Technical reference

Western Digital WD Red Pro WD6005FFBX 6TB specifications

One retail 6TB 3.5-inch SATA WD6005FFBX. Enclosure and extra drives sold separately.

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Identity & capacity

Exact 6TB air SKU vs WD6003FFBX.

Identity & capacity specifications
Formatted capacity	6TB decimal[1]
Exact model	WD6005FFBX[1]
Previous-generation 6TB column (not this SKU)	WD6003FFBX: 238MB/s, 7.2 W read/write, 3.7 W idle — related only[1] Do not copy WD6003FFBX measurements onto WD6005FFBX.

Interface

3.5-inch SATA 6 Gb/s.

Interface specifications
Form factor / interface	3.5-inch / SATA 6Gb/s[1]
Advanced Format	Yes; logical/physical byte sizes not stated in this brief[1]

Recording & firmware

CMR air, RV yes, OptiNAND no.

Recording & firmware specifications
Recording / drive technology	CMR / Air[1]
Rotational-vibration sensors	Yes[1]
Native command queuing	Yes[1]
OptiNAND	No[1][9] Table cell No. US store Technologies line still lists OptiNAND and ArmorCache for this SKU as family template copy.

Performance

7200 rpm, 256 MB, 267 MB/s table.

Performance specifications
Rotational speed	7,200 rpm[1]
Cache	256 MB[1]
Internal transfer rate, maximum	267 MB/s[1][9] Unresolved official conflict on 2026-09-11: the January 2025 data-sheet column lists 267 MB/s (footnote 3, up to, read-based) while the US store specification block prints a lower figure that is numerically the same as the adjacent previous-generation column. That numerical match is suggestive, not proof of a page-implementation error. Do not average or silently pick one.

NAS support

Unlimited-bay marketing plus TLER copy.

NAS support specifications
Rated bay class	Unlimited # of bays (January 2025 family highlight and 2026-09-11 US store Compatibility line)[1][9] Family positioning; confirm the exact NAS compatibility list. Older WD Red Pro briefs said up to 24 bays. The specification table has no per-column bay-count cell. Unlimited marketing is not a vendor HCL entry. Baseline value “Up to 24 bays” is superseded by the current official surfaces.
Intended operation	24×7 commercial and enterprise NAS[1]
Time-Limited Error Recovery (TLER)	Claimed on the US store RAID copy for the Red Pro family[9] Not a labeled January 2025 table cell.

Reliability

550 TB/year and 2M-hour MTBF.

Reliability specifications
Annual workload rating	550TB/year transferred[1] Footnote 6: annualized TB transferred × (8760 / power-on hours); maximum rating specified at typical 40 °C. Not a lifetime TBW guarantee.
MTBF	2,000,000 hours[1][9] Footnote 5: projected sample MTBF at 220 TB/year and 40 °C; derates above those parameters up to 550 TB/year. Does not predict one drive and is not a warranty. This air column is 2,000,000 hours, not the helium 2.5M-hour family headline.
Load/unload cycles	600,000[1]
Unrecoverable read error rating	Less than 1 in 10^15 bits read[1]

Support

5-year limited warranty.

Support specifications
Limited warranty	5 years[1]

Power

2.00 A peak; 6.9/4.9/0.3 W.

Power specifications
12V peak current	2.00A[1]
Read/write power	6.9W[1]
Idle power	4.9W[1]
Standby / sleep power	0.3W[1]
Power measurement condition	Room ambient temperature; numeric temperature not stated[1] Footnote 8: power measurements at room-ambient temperature. Not NAS-pack watts.

Environment

0–65 °C; vibration unpublished.

Environment specifications
Operating temperature	0 to 65°C[1]
Non-operating temperature	−40 to 70°C[1]
Shock (2ms)	70G read/write; 70G read; 300G non-operating[1]
Vibration limits	Unknown; not stated in the January 2025 data sheet[1]

Acoustics

29 / 36 dBA ratings.

Acoustics specifications
Idle / seek acoustics	29 / 36 dBA[1] Manufacturer ratings; measurement method is not stated in this brief.

Physical

26.1 × 101.6 × 147 mm; 0.72 kg.

Physical specifications
Height × width × depth	26.1 × 101.6 × 147 mm[1]
Weight	0.72 kg[1][9] Data sheet 1.58 lb / 0.72 kg ±3% for this column. US store lists 715gms.
Country of origin	Thailand[1]

Compliance

RoHS plus store certification list.

Compliance specifications
RoHS compliance	Yes[1]
Store-listed certifications	BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL[9]

Exact product identity & open questions

Manufacturer part number: WD6005FFBX[1][9]
Product: One 6TB internal 3.5-inch SATA HDD from the Western Digital WD Red Pro family; enclosure and additional drives sold separately.[1]
Revision rule: Match the complete WD6005FFBX suffix. WD6003FFBX and older 6TB Red Pro SKUs are not interchangeable evidence.[1]

Exact-model independent tests: No professional original lab test with method, charts and the exact current MPN was adopted. Older Red Pro capacities (WD4001FFSX, WD4003FFBX, WD6003FFBX, WD8003FFBX) are related family history only. User-submitted Nero Score and one Kakaku install note do not replace a controlled NAS benchmark.
Exact NAS compatibility: WD store copy says RAID-optimized NAS with unlimited bay count and mentions vendor testing, but Synology and QNAP public HCL pages did not return a usable exact-MPN qualification table in this round (JS/search shells). Confirm the enclosure, DSM/QTS version and the exact MPN on the vendor list before buying an array.
Family comparison video unread: YouTube DXM7znUSIPg (SomeTechGuy, WD Red Plus/Pro vs IronWolf/Pro) was found by title only. No ASR or identity frames were obtained. Do not treat it as a measured result for these MPNs.
Official transfer-rate conflict: Unresolved official conflict: data sheet 267 MB/s vs US store 238 MB/s for WD6005FFBX on 2026-09-11. Equality with WD6003FFBX is suggestive, not proof.
Unpublished exact-model specifications: Vibration limits remain Unknown; not stated in the January 2025 data sheet column.
Current US offer coverage: Qualified: Newegg Brute Networks $434.45 (2026-09-10 kept), Amazon Buy New OneDealOutlet $438.38 3 left, CDW backordered $364.99. Unknown-seller Amazon/Newegg historical duplicates archived. B&H/MemoryC blocked. Walmart not adopted.

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] Western Digital WD Red Pro data sheet — January 2025 ↗
Checked Sep 11, 2026 · January 2025 PDF page 4 WD6005FFBX column, footnotes 1–8, page 1 unlimited-bays highlight
[2] B&H: WD6005FFBX historical US listing ↗
Checked Aug 30, 2026 · Catalog record dated 2026-08-30: exact MPN, new condition, seller status retailer, availability in-stock. Historical catalog reference price $368.99. Any usable 2026-09-10 main offer is recorded separately rather than overwriting this historical observation.
[3] Amazon: WD6005FFBX historical US listing ↗
Checked Aug 31, 2026 · Catalog record dated 2026-08-31: exact MPN, new condition, seller status marketplace-unverified, availability listed. No historical price adopted for this URL. Any usable 2026-09-10 main offer is recorded separately rather than overwriting this historical observation.
[4] MemoryC: WD6005FFBX historical US listing ↗
Checked Aug 31, 2026 · Catalog record dated 2026-08-31: exact MPN, new condition, seller status retailer, availability listed. No historical price adopted for this URL. Any usable 2026-09-10 main offer is recorded separately rather than overwriting this historical observation.
[5] Newegg: WD6005FFBX historical US listing ↗
Checked Aug 31, 2026 · Catalog record dated 2026-08-31: exact MPN, new condition, seller status marketplace-unverified, availability listed. No historical price adopted for this URL. Any usable 2026-09-10 main offer is recorded separately rather than overwriting this historical observation.
[6] Western Digital: WD6005FFBX historical US listing ↗
Checked Aug 31, 2026 · Catalog record dated 2026-08-31: exact MPN, new condition, seller status manufacturer, availability listed. No historical price adopted for this URL. Any usable 2026-09-10 main offer is recorded separately rather than overwriting this historical observation.
[7] Amazon: WD6005FFBX current US new listing ↗
Checked Sep 10, 2026 · Exact MPN in title; selected new main buy box provides Add to cart and shows seller Platinum Micro, Inc.; ships from Amazon; numeric price is hidden behind cart.
[8] Newegg: WD6005FFBX current US new listing ↗
Checked Sep 10, 2026 · Reread 2026-09-11: still Sold/Shipped by Brute Networks at $434.45 Instock true. Original checkedAt kept.
[9] WD US store: 6TB WD Red Pro WD6005FFBX ↗
Checked Sep 11, 2026 · Selected 6TB variant; Specifications 238MB/s vs table 267MB/s
[10] Amazon WD6005FFBX B0D1V42F9B buy box 2026-09-11 ↗
Checked Sep 11, 2026 · Buy New accordion; OneDealOutlet Online; $438.38; Only 3 left
[11] CDW WD6005FFBX 7892245 ↗
Checked Sep 11, 2026 · $364.99; InventoryAvailability Item Backordered
[12] Western Digital warranty policy ↗
Checked Sep 11, 2026 · Region-specific limited warranty

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) · Exact Jan2025 WD Red Pro4/6/8TB columns and footnotes, conflicting official store values, exact current merchant primary offers and dated historical rows; bounded Kakaku user experience for4TB. No exact-MPN lab benchmark claimed; gaps and index decisions preserved.
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)

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