WD 4TB SATA Enterprise HDD - Prices

24 drives tracked. From $22.25/TB. Updated every 4 hours.

Buy or Skip?
✓ Buy if: you want 60% below-average pricing on 4TB WD drives. These are datacenter pulls - verify SMART data on arrival.
✗ Skip if: you require new-only drives for production RAID or need guaranteed OEM warranty - consider new alternatives.
Buy on Amazon → $88.99
Best $/TB
$22.25
Drives
24
Condition
New + Refurb

At $22.25/TB, WD 4TB SATA drives are $29.99/TB cheaper than the 4TB SATA category average of $52.24/TB — strong value at this capacity.

WD 4TB SATA - worth it?

WD 4TB SATA drives include the Ultrastar DC enterprise line and Red Pro NAS series. Both use CMR recording and carry 5-year warranties. From $22.25/TB.

$/TBBrand / ModelCapInterfaceTechCacheSectorWtyPriceCond.90DBuy
👑$22.25
↓ vs 30d avg
WD
WD Purple 4TB WD40PURX
WD40PURX
Refurb ·
4TB
SATA-6G
$88.99REFURBBuy →Details
$24.73
↓ vs 30d avg
WD
Ultrastar 7K4000 4TB SATA NAS
HMS5C4040ALE640
Refurb · CMR ·
4TB
SATA-6G
7,200 RPM
CMR512n$98.90REFURBBuy →Details
$32.00
↓ vs 30d avg
WD
Ultrastar 4TB SATA
Refurb · CMR ·
4TB
SATA-6G
7,200 RPM
CMR256MB$128.00REFURBBuy →Details
$32.50
↓ vs 30d avg
WD
WD Purple 4TB WD40PURX
WD40PURX
Refurb ·
4TB
SATA-6G
$129.99REFURBBuy →Details
$41.25
↓ vs 30d avg
WD
WD Purple 4TB WD40PURZ
WD40PURZ
Refurb · 3yr
4TB
SATA-6G
5,400 RPM
64MB3yr$164.99REFURBBuy →Details
$42.50
~ 30d avg
WD
WD Red Pro 4TB WD4003FFBX
WD4003FFBX
Refurb · CMR · 5yr
4TB
SATA-6G
7,200 RPM
CMR256MB5yr$170.00REFURBBuy →Details
$43.75
~ 30d avg
WD
WD Purple 4TB WD40PURX
WD40PURX
Refurb ·
4TB
SATA-6G
$175.00REFURBBuy →Details
$44.89
↑ vs 30d avg
WD
Ultrastar 7K4000 4TB SATA NAS
HMS5C4040ALE640
CMR ·
4TB
SATA-6G
7,200 RPM
CMR512n$179.57newBuy →Details
$48.42
~ 30d avg
WD
WD Purple 4TB WD44PURZ
WD44PURZ
Refurb · CMR · 3yr
4TB
SATA-6G
CMR128MB3yr$193.69REFURBBuy →Details
$48.75
~ 30d avg
WD
WD Red Plus 4TB WD40EFZZ
WD40EFZZ
CMR · 3yr
4TB
SATA-6G
5,400 RPM
CMR128MB3yr$194.99newBuy →Details
$50.00
~ 30d avg
WD
MegaScale DC 4000.B 4TB SATA Enterprise
HMS5C4040ALE640
Refurb · CMR ·
4TB
SATA-6G
7,200 RPM
CMR512n$199.99REFURBBuy →Details
$50.00
↓ vs 30d avg
WD
WD Red Plus 4TB WD40EFZX
WD40EFZX
Refurb · CMR ·
4TB
SATA-6G
CMR$199.99REFURBBuy →Details
$52.00
~ 30d avg
WD
WD Purple 4TB WD43PURZ
WD43PURZ
Refurb · CMR · 3yr
4TB
SATA-6G
CMR256MB3yr$208.00REFURBBuy →Details
$54.75
↑ vs 30d avg
WD
WD Purple 4TB WD40PURX
WD40PURX
4TB
SATA-6G
$218.99newBuy →Details
$58.25
↑ vs 30d avg
WD
WD Purple 4TB WD40PURX
WD40PURX
4TB
SATA-6G
$232.99newBuy →Details
$60.00
↑ vs 30d avg
WD
WD Purple 4TB WD43PURZ
WD43PURZ
CMR · 3yr
4TB
SATA-6G
CMR256MB3yr$239.99newBuy →Details
$65.00
↑ vs 30d avg
WD
WD Purple 4TB WD40PURZ
WD40PURZ
3yr
4TB
SATA-6G
5,400 RPM
64MB3yr$259.99newBuy →Details
$67.50
↓ vs 30d avg
WD
WD Red Pro 4TB WD4003FFBX
WD4003FFBX
Refurb · CMR · 5yr
4TB
SATA-6G
7,200 RPM
CMR256MB5yr$269.99REFURBBuy →Details
$75.00
↑ vs 30d avg
WD
Ultrastar 4TB SATA
Refurb · CMR ·
4TB
SATA-6G
CMR$299.99REFURBBuy →Details
$76.99
↑ vs 30d avg
WD
Ultrastar 4TB SATA
CMR ·
4TB
SATA-6G
CMR$307.95newBuy →Details
$77.25
↑ vs 30d avg
WD
WD Red Plus 4TB WD40EFZX
WD40EFZX
CMR ·
4TB
SATA-6G
CMR$308.99newBuy →Details
$79.11
↑ vs 30d avg
WD
Ultrastar 4TB SATA
CMR ·
4TB
SATA-6G
7,200 RPM
CMR256MB$316.42newBuy →Details
$92.00
~ 30d avg
WD
Ultrastar 4TB SATA WUS721204BLE6L4
WUS721204BLE6L4
CMR ·
4TB
SATA-6G
7,200 RPM
CMR256MB512e$367.98newBuy →Details
$92.50
↑ vs 30d avg
WD
WD Red Pro 4TB WD4003FFBX
WD4003FFBX
CMR · 5yr
4TB
SATA-6G
7,200 RPM
CMR256MB5yr$369.99newBuy →Details

Other brands at 4TB SATA

Frequently Asked Questions

WD enterprise SATA drives (Ultrastar, Gold) use CMR. WD Red non-Pro models in some capacities use SMR - always verify the model number. Red Pro and Red Plus are CMR.

WD 4TB SATA drives are compatible with all major NAS platforms including Synology DiskStation, QNAP, TrueNAS, UnRAID, and any server with SATA ports. Check your NAS manufacturer's compatibility list for confirmed models.

Both are available. New drives carry full manufacturer warranty. Refurbished units are datacenter pulls with low hours - excellent value for secondary storage and backup targets.

Use Case Scenarios

🏠
Home & SMB NAS
Building a mid-range NAS for media, backups and file sharing.
✓ Excellent fit
Verify CMR recording before using in RAID. 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.