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WD Red Plus 4TB NAS Hard Drive, 3.5" SATA, CMR (WD40EFZZ)

Price:

$ 345.35


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WD Red Plus 4TB NAS Hard Drive, 3.5" SATA, CMR (WD40EFZZ)

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The WD Red Plus 4TB (WD40EFZZ) is a nas hard drive built for home and small-business NAS systems. It has a 3.5-inch SATA 6Gb/s interface, CMR recording and a workload rating of 180 TB/year, backed by a 3-year limited warranty from Western Digital. ARC IP Networks supplies it Australia-wide at competitive prices.

$ 345.35 345.35 AUD $ 345.35 incl. GST

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  • Storage Capacity
  • Drive Family
  • Interface
  • RPM
  • Cache
  • Workload Rate
  • Recording Technology

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NAS Hard Drive Internal Hard Drive CMR NAS Storage Western Digital WD Red Plus
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SKU
WD40EFZZ
Barcode
718037905754
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The WD Red Plus 4TB (WD40EFZZ) is a nas hard drive built for home and small-business NAS systems. It has a 3.5-inch SATA 6Gb/s interface, CMR recording and a workload rating of 180 TB/year, backed by a 3-year limited warranty from Western Digital. ARC IP Networks supplies it Australia-wide at competitive prices.

WD Red Plus 4TB nas hard drive (WD40EFZZ)

WD Red Plus 4TB overview

WD Red Plus internal HDDs are designed to handle workloads for power users and small to medium business NAS environments. WD Red Plus drives deliver the speed and capacity required to store, protect and share growing amounts of data in mid-sized RAID-optimised NAS systems with increased power efficiency.

The WD40EFZZ combines 4TB of capacity, 5400 RPM, 128MB cache, transfer rates up to 180MB/s, a workload rating of 180 TB/year and 1,000,000 hours MTBF (projected).

It is designed for rAID-optimised NAS systems with up to 8 bays. Western Digital technologies on this drive: NASware (WD Red Plus pages refer to "NASware"; version not stated).

Every WD Red Plus 4TB sold by ARC IP Networks is genuine, new Western Digital stock with the full 3-year limited manufacturer's warranty, delivered Australia-wide at competitive prices. Australian stock from ARC IP Networks.

Key features

Tuned for NAS with NASware

Western Digital’s exclusive NASware technology fine tunes drive parameters to match NAS system workloads which helps increase performance and reliability.

Designed for Continuous Operation

Since your NAS system is always on, a reliable drive is essential. WD Red Plus hard drives are designed for systems that operate 24x7, giving users the confidence of knowing they can reliably access their data.

Tested for Dependable Compatibility

Western Digital partners with a wide range of NAS system vendors for extensive testing to ensure compatibility with most NAS enclosures.

Optimised for Lower TCO

WD Red Plus drives are engineered to use less power (versus previous models) and run cooler, which reduces operating costs and helps reduce heat in thermally challenged NAS boxes.

Powered for Strong Performance

Despite using less power, the drives have plenty of bandwidth to handle the mixed performance demands of multi-drive NAS systems.

Balanced for Increased Reliability

Hard drives that are not properly balanced may cause excessive vibration and noise in multi-drive systems, which could reduce hard drive life span and degrade the performance over time.

WD Red Plus 4TB specifications

At a glance

4TB
SATA 6Gb/s
CMR
5400 RPM
128MB cache
180 TB/year workload
3-year warranty
WD Red Plus 4TB full specifications
General
Capacity4TB
InterfaceSATA 6Gb/s
Form factor3.5-inch
Recording technologyCMR
Drive technologyAir
Native command queuingYes
Advanced Format (AF)Yes
RoHS compliantYes
TechnologiesNASware (WD Red Plus pages refer to "NASware"; version not stated)
Supported NAS baysRAID-optimised NAS systems with up to 8 bays
Warranty3-year limited warranty
Performance
Internal transfer rate (up to)180MB/s
Cache128MB
Spindle speed (RPM)5400
Reliability
Workload rate180 TB/year
MTBF1,000,000 hours
Load/unload cycles600,000
Non-recoverable errors per bits read<1 in 10^14
Power
12VDC ±5% (A, peak)1.75
Average power, read/write4.5 W
Average power, idle2.9 W
Average power, standby and sleep0.3 W
Environmental
Operating temperature0 to 65 °C
Non-operating temperature-40 to 70 °C
Shock, operating (2 ms, read/write)70 G
Shock, operating (2 ms, read)70 G
Shock, non-operating (2 ms)250 G
Acoustics, idle24 dBA
Acoustics, seek (average)27 dBA
Physical
Height (max)26.1 mm
Length (max)147 mm
Width101.6 mm
Weight0.55 kg (±10%)

Source: Western Digital's published specifications (Western Digital product page and datasheet for this model). Western Digital may change specifications without notice.

The Western Digital datasheet for this drive is attached under Documents on this page.

WD Red Plus 4TB compatibility

Who it suits

  • 1 to 8-bay home and small-office NAS
  • File sharing, backups and media libraries
  • RAID 1, 5 and 6 arrays
  • Synology, QNAP and ASUSTOR NAS enclosures

Compatibility

  • 3.5-inch drive bay with a SATA connection
  • RAID-optimised NAS systems with up to 8 bays

Other WD Red Plus capacities

  • 2TB (WD20EFPX)
  • 8TB (WD80EFPX)

Related guides

How Much NAS Storage Do You Need? TB Explained (Australia)

NAS RAID Explained: RAID 1, 5, 6 and 10 for ASUSTOR (Australia)

NAS Backup Done Right: The 3-2-1 Rule and RAID 5 vs RAID 6 (Australia)

Buy the WD Red Plus 4TB from ARC IP Networks

ARC IP Networks is a trusted Western Digital supplier in Australia: genuine WD drives at competitive prices, with the full manufacturer's warranty, Australia-wide delivery and trade pricing.

  • Genuine Western Digital: new, sealed WD drives.
  • Manufacturer warranty: Western Digital 3-year limited warranty, as published by Western Digital for this model.
  • Australia-wide delivery to every state and territory.
  • Trade and project pricing: call 1300 100 440 or email info@arcip.com.au.

Frequently asked questions

Straight answers about the WD Red Plus 4TB from the ARC IP Networks team.

Last reviewed October 2026.

The WD Red Plus 4TB (WD40EFZZ) is a nas hard drive built for home and small-business NAS systems. It has a 3.5-inch SATA 6Gb/s interface, CMR recording and a workload rating of 180 TB/year, backed by a 3-year limited warranty from Western Digital.

The WD40EFZZ uses CMR (conventional magnetic recording), as published by Western Digital. CMR is the preferred recording method for RAID and continuous-write workloads.

Western Digital covers the WD40EFZZ with a 3-year limited warranty. ARC IP Networks supplies genuine Australian stock with the full manufacturer's warranty.

The WD40EFZZ is a 3.5-inch SATA NAS drive, which is the drive type these NAS enclosures take. Check the NAS maker's compatibility list for your model before you buy.

Western Digital designs it for rAID-optimised NAS systems with up to 8 bays.

Western Digital rates the WD40EFZZ for 180 TB/year, with an MTBF of 1,000,000 hours (projected).

ARC IP Networks is a trusted Western Digital supplier in Australia: genuine WD drives at competitive prices, with the full manufacturer's warranty, Australia-wide delivery and trade pricing. Order the WD40EFZZ online or call 1300 100 440 for project and volume pricing.

Need several WD Red Plus 4TB drives for a NAS build?

Ask ARC IP Networks for volume and project pricing on genuine Western Digital drives.

Genuine Western Digital in Australia. Browse the WD range at ARC IP Networks: WD Purple surveillance drives, WD Red NAS drives, WD Blue and WD_BLACK desktop drives, Ultrastar data centre drives and WD Elements external drives.

Shop all WD drives

Brand Western Digital
Form Factor 3.5-inch Internal
Warranty 3 Years
Storage Capacity 4TB
Drive Family WD Red Plus
Interface SATA 6 Gb/s
RPM 5400 RPM
Cache 128MB
Workload Rate 180TB/year
Recording Technology CMR
WD Red Plus datasheet (Western Digital).pdf
Download

Accurate Shipping Costs

Our online shipping calculator is designed to provide a final, accurate shipping cost based on the items in your cart and your delivery postcode. Shipping costs are calculated at checkout based on your order and delivery postcode. The final cost is calculated based on several factors which are automatically accounted for by our system, including:

  • The stock location of the item(s) across our warehouses.
  • Orders with multiple items that may require special packaging.
  • The weight and dimensions of the order (including heavy or oversized items).
  • The delivery courier servicing your specific region.

Delivery Times


 

Standard Processing


Most orders placed by 2pm AEDT are dispatched for next working day delivery. Larger orders may require 1-2 additional business days for processing. If timing is critical, please contact us to discuss expedited options (additional charges may apply).


Delivery Timeframes


Region

Processing Time

Express Delivery

Standard Delivery

VIC, NSW, SA, QLD Metro, TAS

1-2 business days

1-2 business days

2-4 business days

NT, WA, QLD Rural

1-2 business days

1-2 business days

3-5 business days

New Zealand

1-2 business days

2-3 business days

4-10 business days

Please note: Processing times may extend during peak periods such as Christmas and end of financial year.

Free Warehouse Pickup



Save on shipping costs with free pickup from our ARC IP Networks Blackburn warehouse. Simply place your order online or by phone, and collect during business hours (Monday to Friday). Please allow time for picking and packing. For urgent orders, call 1300 100 440 to confirm your order is ready.

ARC IP Networks Pickup Address: 6 George Street, Blackburn, VIC 3130


Insurance & Tracking



All ARC IP Networks shipments are fully insured and trackable. Once dispatched, you'll receive an email with your tracking number and courier website details. If your item is confirmed lost or damaged by our courier, we'll arrange a replacement in consultation with you.


International Shipping



ARC IP Networks ships to New Zealand. Please note:


  • Import duties and taxes vary by country
  • Buyers are responsible for all customs charges
  • Contact your local customs authority before ordering
  • We'll provide required documentation for smooth customs clearance
  • Buyers cover all shipping costs for returns due to refused duties/taxes


Delivery Requirements


Signature Required


All deliveries must be signed for. If you won't be home, contact our Sales Support team to arrange Authority to Leave. Important: Authority to Leave voids shipping insurance if parcels are lost or stolen.


Delivery Restrictions


We do not deliver to PO Boxes or Parcel Lockers as our couriers cannot access them. Orders sent to these addresses will be returned, incurring redelivery fees.


Shipping Issue Resolution


ARC IP Networks works closely with our shipping partners to resolve any delivery issues quickly and fairly:


  1. Confirmation: We verify expected delivery dates with our shipping partners
  2. Investigation: Issues outside normal timeframes trigger formal investigations
  3. Communication: We keep you updated throughout the resolution process
  4. Resolution: Confirmed lost items are replaced or refunded after investigation completion


Please note: Refunds for lost, missing, or delayed orders cannot be processed until shipping partner investigations are complete. This does not affect your rights under the Australian Consumer Law, and refunds or replacements will be provided where required once loss or damage is confirmed.

Warranty & Faulty Products

ARC IP Networks complies with the Australian Consumer Law (ACL).

If a product is faulty, damaged, not of acceptable quality, or does not perform as advertised, you are entitled to a repair, replacement, or refund in accordance with ACL.

Manufacturer Warranty Returns

For faults developing after 14 days within the warranty period:

  • Contact ARC IP Networks first at info@arcip.com.au or 1300 100 440
  • We will assess the issue and coordinate with manufacturers, authorised service centres, or distributors on your behalf
  • Where required, a manufacturer RMA may be arranged
  • ARC IP Networks manages the return process and next steps

Dead on Arrival (DOA)

Products that arrive faulty or damaged must be reported within 14 days of delivery.

ARC IP Networks will arrange assessment, replacement, or refund as appropriate.

Change of Mind & Non-Faulty Returns

Change-of-mind returns must be requested within 14 days of delivery. For change-of-mind returns, the product must be unused, unopened, in its original packaging, and returned with all accessories and documentation. These conditions apply only to change-of-mind returns and do not limit or exclude your rights under the Australian Consumer Law. Some products are not eligible for change-of-mind returns, including:

  • Ex-demo products
  • Clearance or markdown items
  • Special-order items
  • Products clearly marked “No Change-of-Mind Returns”

Important

This does not affect your rights under Australian Consumer Law.

If a product is faulty, not of acceptable quality, or does not meet advertised specifications, it remains eligible for return regardless of category.

Refunds & Processing Timeframes

  • Approved refunds are processed within 7 business days of receiving returned goods
  • Refunds are issued to the original payment method, unless otherwise agreed
  • Replacement or repair may be offered where appropriate
  • Store credit may be offered only with customer consent

Handling fees and non-returnable service charges may not be refundable where permitted by law.


Restocking Fees

For approved change-of-mind or non-faulty returns, a 15% restocking fee applies.

  • Any applicable restocking fee will be clearly communicated prior to return approval
  • The fee will be deducted from the refund amount
  • Restocking fees do not apply to returns made under the Australian Consumer Law, including faulty, damaged, or misrepresented goods.

Return Shipping Costs

  • Change-of-mind returns: The customer is responsible for return shipping costs.
  • Faulty or defective products: ARC IP Networks covers return shipping under Australian Consumer Law.

Non-Warranty Repairs

For issues not covered by warranty:

  • ARC IP Networks will provide a quote before proceeding
  • Customers are responsible for all shipping and service costs
  • No repairs are undertaken without customer approval

Return Methods

Returns may be made:

  • In-store at ARC IP Networks – 6 George Street, Blackburn VIC 3130
  • Or by shipment as instructed by our support team

Proof of purchase is required for all returns.

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