MDD

MDD 20TB SATA 7200RPM NAS

MD20TS25672NAS
MDD Enterprisenearline20TBSATA-6G3.5"
$32.00/TB
$639.99
newIn Stock
This offer: sold by goHardDrive · Amazon says New / New
Price updated
Price accurate as of Oct 18, 2026, 12:00 AM
Buy on Amazon

The MDD 20TB SATA 7200RPM NAS is a 20TB SATA-6G HDD in new condition. It is in stock at $639.99 - $32.00/TB.

Where this listing sits: every 20TB hard drive · 20TB SATA drives — each page is the live ranking for that slice of the catalogue.

This drive is sold under the MDD (MaxDigitalData) label. Who is MDD? → — the trademark record, what the warranty covers, and the checks to run on arrival.

Same capacity, other options
DriveInterfaceCond$/TBPrice
WD Ultrastar DC 20TB RenewedSATA-6GRefurb$28.50$569.99Buy on Amazon
WD Ultrastar 20TB SATA WUH722020ALE604SATA-6GRefurb$31.50$630.00Buy on Amazon
MDD 20TB SATA 7200RPM NASSATA-6GRefurb$32.00$639.99Buy on Amazon
WD Red Pro 20TB WD201KFGXSATA-6GRefurb$40.00$799.99Buy on Amazon

All 20TB drives we track, ranked by cost per terabyte.

Model context

CMR or SMR? What we can and cannot source for this part number

Part of the MDD line we track.

Quick Verdict

The MDD 20TB SATA 7200RPM NAS is a 20TB SATA-6G enterprise drive at $32.00/TB - Verify recording technology before use in RAID. New unit with full 5-year warranty.

Share:WhatsAppFacebookPost on X

Specifications

Capacity20TB
Form Factor3.5"
InterfaceSATA-6G
Recording Tech—
RPM7200
Cache256MB
Sector Size512e
Workload Rating550TB/yr
Warranty5 years
ASINB0C3FBQNC9
Market context

Against every other drive we have an in-stock price for today, this one is cheaper per tb than 69% of them (163 of 237). The cheapest we can currently buy is $14.99/TB; the middle of the market is $38.62/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 20TB drive we track →Cheapest per terabyte, all categories →Category price trends →
How it compares - 20TB SATA-6G
#1WD Ultrastar DC 20TB Renewed
$28.50/TB
#2WD Ultrastar 20TB SATA WUH722020ALE604
$31.50/TB
#3MDD 20TB SATA 7200RPM NAS
$32.00/TB
#4MDD 20TB SATA 7200RPM NASTHIS DRIVE
$32.00/TB
#5WD Red Pro 20TB WD201KFGX
$40.00/TB

Also appears in

Prices and forecast
SATA hard drives
Price per terabyte
Hard drives by capacity
Brands
Compatibility
Other pages

Frequently Asked Questions

Yes. At our last check it was $639.99 ($32.00 per terabyte at its 20TB capacity), sold new under ASIN B0C3FBQNC9. Amazon sets the final price at checkout.

This listing (MD20TS25672NAS, ASIN B0C3FBQNC9) carries no renewed, recertified, refurbished or pulled claim in its title, and Amazon reports it as new. On this site that is what "new" means: sold as factory-new. The stored warranty on this row is 5 years, as the listing states it.

Use Case Scenarios

🏠
Home & SMB NAS
Building a high-capacity NAS for media, backups and file sharing.
✓ Excellent fit
Verify CMR recording before using in RAID. New drives come with full warranty.
💾
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. 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 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 MDD 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.