DE Deutsch
WD

WD Purple 4TB WD43PURZ

WD43PURZ
WD PurpleCMR4TBSATA-6G3.5"
$54.50/TB
$218.00
REFURBIn Stock
This offer: sold by Multi-Com Computers (All Serial Numbers Recorded) · Amazon says Used / LikeNew
Price updated
Price accurate as of Nov 4, 2026, 12:00 AM
Buy on Amazon

The WD Purple 4TB WD43PURZ is a 4TB SATA-6G HDD in used condition. It is in stock at $218.00 - $54.50/TB.

Where this listing sits: every 4TB hard drive · 4TB SATA drives · WD 4TB SATA — each page is the live ranking for that slice of the catalogue.

This is a refurbished or recertified listing

Recertified enterprise drives are pulled from datacentre fleets, tested and resold. They are usually the cheapest route to bulk capacity, and the risk is concentrated in the first weeks - so check SMART data the day it arrives rather than the day you need it. What recertified means · Refurbished warranty terms · Verify on arrival

Same capacity, other options
DriveInterfaceCond$/TBPrice
HP 695842-001 4TB SAS 6GSAS-6GNew$17.00$68.00Buy on Amazon
Seagate Enterprise Capacity 4TB SAS 12G 512nSAS-12GRefurb$22.50$90.00Buy on Amazon
WD Red Plus 4TB WD40EFZZSATA-6GNew$48.75$194.99Buy on Amazon
WD Purple 4TB WD44PURZSATA-6GNew$48.75$194.99Buy on Amazon

All 4TB drives we track, ranked by cost per terabyte.

Model context

CMRSource: WD Purple surveillance hard drive data sheet Recording technology for this model

Part of the WD line we track.

Quick Verdict

The WD Purple 4TB WD43PURZ is a 4TB SATA-6G enterprise drive at $54.50/TB - CMR recording makes it safe for all RAID levels and NAS deployments. As a refurbished unit, run SMART diagnostics on arrival and verify power-on hours.

Share:WhatsAppFacebookPost on X

Specifications

Capacity4TB
Form Factor3.5"
InterfaceSATA-6G
Recording TechCMRsource
RPM—
Cache256MB
Sector Size—
Workload Rating180TB/yr
Warranty3 years
ASINB0CC6SB4F4
Market context

Against every other drive we have an in-stock price for today, this one is cheaper per tb than 15% of them (37 of 243). The cheapest we can currently buy is $14.99/TB; the middle of the market is $37.99/TB.

Where the wider market has moved

These are third-party figures about the retail market as a whole, quoted and dated. They are not our own measurements and they do not describe this specific drive.

Compare against every 4TB drive we track →Cheapest per terabyte, all categories →Category price trends →
How it compares - 4TB SATA-6G
#1WD Purple 4TB WD40PURZ
$37.50/TB
#2Seagate SkyHawk 4TB ST4000VX007
$37.50/TB
#3Seagate BarraCuda 4TB ST4000DMZ04
$39.35/TB
#4Seagate IronWolf 4TB NAS ST4000VN008
$39.99/TB
#5WD Purple 4TB WD43PURZTHIS DRIVE
$54.50/TB

Works in these NAS machines

UniFi UNAS / UNVR
Fit-verified
Meets Ubiquiti's written 1TB+ CMR requirement; check the 7200RPM clause

Resolved against manufacturer compatibility lists we read and dated, capped at 4. Vendor-listed means the manufacturer names this exact part number; fit-verified is our own check of form factor, interface and recording technology against a published requirement. Neither is a guess, and a drive the registry cannot resolve shows nothing here rather than a maybe. How compatibility actually works

Also appears in

SATA hard drives

Frequently Asked Questions

Yes. At our last check it was $218.00 ($54.50 per terabyte at its 4TB capacity), sold used under ASIN B0CC6SB4F4. Amazon sets the final price at checkout.

Amazon reports this listing (WD43PURZ) as used, and its title makes no renewed or recertified claim, so the unit's origin is whatever the seller's note says - shown beside the price. The stored warranty on this row is 3 years, as the listing states it.

The WD43PURZ's stored recording technology is CMR (manufacturer-sourced), which rebuilds predictably in RAID. The row carries a 180TB/year workload rating.

Use Case Scenarios

🏠
Home & SMB NAS
Building a mid-range NAS for media, backups and file sharing.
✓ Excellent fit
CMR recording is RAID-safe and fully compatible with Synology, QNAP, TrueNAS and UnRAID. Refurb units offer strong value for non-critical NAS.
💾
Backup Server / Veeam Target
Dedicated backup storage for Veeam, Commvault, or NetBackup.
✓ Excellent fit
4TB SATA drives are ideal for backup targets. SATA gives maximum $/TB for backup repositories.
🏗️
Virtualization Host Storage
VM images and snapshots on Proxmox, VMware or Hyper-V.
~ Good fit
Suitable for VM storage where workloads are not IOPS-intensive. SATA is fine for single-host VM storage. Consider NVMe cache for latency-sensitive VMs.

Maintenance & Troubleshooting

Maintenance Checklist

On installCheck SMART baseline on arrival
Run smartctl -a /dev/sdX and record: Reallocated_Sector_Ct, Power_On_Hours, Spin_Retry_Count. Critical for refurb drives — refuse any with reallocated sectors > 0.
MonthlyRun SMART short self-test
smartctl -t short /dev/sdX — takes 1-2 minutes, catches most developing issues. Schedule during off-peak.
QuarterlyRun SMART long self-test
smartctl -t long /dev/sdX — full surface scan, takes 2 hours for 4TB. Any test failure is grounds for immediate replacement.
QuarterlyCheck RAID array health
Verify no degraded drives. A degraded array with no hot spare is one failure from data loss. Check mdstat or controller UI.
AnnuallyVerify drive firmware version
Check WD support site for firmware updates. Some versions have known bugs affecting integrity.
Every 3-5 yearsPlan proactive replacement
Enterprise HDDs have higher failure rates after year 4-5. At 4TB per drive, budget for replacements before failures occur.

Troubleshooting Guide

Cause: Loose SATA data or power cable, failed port, or drive not spinning up.
Fix: Reseat both cables. Try a different port. Listen for spin-up sound. Test with a known-good cable.