DatacenterDisk

WD 20TB SATA Enterprise HDD - Prices

2 drives tracked. From $16.40/TB. Updated every 4 hours.

Buy or Skip?
✓ Buy if: you want 18% below-average pricing on 20TB 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 → $327.99
Best $/TB
$16.40
Drives
2
Condition
New + Refurb

At $16.40/TB, WD 20TB SATA drives are $13.23/TB cheaper than the 20TB SATA category average of $29.63/TB — strong value at this capacity.

WD 20TB SATA - worth it?

WD 20TB SATA drives include the Ultrastar DC enterprise line and Red Pro NAS series. Both use CMR recording and carry 5-year warranties. From $16.40/TB.

$/TB ▲Brand / ModelCapInterfaceTechCacheSectorWtyPriceCond.90DBuy
👑$16.40
~ Fair
WD
Ultrastar DC 20TB Renewed
WUH722020BLE6L4
Refurb · 5yr
20TB
SATA-6G
7,200 RPM
ePMR512MB512e5yr$327.99REFURB▲Buy →Details▼
$23.50
~ Fair
WD
Ultrastar DC HC570 20TB SATA
WUH722020BLE6L4
5yr
20TB
SATA-6G
7,200 RPM
ePMR512MB512e5yr$469.99new▲Buy →Details▼

Drive Specifications

WD Ultrastar DC 20TB Renewed
WUH722020BLE6L4
REFURB
$16.40/TB
$327.99 total
Capacity
20TB
Interface
SATA-6G
Form Factor
3.5"
Recording
ePMR
RPM
7,200
Cache
512MB
Sector Size
512e
Workload
550TB/yr
Warranty
5 years
WD Ultrastar DC HC570 20TB SATA
WUH722020BLE6L4
$23.50/TB
$469.99 total
Capacity
20TB
Interface
SATA-6G
Form Factor
3.5"
Recording
ePMR
RPM
7,200
Cache
512MB
Sector Size
512e
Workload
550TB/yr
Warranty
5 years

Other WD SATA capacities

4TB6TB8TB12TB14TB16TB18TB20TB22TB24TB

Other brands at 20TB SATA

MDDSeagateSynologyWD

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 20TB 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 high-capacity 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
20TB SATA drives are ideal for backup targets. SATA gives maximum $/TB for backup repositories.
☁️
Object Storage / Cold Data Tier
High-density storage for MinIO, Ceph or Hadoop at scale.
✓ Excellent fit
At 20TB per drive, a 60-bay JBOD delivers 1200TB raw — enough for petabyte-scale object storage.

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 10 hours for 20TB. 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 20TB 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.