DatacenterDisk

Seagate Exos vs WD Red

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

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Our Recommendation
👑
Seagate Exos X22 22TB

Seagate Exos X22 22TB wins on both price ($29.55/TB) and warranty (5 years).

Best $/TB: Seagate
Best Warranty: Seagate
Best for RAID: WD
Full Specification Comparison
Spec
Seagate
Exos X22 22TB
$29.55/TB
WD
Red Pro 22TB NAS WD221KFGX
$43.18/TB
Brand
Seagate
WD
Model
Exos X22 22TB
Red Pro 22TB NAS WD221KFGX
Series
Exos X22
WD Red Pro
Part Number
ST22000NM001E
WD221KFGX
$/TB
👑$29.55
$43.18
Price
$649.99
$949.99
Condition
New
New
Capacity
22TB
22TB
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
—
512MB
Sector Size
—
—
Workload Rating
—
—
DWPD
N/A
N/A
Warranty
5 years
—
Workload Tier
—
nas
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 Exos X22 22TB if:
  • ✓ You need maximum storage per dollar
  • ✓ You need 5-year warranty coverage for production
  • ✓ You need new-with-warranty for compliance or budgeting
  • ✓ You need high-density storage for bulk/archive workloads
Buy Seagate →
Choose WD Red Pro 22TB NAS WD221KFGX if:
  • ✓ You're building a RAID array and need guaranteed CMR compatibility
  • ✓ You need new-with-warranty for compliance or budgeting
  • ✓ You need high-density storage for bulk/archive workloads
Buy WD →

Frequently Asked Questions

Seagate Exos offers better value at $29.55/TB vs $43.18/TB - a 32% 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 Exos carries a longer 5-year warranty vs unknown years for WD Red. Longer warranty typically correlates with manufacturer confidence in reliability.

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.