DatacenterDisk

WD 4TB SATA Enterprise HDD - Prices

3 drives tracked. From $27.00/TB. Updated every 4 hours.

Buy or Skip?
✓ Buy if: you want 28% 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 → $108.00
Best $/TB
$27.00
Drives
3
Condition
New + Refurb

At $27.00/TB, WD 4TB SATA drives are $5.54/TB cheaper than the 4TB SATA category average of $32.54/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 $27.00/TB.

$/TB ▲Brand / ModelCapInterfaceTechCacheSectorWtyPriceCond.90DBuy
👑$27.00
↓ Good
WD
Ultrastar 7K4000 4TB SATA NAS
HMS5C4040ALE640
Refurb · CMR ·
4TB
SATA-6G
7,200 RPM
CMR—512n—$108.00REFURB▲Buy →Details▼
$36.25
↑ High
WD
Ultrastar 7K4000 4TB SATA NAS
HMS5C4040ALE640
CMR ·
4TB
SATA-6G
7,200 RPM
CMR—512n—$145.00new▲Buy →Details▼
$50.00
~ Fair
WD
MegaScale DC 4000.B 4TB SATA Enterprise
HMS5C4040ALE640
Refurb · CMR ·
4TB
SATA-6G
7,200 RPM
CMR—512n—$199.99REFURB▲Buy →Details▼

Drive Specifications

WD Ultrastar 7K4000 4TB SATA NAS
HMS5C4040ALE640
REFURB
$27.00/TB
$108.00 total
Capacity
4TB
Interface
SATA-6G
Form Factor
3.5"
Recording
CMR
RPM
7,200
Cache
N/A
Sector Size
512n
Workload
—
Warranty
—
WD Ultrastar 7K4000 4TB SATA NAS
HMS5C4040ALE640
$36.25/TB
$145.00 total
Capacity
4TB
Interface
SATA-6G
Form Factor
3.5"
Recording
CMR
RPM
7,200
Cache
N/A
Sector Size
512n
Workload
—
Warranty
—
WD MegaScale DC 4000.B 4TB SATA Enterprise
HMS5C4040ALE640
REFURB
$50.00/TB
$199.99 total
Capacity
4TB
Interface
SATA-6G
Form Factor
3.5"
Recording
CMR
RPM
7,200
Cache
N/A
Sector Size
512n
Workload
—
Warranty
—

Other WD SATA capacities

4TB6TB8TB12TB14TB16TB18TB20TB22TB24TB

Other brands at 4TB SATA

SeagateSynologyToshibaWD

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
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.