DatacenterDisk

Seagate Nytro vs WD Ultrastar

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

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Our Recommendation
👑
WD Ultrastar DC SN655 15.36TB U.3

WD Ultrastar DC SN655 15.36TB U.3 wins on both price ($123.63/TB) and warranty (5 years).

Best $/TB: WD
Best Warranty: WD
Best for RAID: Seagate
Full Specification Comparison
Spec
Seagate
Nytro 5060 E3.S 15.36TB
$245.30/TB
WD
Ultrastar DC SN655 15.36TB U.3
$123.63/TB
Brand
Seagate
WD
Model
Nytro 5060 E3.S 15.36TB
Ultrastar DC SN655 15.36TB U.3
Series
Nytro 5060
Ultrastar DC SN655
Part Number
XP15360SE70045
WUS5EA1A1ESP7E1
$/TB
$245.30
👑$123.63
Price
$3767.76
$1899.00
Condition
New
New
Capacity
15.36TB
15.36TB
Interface
NVMe-PCIe4
NVMe-PCIe4
Form Factor
E3.S
U.3
Drive Type
SSD
SSD
Recording Tech
TLC
TLC
RPM
N/A (SSD)
N/A (SSD)
Cache
—
—
Sector Size
—
—
Workload Rating
—
—
DWPD
1 DWPD
1 DWPD
Warranty
👑5 years
👑5 years
Workload Tier
oltp
oltp
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 Nytro 5060 E3.S 15.36TB if:
  • ✓ You need new-with-warranty for compliance or budgeting
Buy Seagate →
Choose WD Ultrastar DC SN655 15.36TB U.3 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 WD →

Frequently Asked Questions

WD Ultrastar offers better value at $123.63/TB vs $245.30/TB - a 50% 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.

Both drives carry 5-year warranties and are built for enterprise operation. Check brand-specific AFR data and Backblaze drive stats for real-world failure rate comparisons.

Seagate Nytro is the better fit for NAS storage.