DatacenterDisk

HGST 4TB vs Seagate Enterprise

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

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Our Recommendation
👑
Seagate Enterprise Capacity 4TB SAS 12G 512n

Seagate Enterprise Capacity 4TB SAS 12G 512n balances price ($37.53/TB), warranty (5 years), and 550TB/yr workload rating for the best overall value.

Best $/TB: HGST
Best Warranty: Seagate
Best for RAID: Seagate
Full Specification Comparison
Spec
HGST
4TB SAS 12G LFF Renewed
$20.00/TB
Seagate
Enterprise Capacity 4TB SAS 12G 512n
$37.53/TB
Brand
HGST
Seagate
Model
4TB SAS 12G LFF Renewed
Enterprise Capacity 4TB SAS 12G 512n
Series
Ultrastar
Enterprise Capacity
Part Number
HUS724040ALS640
ST4000NM0025
$/TB
👑$20.00
$37.53
Price
$79.99
$150.13
Condition
New
New
Capacity
4TB
4TB
Interface
SAS-12G
SAS-12G
Form Factor
3.5"
3.5"
Drive Type
HDD
HDD
Recording Tech
CMR
CMR
RPM
7,200
7,200
Cache
—
128MB
Sector Size
512n
512n
Workload Rating
—
550TB/yr
DWPD
N/A
N/A
Warranty
—
5 years
Workload Tier
nearline
nearline
In Stock
✓ In Stock
✓ In Stock
Buy
Buy on Amazon →
Buy on Amazon →
Workload Fit
Workload
HGST
Seagate
NAS Storage
●●
●●
Backup Target
●●●
●●●
OLTP Database
●
●
Cold Archive
●
●
Virtualization
●
●
AI/ML Storage
●
●
Buying Recommendation
Choose HGST 4TB SAS 12G LFF Renewed if:
  • ✓ You need maximum storage per dollar
  • ✓ You need new-with-warranty for compliance or budgeting
Buy HGST →
Choose Seagate Enterprise Capacity 4TB SAS 12G 512n 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 Seagate →

Frequently Asked Questions

HGST 4TB offers better value at $20.00/TB vs $37.53/TB - a 47% 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 Enterprise carries a longer 5-year warranty vs unknown years for HGST 4TB. Both are enterprise-grade drives built for 24/7 operation.

HGST 4TB is the better fit for NAS storage. It uses CMR recording which is safe for all RAID levels. SAS interface requires a SAS HBA or SAS-capable NAS.