The exact factory configuration matters
This page covers TS-855X-8G-US, mapped to the official TS-855X-8G hardware table. CPU: Intel ® Atom® C5125 8-core processor, 2.8GHz. Factory memory: 8 GB non-ECC UDIMM DDR4.[1]
QNAP · NAS buying guide
QNAP TS-855X-8G NAS Buying Guide
Product facts and dated cost
QNAP TS-855X-8G · Exact identity: TS-855X-8G-US
8 primary bays · Atom C5125 · 8GB · 1 × 10GbE + 2 × 2.5GbE · Diskless: hard drives cost extra
Catalog amount: $1,549 · recent · Price record: 2026-10-09T03:57:04.857875+00:00. Tax and shipping excluded.
Price observed at the store on the shown date. Confirm the current price and availability at the store.
TS-855X-8G: specifications and dated store comparison →A six-HDD plus two-SSD hybrid business NAS with built-in 10GBASE-T and substantial expansion capacity.
Exact US MPN TS-855X-8G-US; official hardware table TS-855X-8G; 8 GB non-ECC UDIMM DDR4; 6 x 3.5-inch + 2 x 2.5-inch SATA 6Gb/s, 3Gb/s.
Based on the current QNAP specification tables and 1 applicable original review. We have not tested this NAS ourselves. The hardware-page software tables are QTS 5.2.9 / QuTS hero h5.2.9 (version-bound). TS-855X is listed in Applicable Models on the separate QuTS hero h6.0.2.3591 notes dated 2026-08-24; that listing is not the h5.2.9 feature table. See the review evidence ↓
Is the TS-855X-8G right for you?
10GbE business backup and file service
A six-HDD plus two-SSD hybrid business NAS with built-in 10GBASE-T and substantial expansion capacity.[1]
Tiered or cached hybrid storage
Plan the array and client path around 10GbE: 1 x 10GBASE-T (10G/5G/2.5G/1G/100M); 2.5GbE: 2 (2.5G/1G/100M/10M).[4]
Key specifications
Full specifications ↗Follow any specification for its full conditions and sources.
Living with it
Hardware, storage and network planning
Plan storage and networking together
Storage: 6 x 3.5-inch + 2 x 2.5-inch SATA 6Gb/s, 3Gb/s. Connectivity: 10GbE: 1 x 10GBASE-T (10G/5G/2.5G/1G/100M); 2.5GbE: 2 (2.5G/1G/100M/10M). Advertised port speed is not a guarantee for one file transfer; drive count, RAID, protocol, client and switch can each become the limit.[1]
Read measured results with their setup
Dave Mitchell tested factory 8GB QTS with four 20TB WD DC HC560 in RAID5. Iometer sequential 9.3/9.2 Gbit/s; 25GB copies 5.7/4.8; 10,500-file backup 2.3; encrypted 25GB also 2.3 Gbit/s at ~25% CPU. iSCSI sequential 9.3/9, random writes 0.6 until two 480GB Kingston NVMe as mirrored cache raised random writes to 3.5/3.4 Gbit/s. QuTS hero was not tested: 16GB is the article’s dedupe floor and 32GB its 10GbE performance advice, not a claim that 8GB cannot install QuTS. CyberQ’s later long-term TS-855X piece used 64GB RAM (4×16GB) and six ST4000VN006 in RAID-Z2 — related, not this 8GB SKU. CyberQ mixes measured experience with proposed storage layouts and does not disclose a repeatable 1.1 GB/s test method; that figure is not a factory-8GB benchmark.[4][1][5]
What original testing found
Our buying advice combines official specifications with the original reviews below. We have not tested this product ourselves. Expand a review for its setup, measurements and limitations.
IT Pro
Dave MitchellJul 5, 2023
IT Pro 8GB QTS 10GbE RAID5
Dave Mitchell tested factory 8GB QTS with four 20TB WD DC HC560 in RAID5. Iometer sequential 9.3/9.2 Gbit/s; 25GB copies 5.7/4.8; 10,500-file backup 2.3; encrypted 25GB also 2.3 Gbit/s at ~25% CPU. iSCSI sequential 9.3/9, random writes 0.6 until two 480GB Kingston NVMe as mirrored cache raised random writes to 3.5/3.4 Gbit/s. QuTS hero was not tested: 16GB is the article’s dedupe floor and 32GB its 10GbE performance advice, not a claim that 8GB cannot install QuTS.
Read the original reviewTest setup, measurements & limitations
Qnap TS-855X review: A speedy hybrid desktop NAS
Tested: Exact 8GB TS-855X; four 20TB WD DC HC560 HDDs in RAID5; QTS; Dell PowerEdge T640 Windows Server 2019 client; later two 480GB Kingston NVMe SSDs as mirrored cache.
Applies to: Exact TS-855X-8G.
- Factory 8GB QTS, four 20TB WD DC HC560 RAID5 (55.4TB pool), Dell T640 WS2019, single 10GbE.Source location: Deployment and 10GbE performance sections
- QuTS hero: article says upgrade from base 8GB; 16GB minimum for deduplication; 32GB to get the best from 10GbE. That is not “8GB cannot install QuTS”. Official hardware page lists QuTS hero.Source location: Opening OS paragraphs and verdict
| Measurement | Result | Conditions & source location |
|---|---|---|
| Iometer NAS sequential | 9.3 / 9.2 Gbit/s read/write | Mapped share, 10GbE, RAID5 four HC560, QTS 8GB.10GbE performance |
| 25GB file copy | 5.7 / 4.8 Gbit/s | Drag-and-drop.Real-world speeds |
| 22.4GB / 10,500-file backup | 2.3 Gbit/s | Small-file folder.backup test |
| Encrypted 25GB copy | 2.3 Gbit/s, CPU ~25% | Encrypted share.encrypted share |
| 1TB iSCSI sequential | 9.3 / 9 Gbit/s | IP SAN.IP SANs |
| iSCSI/NAS random | 9.2 Gbit/s read / 0.6 Gbit/s write | Before cache.random operations |
| Random writes with mirrored NVMe cache | NAS 3.5 / iSCSI 3.4 Gbit/s | Two 480GB Kingston NVMe as mirrored cache.QTS caching feature |
Limits to keep in mind
- SSD cache model beyond 480GB Kingston NVMe not further specified; QTS build unstated.
- QuTS hero was not the OS under test.
- Do not read the RAM advice as a ban on installing QuTS on 8GB.
Common HDD combinations
Examples ordered by recorded drive unit price, which may be historical or an editorial reference. Check capacity, vendor compatibility, included storage and price evidence before choosing. These are component checks, not compatibility certifications.
- TS-855X-8G + 2 × WD Red Plus 2TB (WD20EFPX, 2TB each) →
Component total: $1,858.98 · historical · Oldest price record: 2026-10-09T01:23:41.974420+00:00 · 4TB raw, before redundancy.
Historical price estimate. Calculated from separately purchased components, not a complete-system offer. NAS price record: 2026-10-09T03:57:04.857875+00:00; drive price record: 2026-10-09T01:23:41.974420+00:00. Price observed at the store on the shown date. Confirm the current price and availability at the store. Historical price observation. Recheck the price and availability before buying; this is not a current offer. Recheck component prices, stock, shipping and tax at the stores before purchase; even recent checks do not guarantee live prices.
- TS-855X-8G + 2 × IronWolf 4TB (ST4000VN006, 4TB each) →
Component total: $1,928.98 · recent · Oldest price record: 2026-10-09T03:57:04.857875+00:00 · 8TB raw, before redundancy.
Dated price estimate. Calculated from separately purchased components, not a complete-system offer. NAS price record: 2026-10-09T03:57:04.857875+00:00; drive price record: 2026-10-09T03:58:24.994342+00:00. Price observed at the store on the shown date. Confirm the current price and availability at the store. Price observed at the store on the shown date. Confirm the current price and availability at the store. Recheck component prices, stock, shipping and tax at the stores before purchase; even recent checks do not guarantee live prices.
- TS-855X-8G + 2 × WD Red Plus 4TB (WD40EFZZ, 4TB each) →
Component total: $1,938.98 · historical · Oldest price record: 2026-09-27T13:58:17.239646+00:00 · 8TB raw, before redundancy.
Historical price estimate. Calculated from separately purchased components, not a complete-system offer. NAS price record: 2026-10-09T03:57:04.857875+00:00; drive price record: 2026-09-27T13:58:17.239646+00:00. Price observed at the store on the shown date. Confirm the current price and availability at the store. Historical price observation. Recheck the price and availability before buying; this is not a current offer. Recheck component prices, stock, shipping and tax at the stores before purchase; even recent checks do not guarantee live prices.
- TS-855X-8G + 6 × WD Red Plus 2TB (WD20EFPX, 2TB each) →
Component total: $2,478.94 · historical · Oldest price record: 2026-10-09T01:23:41.974420+00:00 · 12TB raw, before redundancy.
Historical price estimate. Calculated from separately purchased components, not a complete-system offer. NAS price record: 2026-10-09T03:57:04.857875+00:00; drive price record: 2026-10-09T01:23:41.974420+00:00. Price observed at the store on the shown date. Confirm the current price and availability at the store. Historical price observation. Recheck the price and availability before buying; this is not a current offer. Recheck component prices, stock, shipping and tax at the stores before purchase; even recent checks do not guarantee live prices.
- TS-855X-8G + 6 × IronWolf 4TB (ST4000VN006, 4TB each) →
Component total: $2,688.94 · recent · Oldest price record: 2026-10-09T03:57:04.857875+00:00 · 24TB raw, before redundancy.
Dated price estimate. Calculated from separately purchased components, not a complete-system offer. NAS price record: 2026-10-09T03:57:04.857875+00:00; drive price record: 2026-10-09T03:58:24.994342+00:00. Price observed at the store on the shown date. Confirm the current price and availability at the store. Price observed at the store on the shown date. Confirm the current price and availability at the store. Recheck component prices, stock, shipping and tax at the stores before purchase; even recent checks do not guarantee live prices.
Before you buy
US listings and ownership costs
Budget the complete storage system
Include compatible drives, an independent backup destination, network upgrades, cables and any UPS or expansion cards required by the workload.[1]
Treat listings as dated evidence
Amazon/Newegg numeric rows keep their original 2026-09-10T01:06:35+00:00 observation times. The QNAP Store row is the historical 2026-09-10 identity-qualified listing with unknown price and stock; a later cookies-disabled Magento extract was not used as a live US offer. Recheck the live page before buying.[2][3]
Compare stores for this exact model
Exact US MPN TS-855X-8G-US; official hardware table TS-855X-8G; 8 GB non-ECC UDIMM DDR4; 6 x 3.5-inch + 2 x 2.5-inch SATA 6Gb/s, 3Gb/s. Check the total delivered price at the store.
Lowest observed price
$1,549
In stock at observation
Currency not confirmed
2 stores · 2 recent price observations
Amazon
Sold by Amazon.com
$1,549
Observed price
Currency not confirmed
In stock at observation · Condition not recorded
Observed Oct 9, 2026, 3:57:04 AM UTC[6]
View exact product at AmazonQNAP Store
Sold by QNAP Inc.
$1,549
Observed price
Currency not confirmed
Out of stock at observation · Condition not recorded
Observed Oct 9, 2026, 3:54:33 AM UTC[7]
View exact product at QNAP StorePrices are dated observations. Confirm the model, seller, condition, stock and delivered total at the store. Older prices remain visible as history. Links may earn a commission.
Questions before buying
Which TS-855X-8G configuration does this page cover?
It covers the exact US MPN TS-855X-8G-US. The selected official hardware-table heading is TS-855X-8G.[1][2][3]
Are drives included?
The official hardware table describes the platform. Store bundles can change, so confirm the exact seller listing and included drives or accessories before ordering.[1][2][3]
What network connection should I plan for?
The selected official configuration lists 10GbE: 1 x 10GBASE-T (10G/5G/2.5G/1G/100M); 2.5GbE: 2 (2.5G/1G/100M/10M). A client, switch, cabling, protocol and storage array must all support the intended speed.[1]
Has ChooseCompute tested this NAS?
No. This guide synthesizes QNAP documentation and 1 applicable original review; each external result keeps its tested setup and limitations.[4]
Is the listed price current?
Amazon/Newegg numeric rows keep their original 2026-09-10T01:06:35+00:00 observation times. The QNAP Store row is the historical 2026-09-10 identity-qualified listing with unknown price and stock; a later cookies-disabled Magento extract was not used as a live US offer. Recheck the live page before buying.[2][3]
Sources
Research updated Sep 11, 2026. Individual source check dates are listed below. Measurements belong to the named reviewers; tested configurations and software versions may differ from the product you buy.
- [1] QNAP TS-855X-8G current hardware and software tables ↗
Checked Sep 11, 2026 · Hardware table heading 'TS-855X-8G'; all shared QTS/QuTS hero tables present in the same opened HTML response.
- [2] Amazon TS-855X-8G-US product page ↗
Checked Sep 10, 2026 · Page title 'Amazon.com: QNAP TS-855X-8G-US 8 Bay NAS | High-Performance, 8-core, 10GbE, Hybrid-Infrastructure Storage and High-Speed Virtualization Applications, Diskless : Musical Instruments'; exact MPN present in the opened response. Primary NEW buy box; seller Amazon.com; USD 1549.00; availability in-stock.
- [3] QNAP Store TS-855X-8G-US product page ↗
Checked Sep 10, 2026 · Page title 'TS-855X-8G-US'; exact MPN present in the opened response. Exact US MPN in the opened manufacturer-store PDP; current price and stock were not asserted. 2026-09-11 Magento extract had cookies disabled and was not used as a live US offer.
- [4] Qnap TS-855X review: A speedy hybrid desktop NAS ↗
Checked Sep 10, 2026 · Original review configuration, performance/results and conclusion sections; limitations retained in the review record.
- [5] 長期實測 QNAP TS-855X — CyberQ ↗
Checked Sep 11, 2026 · 4×16GB=64GB; 6× ST4000VN006 RAID-Z2; Patriot P300 512GB pair; ~1.1 GB/s 10GbE claim with L2ARC. Linked from TS-673A article footer.
- [6] Amazon product price observation ↗
Checked Oct 9, 2026 · Captured observation; sha256:46e11a3244f0e27781e0a55081ffc2b6c68615dcdef4932dd7f74457e95d1bb1
- [7] QNAP product price observation ↗
Checked Oct 9, 2026 · Captured observation; sha256:7f8a76e1c818675094e0e59fdb1f99a35298ceeea3811d290ff1cc7c5f9fe341
Research and review record
- Research: Grok 4.6 · Source research and data update
- Self-check: Grok 4.6 · Researcher self-check
- Independent review: GPT-6 (Codex) · Independent core hardware verification, full available original article text and recorded chart review; inherited historical quotes retain dates. Software matrices remain bound to the captured QTS/QuTS version and are not an exhaustive latest-build compatibility test. Unavailable original reviews and videos remain explicit gaps.
- Editorial integration: GPT-6 (Codex) · Editorial integration and validation
Independent review completed for the scope recorded in the audit.
Source evidence and review history (JSON)