DatacenterDisk

Seagate IronWolf vs WD Ultrastar

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

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Our Recommendation
👑
Seagate IronWolf 10TB NAS ST10000VN0004

Seagate IronWolf 10TB NAS ST10000VN0004 balances price ($41.52/TB), warranty (3 years), and 180TB/yr workload rating for the best overall value.

Best $/TB: WD
Best Warranty: Seagate
Best for RAID: Seagate
Full Specification Comparison
Spec
Seagate
IronWolf 10TB NAS ST10000VN0004
$41.52/TB
WD
Ultrastar 10TB SATA HUH721010ALE600
$37.90/TB
Brand
Seagate
WD
Model
IronWolf 10TB NAS ST10000VN0004
Ultrastar 10TB SATA HUH721010ALE600
Series
IronWolf
Ultrastar HC510
Part Number
ST10000VN0004
HUH721010ALE600
$/TB
$41.52
👑$37.90
Price
$415.23
$379.00
Condition
New
New
Capacity
10TB
10TB
Interface
SATA-6G
SATA-6G
Form Factor
3.5"
3.5"
Drive Type
HDD
HDD
Recording Tech
CMR
CMR
RPM
7,200
7,200
Cache
256MB
256MB
Sector Size
—
512e
Workload Rating
180TB/yr
—
DWPD
N/A
N/A
Warranty
3 years
—
Workload Tier
nas
nearline
In Stock
✓ In Stock
✓ In Stock
Buy
Buy on Amazon →
Buy on Amazon →
Workload Fit
Workload
Seagate
WD
NAS Storage
●●●
●●●
Backup Target
●●●
●●●
OLTP Database
●
●
Cold Archive
●●
●●
Virtualization
●
●
AI/ML Storage
●
●
Buying Recommendation
Choose Seagate IronWolf 10TB NAS ST10000VN0004 if:
  • ✓ You need 3-year warranty coverage for production
  • ✓ You're building a RAID array and need guaranteed CMR compatibility
  • ✓ You need new-with-warranty for compliance or budgeting
Buy Seagate →
Choose WD Ultrastar 10TB SATA HUH721010ALE600 if:
  • ✓ You need maximum storage per dollar
  • ✓ You need new-with-warranty for compliance or budgeting
Buy WD →

Frequently Asked Questions

WD Ultrastar offers better value at $37.90/TB vs $41.52/TB - a 9% 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.

Seagate IronWolf carries a longer 3-year warranty vs unknown years for WD Ultrastar. Longer warranty typically correlates with manufacturer confidence in reliability.

Seagate IronWolf 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.