DatacenterDisk

MDD 20TB SATA Enterprise HDD - Prices

2 drives tracked. From $25.00/TB. Updated every 4 hours.

Buy or Skip?
✓ Buy if: you specifically need MDD at this capacity for compatibility. 5-year warranty included.
✗ Skip if: you need higher workload rating than 550TB/year.
Buy on Amazon → $499.99
Best $/TB
$25.00
Drives
2
Condition
New + Refurb

At $25.00/TB, MDD 20TB SATA drives are $10.85/TB cheaper than the 20TB SATA category average of $35.85/TB — strong value at this capacity.

MDD 20TB SATA - worth it?

MDD MaxDigitalData 20TB SATA drives ship new with 5-year warranties at aggressive pricing. At $25.00/TB they are often the best $/TB in this capacity.

$/TB ▲Brand / ModelCapInterfaceTechCacheSectorWtyPriceCond.90DBuy
👑$25.00
↓ vs 30d avg
MDD
20TB SATA 7200RPM NAS
MD20TS25672NAS
CMR · 5yr
20TB
SATA-6G
7,200 RPM
CMR256MB512e5yr$499.99newBuy →Details▼
👑$25.00
↓ vs 30d avg
MDD
20TB SATA 7200RPM NAS
MD20TSATA25672NAS
Refurb · CMR · 5yr
20TB
SATA-6G
7,200 RPM
CMR256MB512e5yr$499.99REFURBBuy →Details▼

Drive Specifications

MDD 20TB SATA 7200RPM NAS
MD20TS25672NAS
$25.00/TB
$499.99 total
Capacity
20TB
Interface
SATA-6G
Form Factor
3.5"
Recording
CMR
RPM
7,200
Cache
256MB
Sector Size
512e
Workload
550TB/yr
Warranty
5 years
MDD 20TB SATA 7200RPM NAS
MD20TSATA25672NAS
REFURB
$25.00/TB
$499.99 total
Capacity
20TB
Interface
SATA-6G
Form Factor
3.5"
Recording
CMR
RPM
7,200
Cache
256MB
Sector Size
512e
Workload
550TB/yr
Warranty
5 years

Other MDD SATA capacities

2TB3TB6TB10TB12TB14TB18TB20TB

Other brands at 20TB SATA

MDDSeagateSynologyWD

Frequently Asked Questions

MDD enterprise 20TB SATA drives listed here use CMR recording and are safe for RAID. Always verify by model number if purchasing from a third party.

MDD 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. 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.