HDD | 64 MB cache · 3-year warranty | New: $93.89 | Recommended | 81.00B81 |
| Western Digital | WD30PURZ | 3.0 TB | 3.5" Surveillance HDD | 3-year warranty | New: $366.41 · Used: $95.00 | Recommended | - |
| Seagate | ST3000VX009 | 3.0 TB | 3.5" Surveillance HDD | 256 MB cache · 3-year warranty | New: $269.91 · Used: $98.00 | Recommended | CV11 |
| Western Digital | WD30EFPX | 3.0 TB | 3.5" NAS HDD | 5400 RPM · 64 MB cache · CMR · 3-year warranty | New: $446.80 · Used: $342.79 | Recommended | 81.00A81 |
| Seagate | ST3000VN006 | 3.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · 1000000 h MTBF · 3-year warranty | New: $288.30 | Recommended | SC60 |
| Western Digital | WD30EJRX | 3.0 TB | 3.5" Surveillance HDD | 5400 RPM · 64 MB cache · 3-year warranty | No recent verified offer | Recommended | - |
| Western Digital | WD30PURX | 3.0 TB | 3.5" Surveillance HDD | - | New: $84.88 · Refurb: $69.99 | Recommended | - |
| Western Digital | WD20EFZX | 2.0 TB | 3.5" NAS HDD | - | New: $167.76 · Used: $271.07 | Recommended | 81.00B81 |
| Western Digital | WD20PURZ | 2.0 TB | 3.5" Surveillance HDD | 3-year warranty | New: $89.80 · Refurb: $84.99 | Recommended | - |
| Seagate | ST2000VN003 | 2.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · 1000000 h MTBF · 3-year warranty | New: $274.46 | Recommended | SC60 |
| Western Digital | WD20PURX | 2.0 TB | 3.5" Surveillance HDD | - | New: $85.00 · Used: $58.00 | Recommended | - |
| Western Digital | WD20EJRX | 2.0 TB | 3.5" Surveillance HDD | - | New: $84.86 · Refurb: $79.99 | Recommended | - |
| Synology | HAT3300-2T | 2.0 TB | 3.5" NAS HDD | 3-year warranty | New: $574.30 · Used: $149.99 | Recommended | PL01 |
| Western Digital | WD20EFPX | 2.0 TB | 3.5" NAS HDD | - | New: $155.00 · Used: $282.81 | Recommended | 81.00A81 |
| Synology | SAT5210-1920G | 1.92 TB | 2.5" Enterprise SSD | 5-year warranty | New: $999.99 | Recommended | SCEMH3.2 |
| Synology | SAT5220-1920G | 1.92 TB | 2.5" Enterprise SSD | - | No recent verified offer | Recommended | SCEMH5.0 |
| Synology | SAT5221-1920G | 1.92 TB | 2.5" Enterprise SSD | 5-year warranty | New: $2,200.01 · Refurb: $2,325.05 | Recommended | SCEM16.3 |
| Synology | SAT5200-1920G | 1.92 TB | 2.5" Enterprise SSD | - | No recent verified offer | Recommended | SCEMJ2.1 |
| Seagate | ST1000VN008 | 1.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | No recent verified offer | Recommended | SC60 |
| Synology | SAT5200-960G | 0.96 TB | 2.5" Enterprise SSD | - | Used: $75.00 | Recommended | SCEMJ2.1 |
| Synology | SAT5210-960G | 0.96 TB | 2.5" Enterprise SSD | 5-year warranty | No recent verified offer | Recommended | SCEMH3.2 |
| Synology | SAT5221-960G | 0.96 TB | 2.5" Enterprise SSD | 5-year warranty | New: $1,177.29 | Recommended | F3MN902 |
| Synology | SAT5220-960G | 0.96 TB | 2.5" Enterprise SSD | - | No recent verified offer | Recommended | SCEMH5.0 |
| Synology | SAT5220-480G | 0.48 TB | 2.5" Enterprise SSD | - | No recent verified offer | Recommended | SCEMH5.0 |
| Synology | SAT5210-480G | 0.48 TB | 2.5" Enterprise SSD | 5-year warranty | No recent verified offer | Recommended | SCEMH3.2 |
| Synology | SAT5221-480G | 0.48 TB | 2.5" Enterprise SSD | 5-year warranty | New: $794.00 | Recommended | F3MN902 |
| Synology | SAT5200-480G | 0.48 TB | 2.5" Enterprise SSD | - | No recent verified offer | Recommended | SCEMJ2.1 |
Extra drive details are published only from manufacturer-owned documents or explicit human review. Follow the model link for field-level sources.
Certified list last checked 2026-08-18.
Compatible Memory
1 memory module listed by Synology as compatible with DS423+. Third-party modules may also work, but are not shown here unless Synology itself lists them as compatible.
1certified modules
4–4 GBcapacity range
| SKU | Capacity | DDR generation | ECC | Form factor | Rated speed | Warranty | Source and notes |
|---|---|---|---|---|---|---|---|
| D4NS01-4G | 4 GB | DDR4 | Non-ECC | SODIMM | - | 5-year | Manufacturer source Checked 2026-09-16 |
Certified list last checked 2026-09-16. Coverage varies by model. Rated module speed is not a guarantee of NAS operating speed; follow the NAS maximum capacity and installation rules.
Looking for cameras compatible with Synology NAS units? See the full Synology camera compatibility database.