DatacenterDisk

MDD 18TB SATA Enterprise HDD - Prices

4 drives tracked. From $21.67/TB. Updated every 4 hours.

Buy or Skip?
✓ Buy if: you want 1% below-average pricing on 18TB MDD drives. New with 5-year warranty.
✗ Skip if: you need higher workload rating than 550TB/year.
Buy on Amazon → $389.99
Best $/TB
$21.67
Drives
4
Condition
New

At $21.67/TB, MDD 18TB SATA drives are $2.74/TB cheaper than the 18TB SATA category average of $24.41/TB — strong value at this capacity.

MDD 18TB SATA - worth it?

MDD MaxDigitalData 18TB SATA drives ship new with 5-year warranties at aggressive pricing. At $21.67/TB they are often the best $/TB in this capacity.

$/TB ▲Brand / ModelCapInterfaceTechCacheSectorWtyPriceCond.90DBuy
👑$21.67
~ Fair
MDD
18TB SATA 6G 7200RPM NAS
MD18TSATA25672NAS
CMR · 5yr
18TB
SATA-6G
7,200 RPM
CMR256MB512e5yr$389.99new▲Buy →Details▼
👑$21.67
~ Fair
MDD
18TB SATA 7200RPM Enterprise
MDD18TSATA25672E
CMR · 5yr
18TB
SATA-6G
7,200 RPM
CMR256MB512e5yr$389.99new▲Buy →Details▼
$22.22
~ Fair
MDD
18TB SATA 7200RPM NAS
MDD18TS25672NAS
CMR · 5yr
18TB
SATA-6G
7,200 RPM
CMR256MB512e5yr$399.99new▲Buy →Details▼
$—
MDD
18TB SATA 7200RPM 5yr Warranty
MDD18TSATA25672E
CMR · 5yr
18TB
SATA-6G
7,200 RPM
CMR256MB512e5yr$——Buy →Details▼

Other MDD SATA capacities

2TB3TB6TB10TB12TB18TB20TB

Other brands at 18TB SATA

MDDSeagateToshibaWD

Frequently Asked Questions

MDD enterprise 18TB SATA drives listed here use CMR recording and are safe for RAID. Always verify by model number if purchasing from a third party.

MDD 18TB 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.

New MDD 18TB SATA drives with manufacturer warranty. Recommended for production NAS and primary storage.

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
18TB 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 18TB per drive, a 60-bay JBOD delivers 1080TB 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 9 hours for 18TB. 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 18TB 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.