DatacenterDisk
WD

WD Red Pro 22TB NAS WD221KFGX

WD221KFGX
WD Red PronasCMR22TBSATA-6G3.5"
$38.73/TB
$851.99
newIn Stock
Price updated
Aug 4, 2026, 04:48 PM
Buy on Amazon →
Quick Verdict

The WD Red Pro 22TB NAS WD221KFGX is a 22TB SATA-6G enterprise drive at $38.73/TB - CMR recording makes it safe for all RAID levels and NAS deployments. New unit with full manufacturer warranty.

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Specifications

Capacity22TB
Form Factor3.5"
InterfaceSATA-6G
Recording TechCMR
RPM7200
Cache512MB
Sector Size—
Workload Rating—
Warranty—
ASINB0B5W1CQ8W

90-Day Price History

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How it compares - 22TB SATA-6G
#1Seagate Exos X22 22TB Renewed
$17.54/TB
#2WD Ultrastar DC HC580 22TB Renewed
$18.41/TB
#3Seagate Exos X22 22TB Renewed
$22.40/TB
#4WD Ultrastar 22TB SATA
$37.73/TB
#5WD Red Pro 22TB NAS WD221KFGXTHIS DRIVE
$37.95/TB

Compare to similar 22TB SATA-6G drives

Seagate
Exos X22 22TB Renewed
$17.54/TB
$385.99
REFURB
WD
Ultrastar DC HC580 22TB Renewed
$18.41/TB
$404.99
REFURB
Seagate
Exos X22 22TB Renewed
$22.40/TB
$492.82
new
WD
Ultrastar 22TB SATA
$37.73/TB
$829.99
new
WD
Ultrastar 22TB SATA WUH722222ALE604
$39.91/TB
$878.00
REFURB

Frequently Asked Questions

Yes. The Red Pro 22TB NAS WD221KFGX uses CMR recording which is fully compatible with all RAID levels.

Warranty varies by seller. Check the Amazon listing for current warranty terms.

Compatible with any server, NAS or workstation with a SATA port. Works in Synology, QNAP, TrueNAS, UnRAID and all major NAS platforms.

Use Case Scenarios

🏠
Home & SMB NAS
Building a high-capacity NAS for media, backups and file sharing.
~ Good fit
CMR recording is RAID-safe and fully compatible with Synology, QNAP, TrueNAS and UnRAID. New drives come with full warranty.
💾
Backup Server / Veeam Target
Dedicated backup storage for Veeam, Commvault, or NetBackup.
✓ Excellent fit
22TB 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 22TB per drive, a 60-bay JBOD delivers 1320TB 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. Establishes baseline for future comparison.
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 11 hours for 22TB. 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 22TB 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.