← Back to the full Synology NAS list
Which should I buy: DS923+ or DS925+?
Buy the DS923+ if you want 10GbE (via the E10G22-T1-Mini card) or the broadest certified-drive list; otherwise the newer DS925+ is the better long-term buy, with a faster CPU and 2.5GbE built in.
The DS923+ is a 2022 model in phase-out, so the question is really "is the 10GbE slot worth buying last year's NAS?" For a video-editing workstation or anyone moving multi-terabyte datasets, yes. For everyone else the DS925+ is faster on CPU, has 2.5GbE without a card, and will be supported longer.
Who each model suits
- DS923+ - creators editing off the NAS over 10GbE; anyone with an existing DX517 expansion unit; buyers who want WD/Seagate drives on the official HCL (127 certified drives).
- DS925+ - home and small-office use on 1GbE/2.5GbE networks, more containers or users (4 cores vs 2), and a longer DSM support runway.
- Used DS923+ - the value option: used units are common and the hardware is simple (two SODIMM slots, swappable drives, no fan quirks). Check the ECC memory shows in DSM and the PCIe slot cover is present.
What it costs to populate the bays
- Four certified 8 TB drives: about $1,200 new (Western Digital WD80EFPX) or $800 used. Four 16 TB: about $2,360 new.
- Add roughly $150 for the E10G22-T1-Mini 10GbE module if that is the reason you are buying it.
- Unit price on eBay: new from n/a, used from $520 (4 listings). New stock is thin because of the phase-out, which is why used pricing often wins.
Constraints that could change the decision
- No 2.5GbE on board: two 1GbE ports only. Without the 10GbE card the DS925+ is more than twice as fast on the wire.
- CPU: Ryzen R1600, 2 cores / 4 threads, no hardware transcoding. Fine for file serving and Surveillance Station; not for many simultaneous Plex transcodes.
- Memory: 4 GB ECC installed, 32 GB max across two SODIMM slots; Synology D4ES modules are the certified ones.
- NVMe: two M.2 slots for cache; NVMe storage pools need Synology SNV3400-series drives.
- Expansion: eSATA DX517 to 9 bays total. The DS925+ moved to the USB-C DX525, so the enclosures are not interchangeable.
Full side-by-side: DS923+ vs DS925+.
Buying assessment (not hands-on tested) by Joshua Haug · updated 2026-11-07 · evidence: Synology spec pages and HCL, DSM 7.3 drive policy (Oct 2025), eBay prices checked 2026-11-08 · Specs and compatibility evidence below
Status: Legacy / discontinued
A 4-bay tower NAS for small businesses, home offices and enthusiasts. The AMD Ryzen R1600 and ECC memory up to 32 GB handle multiple users, and you can grow to 9 bays with a DX517 expansion unit. It's a solid all-rounder in the 4-bay class.
| Series | x23 Series |
|---|---|
| Bays | 4 |
| CPU | AMD Ryzen R1600 |
| Cores / Threads | 2 / 4 |
| RAM | 4 GB |
| CPU architecture | x86_64 |
| Support tier | full |
| Warranty (years) | 3 |
| Release year | 2022 |
| RAID levels | Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, SHR |
| PCIe slot types | 1x PCIe Gen 3 x2 |
| RAM (max) | 32 GB |
| Memory slots | 2 |
| Memory generation | DDR4 |
| Memory speed (MT/s) | 2400 MT/s |
| ECC memory | Supported |
| Memory module type | SODIMM |
| Replaceable memory | Replaceable |
| Network ports | 2x 1GbE |
| USB ports | 2x USB 3.2 |
| PCIe expansion | 1 |
| M.2 slots | 2 |
| Drive bay types | 3.5" SATA HDD, 2.5" SATA HDD, 2.5" SATA SSD |
| Hot-swappable bays | Yes |
| CPU frequency (GHz) | 2.6 |
| Power draw, active (W) | 35.51 |
| Power draw, hibernation (W) | 11.52 |
| 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 (Western Digital WD80EFPX) / about $800 used (Synology HAT5310-8T) -- 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 $2,360 new (Seagate ST16000VE000) / about $2,796 refurbished (Seagate ST16000VN001) / about $1,540 used (Seagate ST16000VE000) -- one observed eBay unit price incl. shipping x bays; quantity availability unverified |
4 eBay listings checked Nov 8, 2026 · 1 new, 3 used (too few new listings to show a reliable new price)
Documents
Compatible network and expansion cards
Check the required OS, firmware, slot, bracket, and installation notes before buying.
| Component | Specifications | Evidence | Requirements and notes | Buy |
|---|---|---|---|---|
| Synology E10G22-T1-Mini | Connector: RJ45; Host interface: PCIe 3.0 x2; Ports: 1 x 10GbE | Officially certified Checked 2026-10-17 | APM version requirement: 1.0-71430 or later version. (Only applicable to models with APM.); DSM version requirement: 7.1.1-42962 Update 4 or later version. (Only applicable to models with DSM.) | Amazon eBay |
Compatible Drives
127 drives certified on DS923+'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.
127certified models
4drive brands
24 TBlargest listed
112with 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 TB21
10 TB10
12 TB13
14 TB9
16 TB7
18 TB1
20 TB3
24 TB1
Show all 127 certified drives
127 shown
| Brand | Model | Capacity | Type | Verified drive details | Recently observed offers | Status | Firmware |
|---|---|---|---|---|---|---|---|
| Synology | HAT5320-24T details | 24.0 TB | 3.5" NAS HDD | 7200 RPM · 1024 MB cache · CMR · 550 TB/year workload · 2500000 h MTBF · 5-year warranty | New: $1,440.78 | Recommended | 1401 |
| Synology | HAT5310-20T details | 20.0 TB | 3.5" Enterprise HDD | 7200 RPM · 512 MB cache · CMR · 550 TB/year workload · 2500000 h MTBF · 5-year warranty | New: $899.95 · Used: $1,451.11 | Recommended | 1401 |
| Synology | HAT3320-20T details | 20.0 TB | 3.5" NAS HDD | 7200 RPM · 1024 MB cache · CMR · 180 TB/year workload · 1200000 h MTBF · 3-year warranty | New: $806.19 · Used: $780.00 | Recommended | 1401 |
| Synology | HAT5320-20T details | 20.0 TB | 3.5" NAS HDD | 7200 RPM · 1024 MB cache · CMR · 550 TB/year workload · 2500000 h MTBF · 5-year warranty | New: $1,407.45 | Recommended | 1402 |
| Synology | HAT5310-18T details | 18.0 TB | 3.5" Enterprise HDD | 7200 RPM · 512 MB cache · CMR · 550 TB/year workload · 2500000 h MTBF · 5-year warranty | No recent verified offer | Recommended | 1401 |
| Toshiba | MN08ACA16T details | 16.0 TB | 3.5" NAS HDD | 7200 RPM · 512 MB cache · 180 TB/year workload · 1200000 h MTBF | No recent verified offer | Recommended | 0601 |
| Seagate | ST16000VN001 details | 16.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $605.00 · Refurb: $699.00 | Recommended | SC60 |
| Synology | HAT5300-16T details | 16.0 TB | 3.5" Enterprise HDD | 7200 RPM · 512 MB cache · CMR · 550 TB/year workload · 2500000 h MTBF · 5-year warranty | New: $789.97 · Used: $399.00 | Recommended | 1402 |
| Toshiba | HDWG31G*ZSTA details | 16.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Synology | HAT5310-16T details | 16.0 TB | 3.5" Enterprise HDD | 7200 RPM · 512 MB cache · CMR · 550 TB/year workload · 2500000 h MTBF · 5-year warranty | New: $1,047.99 | Recommended | 1403 |
| Seagate | ST16000VE000 details | 16.0 TB | 3.5" Surveillance HDD | 7200 RPM · 256 MB cache · CMR · 550 TB/year workload · 2500000 h MTBF · 5-year warranty | New: $589.95 · Used: $385.00 | Recommended | EV02 |
| Synology | HAT3310-16T details | 16.0 TB | 3.5" NAS HDD | 7200 RPM · 512 MB cache · CMR · 180 TB/year workload · 1200000 h MTBF · 3-year warranty | New: $693.99 · Used: $505.00 | Recommended | 1402 |
| Toshiba | MN07ACA14T details | 14.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · 180 TB/year workload · 1000000 h MTBF | No recent verified offer | Recommended | 0601 |
| Western Digital | WD140EFGX details | 14.0 TB | 3.5" NAS HDD | 7200 RPM · 512 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | No recent verified offer | Recommended | 85.00A85 |
| Toshiba | HDWG21EEZSTA details | 14.0 TB | 3.5" NAS HDD | 3-year warranty | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG21EYZSTA details | 14.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Seagate | ST14000VE0008 details | 14.0 TB | 3.5" Surveillance HDD | 7200 RPM · 256 MB cache · CMR · 550 TB/year workload · 2000000 h MTBF · 5-year warranty | New: $434.84 | Recommended | EV02 |
| Toshiba | HDWG21EXZSTA details | 14.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG21EUZSVA details | 14.0 TB | 3.5" NAS HDD | 7200 RPM · CMR · 180 TB/year workload | No recent verified offer | Recommended | 0601 |
| Seagate | ST14000VN0008 details | 14.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $435.23 · Used: $349.99 | Recommended | SC60 |
| Toshiba | HDWG21EAZSTA details | 14.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Seagate | ST12000VN0008 details | 12.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $413.88 · Used: $387.02 | Recommended | SC60 |
| Western Digital | WD120EFBX details | 12.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | No recent verified offer | Recommended | 85.00A85 |
| Synology | HAT5300-12T details | 12.0 TB | 3.5" Enterprise HDD | 7200 RPM · 256 MB cache · CMR · 550 TB/year workload · 2500000 h MTBF · 5-year warranty | New: $589.99 · Used: $379.99 | Recommended | 1401 |
| Synology | HAT3300-12T details | 12.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | No recent verified offer | Recommended | PL01 |
| Toshiba | HDWG21CYZSTA details | 12.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Seagate | ST12000VE0008 details | 12.0 TB | 3.5" Surveillance HDD | 7200 RPM · 256 MB cache · CMR · 550 TB/year workload · 2000000 h MTBF · 5-year warranty | New: $458.16 | Recommended | EV02 |
| Toshiba | HDWG21CAZSTA details | 12.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Western Digital | WD121PURZ details | 12.0 TB | 3.5" Surveillance HDD | 7200 RPM · 256 MB cache · CMR · 360 TB/year workload · 1500000 h MTBF · 3-year warranty | Used: $349.99 | Recommended | 81.H0A80 |
| Toshiba | HDWG21CEZSTA details | 12.0 TB | 3.5" NAS HDD | 3-year warranty | No recent verified offer | Recommended | 0601 |
| Toshiba | MN07ACA12T details | 12.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | Used: $1,082.45 | Recommended | 0601 |
| Synology | HAT3310-12T details | 12.0 TB | 3.5" NAS HDD | 7200 RPM · 512 MB cache · CMR · 180 TB/year workload · 1200000 h MTBF · 3-year warranty | New: $465.00 | Recommended | 1402 |
| Toshiba | HDWG21CXZSTA details | 12.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG21CUZSVA details | 12.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG11AAZSTA details | 10.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0603 |
| Toshiba | HDWG11AEZSTA details | 10.0 TB | 3.5" NAS HDD | 3-year warranty | No recent verified offer | Recommended | 0603 |
| Western Digital | WD101EFBX details | 10.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | No recent verified offer | Recommended | 85.00A85 |
| Seagate | ST10000VN000 details | 10.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $497.83 | Recommended | SC60 |
| Seagate | ST10000VE0008 details | 10.0 TB | 3.5" Surveillance HDD | 7200 RPM · 256 MB cache · CMR · 550 TB/year workload · 2000000 h MTBF · 5-year warranty | New: $410.00 · Used: $249.99 | Recommended | EV02 |
| Toshiba | MN06ACA10T details | 10.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | No recent verified offer | Recommended | 0603 |
| Toshiba | HDWG11AUZSVA details | 10.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | Used: $326.00 | Recommended | 0603 |
| Western Digital | WD102PURZ details | 10.0 TB | 3.5" Surveillance HDD | 7200 RPM · 256 MB cache · CMR · 360 TB/year workload · 1500000 h MTBF · 3-year warranty | Used: $416.09 | Recommended | 81.00A82 |
| Toshiba | HDWG11AYZSTA details | 10.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0603 |
| Toshiba | HDWG11AXZSTA details | 10.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | No recent verified offer | Recommended | 0603 |
| Toshiba | HDWG480YZSTA details | 8.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Synology | HAT3320-8T details | 8.0 TB | 3.5" NAS HDD | 7200 RPM · 512 MB cache · CMR · 300 TB/year workload · 1200000 h MTBF · 3-year warranty | New: $644.82 | Recommended | 1401 |
| Western Digital | WD80EFZZ details | 8.0 TB | 3.5" NAS HDD | 5640 RPM · 128 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $349.00 | Recommended | 81.00A81 |
| Seagate | ST8000VX004 details | 8.0 TB | 3.5" Surveillance HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $349.87 | Recommended | AV01 |
| Western Digital | WD82EJRX details | 8.0 TB | 3.5" Surveillance HDD | 7200 RPM · 256 MB cache · 360 TB/year workload · 3-year warranty | No recent verified offer | Recommended | 82.00A82 |
| Western Digital | WD82PURZ details | 8.0 TB | 3.5" Surveillance HDD | 7200 RPM · 256 MB cache · CMR · 360 TB/year workload · 1500000 h MTBF · 3-year warranty | New: $620.00 · Used: $228.00 | Recommended | 82.00A82 |
| Toshiba | HDWG480AZSTA details | 8.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Synology | HAT3310-8T details | 8.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1200000 h MTBF · 3-year warranty | New: $405.00 · Used: $295.00 | Recommended | 1403 |
| Synology | HAT5310-8T details | 8.0 TB | 3.5" Enterprise HDD | 7200 RPM · 256 MB cache · CMR · 550 TB/year workload · 2500000 h MTBF · 5-year warranty | New: $1,035.21 · Used: $199.99 | Recommended | 1402 |
| Synology | HAT5320-8T details | 8.0 TB | 3.5" NAS HDD | 7200 RPM · 512 MB cache · CMR · 550 TB/year workload · 2000000 h MTBF · 5-year warranty | New: $702.17 | Recommended | 1401 |
| Synology | HAT3300-8T details | 8.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | Used: $299.99 | Recommended | PL01 |
| Western Digital | WD82PURX details | 8.0 TB | 3.5" Surveillance HDD | 256 MB cache · CMR · 360 TB/year workload · 3-year warranty | No recent verified offer | Recommended | 82.00A82 |
| Toshiba | HDWG480XZSTA details | 8.0 TB | 3.5" NAS HDD | 7200 RPM · 512 MB cache · CMR · 180 TB/year workload · 1200000 h MTBF · 3-year warranty | No recent verified offer | Recommended | 0601 |
| Seagate | ST8000VN002 details | 8.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $390.64 | Recommended | SC60 |
| Western Digital | WD82EVRX details | 8.0 TB | 3.5" Surveillance HDD | - | No recent verified offer | Recommended | 82.00A82 |
| Western Digital | WD80EFPX details | 8.0 TB | 3.5" NAS HDD | 5640 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $299.95 · Used: $637.75 | Recommended | 81.00A81 |
| Seagate | ST8000VN004 details | 8.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $329.99 | Recommended | SC60 |
| Toshiba | MN08ADA800 details | 8.0 TB | 3.5" NAS HDD | 256 MB cache · 1000000 h MTBF | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG480UZSVA details | 8.0 TB | 3.5" NAS HDD | 256 MB cache · CMR | No recent verified offer | Recommended | 0601 |
| Synology | HAT5300-8T details | 8.0 TB | 3.5" Enterprise HDD | 7200 RPM · 256 MB cache · CMR · 550 TB/year workload · 2500000 h MTBF · 5-year warranty | New: $1,009.00 · Used: $225.00 | Recommended | 1401 |
| Toshiba | HDWG480EZSTA details | 8.0 TB | 3.5" NAS HDD | 3-year warranty | No recent verified offer | Recommended | 0601 |
| Synology | SAT5210-7000G details | 7.0 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 10000 TBW | New: $7,496.33 | Recommended | SCEMH5.0 |
| Toshiba | HDWG460AZSTA details | 6.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG460EZSTA details | 6.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG460UZSVA details | 6.0 TB | 3.5" NAS HDD | 256 MB cache · CMR · 3-year warranty | No recent verified offer | Recommended | 0601 |
| Synology | HAT3300-6T details | 6.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $326.49 · Used: $211.00 | Recommended | PL01 |
| Western Digital | WD60EFPX details | 6.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $315.04 | Recommended | 81.00A81 |
| Seagate | ST6000VN006 details | 6.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $212.58 | Recommended | SC60 |
| Toshiba | MN08ADA600 details | 6.0 TB | 3.5" NAS HDD | 256 MB cache · 1000000 h MTBF | No recent verified offer | Recommended | 0601 |
| Seagate | ST6000VN001 details | 6.0 TB | 3.5" Enterprise HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $218.61 | Recommended | SC60 |
| Western Digital | WD60PURX details | 6.0 TB | 3.5" Surveillance HDD | 7200 RPM · 64 MB cache · CMR · 180 TB/year workload · 1500000 h MTBF · 3-year warranty | New: $299.99 · Refurb: $169.99 | Recommended | 80.00A80 |
| Toshiba | HDWG460YZSTA details | 6.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Seagate | ST6000VX001 details | 6.0 TB | 3.5" Surveillance HDD | 5900 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $249.99 · Refurb: $275.00 | Recommended | CV11 |
| Western Digital | WD60PURZ details | 6.0 TB | 3.5" Surveillance HDD | 5700 RPM · 64 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $310.00 · Refurb: $189.99 | Recommended | 80.00A80 |
| Western Digital | WD60EFZX details | 6.0 TB | 3.5" NAS HDD | 5640 RPM · 128 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $300.00 · Used: $552.29 | Recommended | 81.00A81 |
| Toshiba | HDWG460XZSTA details | 6.0 TB | 3.5" NAS HDD | 7200 RPM · 512 MB cache · CMR · 180 TB/year workload · 1200000 h MTBF · 3-year warranty | No recent verified offer | Recommended | 0601 |
| Western Digital | WD60EJRX details | 6.0 TB | 3.5" Surveillance HDD | 5400 RPM · 64 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | No recent verified offer | Recommended | - |
| Toshiba | HDWG440YZSTA details | 4.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Western Digital | WD40PURX details | 4.0 TB | 3.5" Surveillance HDD | 5400 RPM · 64 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $136.00 · Refurb: $139.99 | Recommended | 80.00A80 |
| Western Digital | WD40PURZ details | 4.0 TB | 3.5" Surveillance HDD | 5400 RPM · 64 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $139.58 · Used: $108.00 | Recommended | - |
| Synology | HAT3300-4T details | 4.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $351.38 · Used: $175.00 | Recommended | PL01 |
| Synology | HAT5300-4T details | 4.0 TB | 3.5" Enterprise HDD | 7200 RPM · 256 MB cache · CMR · 550 TB/year workload · 2000000 h MTBF · 5-year warranty | No recent verified offer | Recommended | 1403 |
| Toshiba | HDWG440AZSTA details | 4.0 TB | 3.5" NAS HDD | - | No recent verified offer | Recommended | 0601 |
| Toshiba | HDWG440UZSVA details | 4.0 TB | 3.5" NAS HDD | 256 MB cache · CMR | No recent verified offer | Recommended | 0601 |
| Western Digital | WD40EFPX details | 4.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $133.98 | Recommended | 81.00A81 |
| Seagate | ST4000VN006 details | 4.0 TB | 3.5" NAS HDD | 5400 RPM · 64 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $161.57 · Used: $159.99 | Recommended | SC60 |
| Toshiba | HDWG440EZSTA details | 4.0 TB | 3.5" NAS HDD | 3-year warranty | No recent verified offer | Recommended | 0601 |
| Toshiba | MN08ADA400E details | 4.0 TB | 3.5" NAS HDD | 256 MB cache · 1000000 h MTBF | No recent verified offer | Recommended | 0601 |
| Synology | HAT5320-4T details | 4.0 TB | 3.5" NAS HDD | 7200 RPM · 512 MB cache · CMR · 550 TB/year workload · 2000000 h MTBF · 5-year warranty | New: $577.10 | Recommended | 1401 |
| Toshiba | HDWG440XZSTA details | 4.0 TB | 3.5" NAS HDD | 7200 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | No recent verified offer | Recommended | 0601 |
| Western Digital | WD40EFZX details | 4.0 TB | 3.5" NAS HDD | 5400 RPM · 128 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $138.50 · Used: $275.00 | Recommended | 81.00B81 |
| Western Digital | WD40EJRX details | 4.0 TB | 3.5" Surveillance HDD | 5400 RPM · 64 MB cache · CMR · 180 TB/year workload · 1500000 h MTBF · 3-year warranty | New: $134.32 | Recommended | - |
| Synology | SAT5220-3840G details | 3.84 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 7000 TBW | No recent verified offer | Recommended | SCEMH5.0 |
| Synology | SAT5200-3840G details | 3.84 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 9162 TBW | No recent verified offer | Recommended | SCEMJ2.1 |
| Synology | SAT5221-3840G details | 3.84 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 7000 TBW | New: $2,642.47 | Recommended | SCEM16.3 |
| Synology | SAT5210-3840G details | 3.84 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 8533 TBW | No recent verified offer | Recommended | SCEMH3.2 |
| Western Digital | WD30EFZX details | 3.0 TB | 3.5" NAS HDD | 5400 RPM · 128 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $92.71 | Recommended | 81.00B81 |
| Western Digital | WD30PURZ details | 3.0 TB | 3.5" Surveillance HDD | 5400 RPM · 64 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $358.17 · Used: $79.00 | Recommended | - |
| Seagate | ST3000VX009 details | 3.0 TB | 3.5" Surveillance HDD | 5900 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $129.90 · Used: $69.99 | Recommended | CV11 |
| Western Digital | WD30EFPX details | 3.0 TB | 3.5" NAS HDD | 64 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $457.98 · Used: $339.47 | Recommended | 81.00A81 |
| Seagate | ST3000VN006 details | 3.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $288.30 | Recommended | SC60 |
| Western Digital | WD30EJRX details | 3.0 TB | 3.5" Surveillance HDD | 5400 RPM · 64 MB cache · CMR · 180 TB/year workload · 3-year warranty | No recent verified offer | Recommended | - |
| Western Digital | WD30PURX details | 3.0 TB | 3.5" Surveillance HDD | 7200 RPM · 64 MB cache · CMR · 180 TB/year workload · 1500000 h MTBF · 3-year warranty | New: $83.48 · Used: $69.00 | Recommended | - |
| Western Digital | WD20EFZX details | 2.0 TB | 3.5" NAS HDD | 5400 RPM · 128 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $167.76 · Used: $268.52 | Recommended | 81.00B81 |
| Western Digital | WD20PURZ details | 2.0 TB | 3.5" Surveillance HDD | 5400 RPM · 64 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $84.63 · Used: $70.29 | Recommended | - |
| Seagate | ST2000VN003 details | 2.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $280.64 · Used: $178.17 | Recommended | SC60 |
| Western Digital | WD20PURX details | 2.0 TB | 3.5" Surveillance HDD | 7200 RPM · 64 MB cache · CMR · 180 TB/year workload · 1500000 h MTBF · 3-year warranty | New: $82.56 · Used: $78.15 | Recommended | - |
| Western Digital | WD20EJRX details | 2.0 TB | 3.5" Surveillance HDD | 5400 RPM · 64 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $83.07 · Refurb: $79.99 | Recommended | - |
| Synology | HAT3300-2T details | 2.0 TB | 3.5" NAS HDD | 5400 RPM · 256 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $677.05 · Used: $139.99 | Recommended | PL01 |
| Western Digital | WD20EFPX details | 2.0 TB | 3.5" NAS HDD | 5400 RPM · 64 MB cache · CMR · 180 TB/year workload · 1000000 h MTBF · 3-year warranty | New: $227.87 · Used: $265.25 | Recommended | 81.00A81 |
| Synology | SAT5210-1920G details | 1.92 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 4800 TBW | No recent verified offer | Recommended | SCEMH3.2 |
| Synology | SAT5220-1920G details | 1.92 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 3500 TBW | New: $799.99 | Recommended | SCEMH5.0 |
| Synology | SAT5221-1920G details | 1.92 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 3500 TBW | New: $2,200.01 · Refurb: $2,272.83 | Recommended | SCEM16.3 |
| Synology | SAT5200-1920G details | 1.92 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 4581 TBW | No recent verified offer | Recommended | SCEMJ2.1 |
| Seagate | ST1000VN008 details | 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 details | 0.96 TB | 2.5" Enterprise SSD | 2048 MB cache · 1500000 h MTBF · 5-year warranty · 2290 TBW | No recent verified offer | Recommended | SCEMJ2.1 |
| Synology | SAT5210-960G details | 0.96 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 2194 TBW | New: $489.00 | Recommended | SCEMH3.2 |
| Synology | SAT5221-960G details | 0.96 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 1700 TBW | New: $1,177.29 | Recommended | F3MN902 |
| Synology | SAT5220-960G details | 0.96 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 1700 TBW | No recent verified offer | Recommended | SCEMH5.0 |
| Synology | SAT5220-480G details | 0.48 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 900 TBW | No recent verified offer | Recommended | SCEMH5.0 |
| Synology | SAT5210-480G details | 0.48 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 1097 TBW | No recent verified offer | Recommended | SCEMH3.2 |
| Synology | SAT5221-480G details | 0.48 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 900 TBW | No recent verified offer | Recommended | F3MN902 |
| Synology | SAT5200-480G details | 0.48 TB | 2.5" Enterprise SSD | 1500000 h MTBF · 5-year warranty · 1145 TBW | 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
5 memory modules listed by Synology as compatible with DS923+. Third-party modules may also work, but are not shown here unless Synology itself lists them as compatible.
5certified modules
4–16 GBcapacity range
| SKU | Capacity | DDR generation | ECC | Form factor | Rated speed | Warranty | Source and notes | Buy |
|---|---|---|---|---|---|---|---|---|
| D4ES01-16G | 16 GB | DDR4 | ECC | SODIMM | - | 5-year | Manufacturer source Checked 2026-09-16 | Amazon eBay |
| D4ES03-16G | 16 GB | DDR4 | ECC | SODIMM | - | 5-year | Manufacturer source Checked 2026-09-16 | Amazon eBay |
| D4ES02-8G | 8 GB | DDR4 | ECC | SODIMM | - | 5-year | Manufacturer source Checked 2026-09-16 | Amazon eBay |
| D4ES03-8G | 8 GB | DDR4 | ECC | SODIMM | - | 5-year | Manufacturer source Checked 2026-09-16 | Amazon eBay |
| D4ES02-4G | 4 GB | DDR4 | ECC | SODIMM | - | 5-year | Manufacturer source Checked 2026-09-16 | Amazon eBay |
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.