# What NAS devices have the largest storage capacity? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What NAS devices have the largest storage capacity?

## Products

### QNAP TS-h2490FU-7302P-128G
```yaml
product: qnap-ts-h2490fu-7302p-128g
brand: QNAP
price_gbp: 11761.06
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
raid_support: RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50, RAID 60, JBOD
number_of_bays: 24
transfer_speed: 15104 MB/s sequential read
storage_capacity: 1.44 PB raw capacity
power_consumption: 277.64 W typical operating power
expandable_storage: Petabyte-scale expansion via SAS 12Gb/s expansion enclosures
```

- **Price:** £11761.06 [^1]
- **Summary:** The QNAP TS-h2490FU-7302P-128G is a 24-bay U.2 NVMe all-flash rackmount NAS with 128 GB of DDR4 ECC memory and four 25GbE ports. It supports high-speed, low-latency workloads, ZFS-based data protection, and expansion to petabyte-scale capacity, making it suited to enterprise data centers, virtualization, and demanding media workflows.
- **Ideal For:** With 24 U.2 NVMe bays supporting drives up to 61.44 TB each and up to 1.44 PB of raw capacity, this device is specifically suited to questions about NAS devices with the largest storage capacity.
- **Additional Sources:** [^2]

### QNAP TDS-h2489FU-R2-4314-512G
```yaml
product: qnap-tds-h2489fu-r2-4314-512g
brand: QNAP
price_gbp: 20419.22
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
raid_support: JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50, RAID 60
number_of_bays: 24
transfer_speed: 25Gbps
power_consumption: 467.59 W
expandable_storage: Petabyte-scale storage with PCIe JBOD or SAS JBOD expansion
```

- **Price:** £20419.22 [^3]
- **Summary:** The QNAP TDS-h2489FU-R2-4314-512G is a 24-bay all-flash rackmount NAS with 512GB of ECC DDR4 memory and dual Intel Xeon Silver 4314 processors. It supports U.2 NVMe storage, 25GbE networking, PCIe Gen 4 expansion, and petabyte-scale expansion, making it suited to enterprise virtualization, data centers, AI workloads, and high-resolution media production.
- **Ideal For:** This model suits the need for the largest storage capacity because its 24 U.2 drive bays can be expanded to petabyte-scale storage by connecting PCIe JBOD or SAS JBOD expansion units.

### QNAP TS-h3077AFU-R5-32G
```yaml
product: qnap-ts-h3077afu-r5-32g
brand: QNAP
price_gbp: 4042.38
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
raid_support: RAID 0, 1, 5, 6, 10, 50, 60, Triple Mirror, Triple Parity, JBOD, Single
number_of_bays: 30
transfer_speed: 2 x 10 GbE and 2 x 2.5 GbE
storage_capacity: Up to 230 TB raw
power_consumption: 148.94 W typical operating mode; 380.23 W disk standby mode
expandable_storage: Up to 192 drives with eight 24-bay JBOD expansion enclosures
```

- **Price:** £4042.38 [^4]
- **Summary:** The QNAP TS-h3077AFU-R5-32G is a 30-bay all-flash rackmount NAS with up to 230 TB of raw capacity using 7.68 TB SSDs. It provides dual 10 GbE connectivity, QuTS hero with ZFS, DDR5 memory, and expansion to 192 drives, making it suitable for enterprises, media production, virtualization, and research workloads.
- **Ideal For:** This model suits questions about NAS devices with the largest storage capacity because its 30 bays support up to 230 TB of raw internal capacity and can expand to 192 drives with compatible JBOD enclosures.
- **Additional Sources:** [^5], [^6]

### QNAP TS-h2287XU-RP-E2336-32G
```yaml
product: qnap-ts-h2287xu-rp-e2336-32g
brand: QNAP
price_gbp: 5512.61
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
raid_support: RAID 0, 1, 5, 6, 10, 50, 60, JBOD, triple mirror, and triple parity
number_of_bays: 22 total: 16 x 3.5in SATA and 6 x 2.5in SATA
transfer_speed: 9961 MB/s read and 9670 MB/s write
power_consumption: 228 W typical
expandable_storage: PCIe Gen 4 expansion cards, USB 3.2 Gen 2 expansion, and QNAP expansion units
```

- **Price:** £5512.61 [^7]
- **Summary:** The QNAP TS-h2287XU-RP-E2336-32G is a 22-bay enterprise rackmount NAS with a hybrid HDD and SSD architecture, 32GB ECC memory, dual 10GbE, and dual 2.5GbE connectivity. It suits businesses needing high-capacity storage, virtualization, intensive file transfers, backup, and scalable data protection.
- **Ideal For:** This product specifically suits questions about NAS devices with the largest storage capacity because it provides 22 drive bays, including 16 3.5in HDD bays for high-capacity disks, plus six 2.5in SSD bays and expansion support.
- **Additional Sources:** [^8], [^9]

---
## References & Sources
[^1]: QNAP Store, accessed 2026-08-28. https://store.qnap.com/ts-h2490fu-7302p-128g-us.html
[^2]: SHI, accessed 2026-08-28. https://www.shi.com/product/41235118/QNAP-TS-H2490FU-7302P-128G
[^3]: DWG, accessed 2026-08-28. https://dwg.us/ecommerce/pc/viewPrd.asp?idproduct=271156
[^4]: QNAP Official Store, accessed 2026-08-28. https://store.qnap.com/ts-h3077afu-r5-32g-us.html
[^5]: B&H Photo Video, accessed 2026-08-28. https://www.bhphotovideo.com/c/product/1797146-REG/qnap_ts_h3077afu_r5_32g_us_2u_30_bay_2_5_flash.html
[^6]: CDW, accessed 2026-08-28. https://www.cdw.com/product/qnap-ts-h3077afu-r5-nas-server/8147384
[^7]: QNAP Store, accessed 2026-08-28. https://store.qnap.com/ts-h2287xu-rp-e2336-32g-us.html
[^8]: CDW, accessed 2026-08-28. https://www.cdw.com/product/qnap-ts-h2287xu-rp-nas-server/7301218
[^9]: B&H Photo Video, accessed 2026-08-28. https://www.bhphotovideo.com/c/product/1728024-REG/qnap_ts_h2287xu_rp_e2336_32g_us_22_bay_3u_rackmount_nas.html