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Western Digital Red 4TB SATA HDD WD40EFRX
Inclusive of VAT · Warranty included
Western Digital
Product Specification
| Capacity | 4TB |
| Form Factor | 3.5" LFF |
| Interface | SATA 6Gb/s |
| Drive Class | 5400 RPM |
| Designed For | NAS Systems |
| Operation | Low Power and Quiet Operation |
Refurbished · Tested
Western Digital Red 4TB SATA hard drive WD40EFRX, a 3.5 inch 5400 rpm class NAS drive built for RAID and always-on operation, refurbished.
The WD40EFRX is the 4TB member of Western Digital's Red line, the drives designed for network attached storage: rated for continuous operation in enclosures of up to eight bays, with firmware tuned for RAID so that error recovery does not stall an array, and a 5400 rpm class spindle that keeps power and noise low. It is a 3.5 inch SATA 6Gb/s drive and the same model ServerDove fits to its QNAP NAS units. Buyers in Qatar use the refurbished WD40EFRX to fill or repair NAS enclosures, and ServerDove keeps it in Doha stock alongside the enclosures it suits, so a NAS and its drives can be supplied together.
HDD-WD-4TB-RED-SATAForm factor 3.5 inchSpecification
The Red's RAID friendly error recovery is the reason to choose it over a desktop drive of the same capacity: a desktop drive that spends too long retrying a bad sector is dropped from an array, while the Red reports the error and lets the array handle it. Sequential throughput is around 150 megabytes per second, ample for a Gigabit network.
Buyers repairing an array should match the model: the WD40EFRX is a conventional magnetic recording drive, and mixing it with the shingled recording variants sold later under a similar name causes slow rebuilds in RAID, so the EFRX suffix is worth checking on the label of the existing drives. Four of these in RAID 5 give 12TB usable in a four bay NAS, or 8TB in RAID 10.
Installation
Fit the drive in the NAS tray, slide it in and let the NAS initialise it; most enclosures then offer to add it to an existing volume or use it as a spare. Building a new array from four or more of these takes several hours to synchronise, during which the NAS remains usable. In a server, use the vendor's 3.5 inch caddy and a SATA capable controller. Keep all drives in a RAID set the same model and capacity.
Part numbers and identification
Condition & testing
- Tested in a compatible system
- Verified against the listed part number and specification
- Fully working; minor cosmetic marks are possible on refurbished units.
- 6-month warranty on every unit we sell, with installation and support across Qatar.
What ships with this part
Images are for illustration. The unit supplied is the one described in the specification and may differ cosmetically.
Our team in Doha answers specification and compatibility questions during working hours.
Ask on WhatsApp sales@serverdove.comIs the WD40EFRX suitable for NAS systems?
Yes, this Western Digital Red drive is designed for NAS systems and shared storage use.
What interface does this hard drive use?
It uses a SATA 6Gb/s interface for compatibility with supported storage systems.
What is the capacity of this drive?
This model provides 4TB of storage capacity.
Can this drive be used in RAID environments?
Yes, the product details indicate that it is suitable for RAID environments.
What form factor is the WD40EFRX?
It is a 3.5-inch LFF hard drive.
What does refurbished mean at ServerDove?
Off-lease or decommissioned enterprise hardware that we clean, test and reset in Doha. Every unit goes through POST, burn-in, memory and drive checks and a power-supply check, with firmware and BIOS returned to defaults and drives securely erased.
Can I ask about the exact unit before I buy?
Yes. Message us the SKU on WhatsApp and we will confirm the condition and configuration of the unit in stock, with photos if you want them.
How fast is delivery in Qatar?
Orders ship from Doha and arrive within one working day anywhere in Qatar. Delivery is free on orders over QAR 300.
Can I collect in person?
Yes, from Nuaija Office 7, Doha, usually within 24 hours of ordering. Choose pick-up at checkout and we will message you when it is ready.
What warranty is included?
A 6-month hardware warranty from the delivery date, covering the unit as supplied. If a part fails we repair or replace it. Full terms are on the warranty page.
What is your return policy?
If the unit arrives faulty or not as described, tell us and we will collect it and replace or refund it. Full terms are on the Refund Policy page.
Which payment methods do you accept?
Visa, Mastercard and American Express online. Bank transfer is available for company orders; contact us for details.
Do prices include VAT?
Yes, all prices shown include VAT, and every order ships with a tax invoice.
Why buy refurbished
Enterprise hardware, tested in Doha, at a fraction of the price of new
Every unit we sell has already proven itself in a data centre. We test it again, grade it, and back it with a warranty before it leaves our stock.
Tested before it ships
POST, burn-in, memory and power-supply checks on every unit. Anything that fails is repaired or pulled from stock, not sold.
Same performance, lower cost
A Xeon runs the same workloads whether it is new or two years old. Spend the difference on more CPUs, memory or storage.
In stock, not on order
New enterprise hardware can take weeks or months to arrive. Ours is on the shelf in Doha and delivered across Qatar within a day.
Warranty and local support
Every unit is covered. Installation, configuration and hardware support are handled by our own team in Qatar, not a call centre abroad.