DatacenterDisk

Seagate Exos vs WD WD

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

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Our Recommendation
👑
Seagate Exos X16 16TB

Seagate Exos X16 16TB wins on both price ($21.87/TB) and warranty (5 years).

Best $/TB: Seagate
Best Warranty: WD
Best for RAID: WD
Full Specification Comparison
Spec
Seagate
Exos X16 16TB
$21.87/TB
WD
WD Red Pro 16TB WD161KFGX
$44.06/TB
Brand
Seagate
WD
Model
Exos X16 16TB
WD Red Pro 16TB WD161KFGX
Series
Exos X
WD Red Pro
Part Number
ST16000NM001G
WD161KFGX
$/TB
👑$21.87
$44.06
Price
$349.99
$704.99
Condition
New
New
Capacity
16TB
16TB
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
512MB
Sector Size
512e
—
Workload Rating
👑550TB/yr
👑550TB/yr
DWPD
N/A
N/A
Warranty
👑5 years
👑5 years
Workload Tier
nearline
nas
In Stock
Check
✓ In Stock
Buy
Buy on Amazon →
Buy on Amazon →
Workload Fit
Workload
Seagate
WD
NAS Storage
●●●
●●●
Backup Target
●●●
●●●
OLTP Database
●
●
Cold Archive
●●●
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Virtualization
●
●
AI/ML Storage
●●
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Buying Recommendation
Choose Seagate Exos X16 16TB if:
  • ✓ You need maximum storage per dollar
  • ✓ Your server runs 24/7 under heavy sustained load
  • ✓ You need new-with-warranty for compliance or budgeting
  • ✓ You need high-density storage for bulk/archive workloads
Buy Seagate →
Choose WD WD Red Pro 16TB WD161KFGX if:
  • ✓ You need 5-year warranty coverage for production
  • ✓ You're building a RAID array and need guaranteed CMR compatibility
  • ✓ Your server runs 24/7 under heavy sustained load
  • ✓ You need new-with-warranty for compliance or budgeting
Buy WD →

Frequently Asked Questions

Seagate Exos offers better value at $21.87/TB vs $44.06/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 Exos 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.