DatacenterDisk

MDD 6TB vs WD Red

Side-by-side spec and price comparison. Live data from Amazon US.

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Our Recommendation
👑
MDD 6TB SATA 6G 7200RPM 128MB Enterprise

MDD 6TB SATA 6G 7200RPM 128MB Enterprise wins on both price ($26.67/TB) and warranty (5 years).

Best $/TB: MDD
Best Warranty: MDD
Best for RAID: WD
Full Specification Comparison
Spec
MDD
6TB SATA 6G 7200RPM 128MB Enterprise
$26.67/TB
WD
Red Plus 6TB NAS
$59.78/TB
Brand
MDD
WD
Model
6TB SATA 6G 7200RPM 128MB Enterprise
Red Plus 6TB NAS
Series
MDD Enterprise
WD Red Plus
Part Number
MD6TSATA12872E
WD60EFRX
$/TB
👑$26.67
$59.78
Price
$159.99
$358.68
Condition
New
New
Capacity
6TB
6TB
Interface
SATA-6G
SATA-6G
Form Factor
3.5"
3.5"
Drive Type
HDD
HDD
Recording Tech
CMR
CMR
RPM
7,200
5,400
Cache
128MB
64MB
Sector Size
512e
512e
Workload Rating
—
180TB/yr
DWPD
N/A
N/A
Warranty
👑5 years
3 years
Workload Tier
nearline
nearline
In Stock
✓ In Stock
✓ In Stock
Buy
Buy on Amazon →
Buy on Amazon →
Workload Fit
Workload
MDD
WD
NAS Storage
●●●
●●●
Backup Target
●●●
●●●
OLTP Database
●
●
Cold Archive
●
●
Virtualization
●
●
AI/ML Storage
●
●
Buying Recommendation
Choose MDD 6TB SATA 6G 7200RPM 128MB Enterprise if:
  • ✓ You need maximum storage per dollar
  • ✓ You need 5-year warranty coverage for production
  • ✓ You need new-with-warranty for compliance or budgeting
Buy MDD →
Choose WD Red Plus 6TB NAS if:
  • ✓ You're building a RAID array and need guaranteed CMR compatibility
  • ✓ You need new-with-warranty for compliance or budgeting
Buy WD →

Frequently Asked Questions

MDD 6TB offers better value at $26.67/TB vs $59.78/TB - a 55% price difference. Factor in warranty length and workload rating when the price gap is small.

Mixing drives of different models in RAID is not recommended even if capacities match. Different firmware, error handling and seek patterns can cause rebuild issues. Use identical drives within the same RAID group for reliable operation.

MDD 6TB carries a longer 5-year warranty vs 3 years for WD Red. Longer warranty typically correlates with manufacturer confidence in reliability.

MDD 6TB is the better fit for NAS storage. It uses CMR recording which is safe for all RAID levels. SATA interface is compatible with all NAS platforms including Synology, QNAP and TrueNAS.