QNAP rackmount NAS come in 1U (4 bays, or 4 + 5 SSD bays), 2U (8 or 12 bays), 3U (16 bays) and 4U (24 bays). Short-depth models (TS-435XEU-4G, TS-464EU-8G, TS-H765EU-8G, TS-864EU-RP-8G, TS-873AEU-4G) are 292 to 297.4 mm deep for shallow comms cabinets; full-depth models (TS-464U-8G, TS-1264U-RP-8G, TS-1273AU-RP-8G, TS-H1277AXU-RP-R5-16G, TS-H1677AXU-RP-R7-32G) suit server racks. Models ending in -RP have two power supplies. The TS-h models ship with QuTS hero (ZFS) and a 5-year warranty.
Quick pick: small office cabinet → TS-435XEU-4G (10GbE built in); 4 bays with dual power → TS-464U-RP-8G; 12 bays → TS-1273AU-RP-8G; ZFS for business data → TS-H1277AXU-RP-R5-16G. ARC IP Networks is an authorised QNAP reseller and supplies genuine QNAP from Australian stock with a GST tax invoice.
QNAP rackmount NAS at a glance
Height, depth and power are the three things to decide first. Every figure here is from QNAP's specification table for the exact variant we sell.
Swipe the table sideways to compare all models →
| Model | Height | Depth | Bays | In one line |
|---|---|---|---|---|
| TS-435XEU-4G | 1U | 292 mm | 4 | Short depth, 2 x 10GbE SFP+ built in, single PSU |
| TS-464EU-8G | 1U | 292 mm | 4 | Short depth, Celeron N5095, 2 x M.2, single PSU |
| TS-H765EU-8G | 1U | 292 mm | 4 + 3 E1.S | Short depth, QuTS hero, DDR5 with in-band ECC |
| TS-464U-8G / -RP | 1U | 479 mm | 4 | Full depth, PCIe slot, single or dual 250W PSU |
| TS-H987XU-RP-E2334-16G | 1U | 479 mm | 4 + 5 U.2/SATA | Xeon, QuTS hero, 2 x 10GbE, dual PSU |
| TS-864EU-RP-8G | 2U | 297.4 mm | 8 | Short depth, dual 300W PSU |
| TS-873AEU-4G / -RP | 2U | 297.4 mm | 8 | Short depth, Ryzen, PCIe Gen3 x8, 2 x M.2 |
| TS-1264U-RP-8G | 2U | 370.7 mm | 12 | Celeron N5095, dual 300W PSU |
| TS-1273AU-RP-8G | 2U | 370.7 mm | 12 | Ryzen, 2 PCIe slots, QTS or QuTS hero |
| TS-H1277AXU-RP-R5-16G / R7 | 2U | 550 mm | 12 | Ryzen 7000, DDR5, 2 x 10GbE, QuTS hero |
| TS-1673AU-RP-16G | 3U | 370.9 mm | 16 | Ryzen, dual 550W PSU |
| TS-H1677AXU-RP-R7-32G | 3U | 550.8 mm | 16 | Ryzen 7 7000, 32GB DDR5, QuTS hero |
| TS-H2477AXU-RP-R7-32G | 4U | 511.7 mm | 24 | Ryzen 7 Pro 7000, dual 800W PSU, QuTS hero |
Depth is QNAP's figure, excluding ear hooks and the protruding part of the PSU where QNAP notes it.
QNAP rackmount NAS specifications compared
The redundant-power (-RP) version is shown where we sell both; the single-PSU siblings are covered further down.
Swipe the table sideways to compare all models →
| Spec | TS-435XEU-4G | TS-464U-RP-8G | TS-864EU-RP-8G | TS-873AEU-RP-4G | TS-1264U-RP-8G | TS-1273AU-RP-8G | TS-H1277AXU-RP-R5-16G | TS-H1677AXU-RP-R7-32G |
|---|---|---|---|---|---|---|---|---|
| Form factor | 1U short depth | 1U | 2U short depth | 2U short depth | 2U | 2U | 2U | 3U |
| Depth | 292.12 mm | 479 mm | 297.4 mm | 297.4 mm | 370.7 mm | 370.7 mm | 550 mm | 550.8 mm |
| Drive bays | 4 x 3.5" | 4 x 3.5" | 8 x 3.5" | 8 x 3.5" | 12 x 3.5" | 12 x 3.5" | 12 x 3.5" | 16 x 3.5" |
| CPU | ARM Cortex-A72 4-core 2.2GHz | Celeron N5095 4-core | Celeron N5095 4-core | Ryzen V1500B 4C/8T | Celeron N5095 4-core | Ryzen V1500B 4C/8T | Ryzen 5 7000 6C/12T | Ryzen 7 7000 8C/16T |
| RAM (max) | 4GB (32GB) | 8GB (16GB) | 8GB (16GB) | 4GB (64GB) | 8GB (16GB) | 8GB (64GB) | 16GB DDR5 (192GB) | 32GB DDR5 (192GB) |
| Network | 2 x 10GbE SFP+, 2 x 2.5GbE | 2 x 2.5GbE | 2 x 2.5GbE | 2 x 2.5GbE | 2 x 2.5GbE | 2 x 2.5GbE | 2 x 10GBASE-T, 2 x 2.5GbE | 2 x 10GBASE-T, 2 x 2.5GbE |
| PCIe | None | 1 x Gen3 x2 | 1 x Gen3 x2 | 1 x Gen3 x8 | 1 x Gen3 x2 | 2 x Gen3 x4 | 3 x Gen4 | 3 x Gen4 |
| M.2 NVMe | 2 x Gen3 x1 | Via PCIe adapter | Via PCIe adapter | 2 x Gen3 x1 | Via PCIe adapter | Via QM2 card | 2 x Gen5 x2 | 2 x Gen5 x2 |
| Power supply | 100W (single) | 250W x 2 | 300W x 2 | 300W x 2 | 300W x 2 | 300W x 2 | 550W x 2 | 550W x 2 |
| Operating system | QTS | QTS 5, supports QuTS hero | QTS 5, supports QuTS hero | QTS or QuTS hero | QTS 5, supports QuTS hero | QTS or QuTS hero | QuTS hero | QuTS hero |
| Rail kit QNAP names | RAIL-S01 | Ask us | Ask us | RAIL-S01 | Ask us | RAIL-B02 | Ask us | Ask us |
| Standard warranty | 3 years | 3 years | 3 years | 3 years | 3 years | 3 years | 5 years | 5 years |
Sources: QNAP hardware specification tables for each exact variant and the QNAP product pages that name a rail kit. "Ask us": QNAP does not name the rail kit in the sources we used, so we confirm it with the order.
1U, 2U, 3U or 4U?
QNAP's 1U models are about 43 to 44 mm tall, and the height you choose mostly decides how many drives fit:
- 1U: four 3.5-inch bays. The TS-H987XU-RP-E2334-16G adds five 2.5-inch U.2 NVMe/SATA SSD bays and the TS-H765EU-8G three E1.S slots, so you get a fast SSD tier without giving up a hard drive bay.
- 2U: eight bays (TS-864EU-RP-8G, TS-873AEU-RP-4G) or twelve (TS-1264U-RP-8G, TS-1273AU-RP-8G, TS-H1277AXU-RP-R5-16G). For most Australian SMBs, 2U is the sweet spot.
- 3U: sixteen bays (TS-1673AU-RP-16G, TS-H1677AXU-RP-R7-32G).
- 4U: twenty-four bays in the TS-H2477AXU-RP-R7-32G.
Leave empty bays for growth; our how much NAS storage guide helps size it.
Short depth: will it fit your comms cabinet?
Many Australian offices, shops and clinics have a wall-mounted comms cabinet rather than a full server rack, and a standard rackmount NAS simply will not fit. QNAP's short-depth "eU" models solve that: the TS-435XEU-4G, TS-464EU-8G and TS-H765EU-8G are about 292 mm deep in 1U, and the TS-864EU-RP-8G and TS-873AEU-4G 297.4 mm in 2U. The TS-1264U-RP-8G, TS-1273AU-RP-8G and TS-1673AU-RP-16G sit in between at 370.7 to 370.9 mm. The TS-464U-8G (479 mm) and the TS-h 2U and 3U models (550 mm) need a proper server rack.
Measure the distance between the front and rear mounting posts, not the cabinet's advertised depth. QNAP makes the same point for its rail kits, and leave room behind for power and network cables.
Redundant power (-RP) or single PSU?
An -RP model has two power supplies, so a failed PSU does not take the NAS down. We sell several pairs:
| Single PSU | Redundant PSU | What changes |
|---|---|---|
| TS-464U-8G: 250W x 1 | TS-464U-RP-8G: 250W x 2 | Same 1U chassis, CPU, RAM and ports |
| TS-873AEU-4G: 250W x 1 | TS-873AEU-RP-4G: 300W x 2 (minimum) | Same 2U short-depth chassis, CPU, RAM and ports |
| TS-435XEU-4G: 100W x 1 | Not available | Short depth 1U |
| TS-H765EU-8G: 150W x 1 | Not available | Short depth 1U, QuTS hero |
PSU ratings from QNAP's specification tables.
The 12-bay and larger rackmount models we list all have dual PSUs. Our suggestion: choose -RP for anything a business depends on, and plug each supply into a different UPS or circuit so one fault cannot take out both. Our NAS UPS guide covers the UPS side.
Rail kits: which one do you need?
Rail kits are sold separately. The ones we stock, and what QNAP says about them:
- RAIL-S01: short-depth rail kit for 1U, 2U and 3U models, for rack-post depths of 126 to 415 mm. QNAP names it for the TS-435XEU-4G, TS-873AEU-4G, TS-873AEU-RP-4G and TS-1673AU-RP-16G.
- RAIL-B02: standard rail kit for 1U and 2U NAS, for front-to-rear post distances of 443 to 815 mm, in 9.5 mm square-hole or 7.1 mm round-hole racks. QNAP names it for the TS-1273AU-RP-8G. QNAP notes that at its shortest setting the rear of the rail sticks out past the rear post, so allow clearance behind the rack.
- RAIL-A03-57: rail kit for 2U and 3U models, for post depths of 579.1 to 873.5 mm; QNAP lists it for the TS-h2490FU all-flash NAS.
For the other models in this guide, QNAP's pages we used do not name a rail kit, so we confirm the right one with your order rather than guess.
Network speed: 2.5GbE, 10GbE and PCIe
Every model here has at least two 2.5GbE ports. The TS-435XEU-4G adds two 10GbE SFP+ ports, and the TS-H1277AXU-RP-R5-16G, TS-H1677AXU-RP-R7-32G, TS-H2477AXU-RP-R7-32G and TS-H987XU-RP-E2334-16G two 10GBASE-T ports. On the others, a PCIe slot takes a 10GbE or 25GbE card; the TS-873AEU-RP-4G has a Gen3 x8 slot and the TS-h models three Gen4 slots. See our 10GbE network card guide and 10GbE switch guide.
QTS or QuTS hero?
The TS-h rackmounts ship with QuTS hero, QNAP's ZFS-based OS, and carry a 5-year warranty in QNAP's spec tables. The TS-464U-RP-8G, TS-864EU-RP-8G and TS-1264U-RP-8G come with QTS 5 and also support QuTS hero; the TS-873AEU-RP-4G and TS-1273AU-RP-8G are listed for either. QuTS hero needs at least 8GB of RAM, so the 4GB TS-873AeU models need a memory upgrade first. Our QTS vs QuTS hero guide explains the trade-offs.
Running out of bays? JBOD expansion
QNAP says the TS-464U-RP-8G, TS-864EU-RP-8G and TS-1264U-RP-8G accept QNAP expansion enclosures, managed in Storage & Snapshots Manager. The TS-h1277AXU-RP, TS-h1677AXU-RP and TS-h2477AXU-RP connect to SAS 12Gb/s, PCIe or SATA expansion units through expansion cards, up to eight 24-bay TL-R2400PES-RP PCIe JBODs for petabyte-scale storage; the TS-H987XU-RP-E2334-16G connects to SATA TL units.
- TL-R1200S-RP: 12-bay 2U SATA JBOD, supplied with its own PCIe SATA card and cables.
- TL-R1200PES-RP: 12-bay 2U PCIe JBOD; needs a QXP-3X8PES or QXP-3X4PES card in the NAS, and cascades to 144 drives.
- TL-R1200C-RP: 12-bay 2U USB 3.2 Gen 2 Type-C JBOD.
Check QNAP's compatibility list for your NAS before ordering, or ask us. Our TR-004 vs TL JBOD guide compares the options.
Which QNAP rackmount NAS for which Australian business?
ARC IP Networks suggestions, based on the specifications above.
| Business | Suggested NAS | Why |
|---|---|---|
| Accounting or law office with a wall cabinet | TS-435XEU-4G + RAIL-S01 | 1U, 292 mm deep, 10GbE built in |
| Medical or dental clinic, imaging and records | TS-873AEU-RP-4G + RAIL-S01 | Short depth, dual PSU, 8 bays, QTS or QuTS hero |
| Retail or hospitality group, CCTV and file backup | TS-1264U-RP-8G | 12 bays, dual PSU |
| School or council IT room with a server rack | TS-1273AU-RP-8G + RAIL-B02 | 12 bays, Ryzen, two PCIe slots |
| Engineering or architecture firm in a regional town | TS-H1277AXU-RP-R5-16G | ZFS, snapshots, 2 x 10GbE, 5-year warranty |
| IT provider hosting client VMs | TS-H1677AXU-RP-R7-32G | 16 bays, 32GB DDR5, QuTS hero |
| Media or survey archive that keeps growing | TS-H2477AXU-RP-R7-32G + TL-R2400PES-RP | 24 bays, PCIe JBOD expansion |
Why buy QNAP from ARC IP Networks
- Authorised QNAP reseller: genuine QNAP sourced through authorised Australian distribution, never grey import.
- Australian stock shipped Australia-wide.
- Manufacturer's warranty and local pre-sales help choosing bays, drives, networking and expansion.
- Every product page backed by QNAP's own specifications, with the exact warranty for each model.
- GST tax invoice on every order, with trade and project pricing for installers and integrators.
See the full range on our QNAP Australia hub, or read where to buy QNAP in Australia. Questions? Call 1300 100 440 or email info@arcip.com.au.
Shop QNAP rackmount NAS and rail kits
Live Australian pricing (inc. GST) and availability are on each product page.
2U, 12 bays, QuTS hero, 2 x 10GbE, 5-year warranty
Common questions
Straight answers from the ARC IP Networks team. Last reviewed October 2026.
Models ending in -RP have two power supplies instead of one. For example, the TS-464U-8G has one 250W PSU and the TS-464U-RP-8G has two.
A rackmount NAS shallow enough for a comms cabinet. QNAP's TS-435XeU, TS-464eU and TS-h765eU are about 292 mm deep in 1U, and the TS-864eU-RP and TS-873AeU 297.4 mm in 2U.
QNAP names RAIL-S01 (126 to 415 mm rack-post depth) for short-depth models such as the TS-435XeU and TS-873AeU, and RAIL-B02 (443 to 815 mm) for models such as the TS-1273AU-RP. For other models we confirm the kit with your order.
A 1U NAS holds four 3.5-inch drives; a 2U NAS holds eight or twelve. Choose 2U if you expect to grow, or a 1U model when rack space is tight.
Yes, with a QNAP expansion unit. The TS-h1277AXU-RP, TS-h1677AXU-RP and TS-h2477AXU-RP connect up to eight TL-R2400PES-RP PCIe JBODs, and models such as the TS-464U-RP accept QNAP expansion enclosures.
The TS-h models ship with QuTS hero. The TS-464U, TS-864eU-RP and TS-1264U-RP ship with QTS 5 and also support QuTS hero, and the TS-873AeU and TS-1273AU-RP are listed for either.
QNAP's specification tables list 3 years for models such as the TS-435XeU, TS-464U-RP and TS-1273AU-RP, and 5 years for the TS-h1277AXU-RP, TS-h1677AXU-RP, TS-h2477AXU-RP and TS-h987XU-RP.
ARC IP Networks is an authorised QNAP reseller and supplies genuine QNAP from Australian stock with a GST tax invoice. Order at arcip.com.au or call 1300 100 440.
Fitting out a rack or comms cabinet?
Send us your rack depth, drive count and how fast your network is. ARC IP Networks will match the QNAP NAS, rail kit and drives, and quote with trade pricing for installers and IT providers. Call 1300 100 440 or email info@arcip.com.au.
Related guides
- Best QNAP NAS in Australia: 2026 buying guide
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- QNAP TR-004 / TR-002 vs TL series: DAS or JBOD expansion?
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