DatacenterDisk

HGST 1.2TB vs Seagate 1.2TB

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

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Our Recommendation
👑
Seagate 1.2TB 10K SAS 12G 2.5

Seagate 1.2TB 10K SAS 12G 2.5 offers the best value at $40.00/TB. As a refurb unit, verify SMART data on arrival.

Best $/TB: Seagate
Best Warranty: Seagate
Best for RAID: Seagate
Full Specification Comparison
Spec
HGST
1.2TB 10K SAS 12G 2.5
$45.00/TB
Seagate
1.2TB 10K SAS 12G 2.5
$40.00/TB
Brand
HGST
Seagate
Model
1.2TB 10K SAS 12G 2.5
1.2TB 10K SAS 12G 2.5
Series
Ultrastar
Enterprise
Part Number
HUC101212CSS600
ST1200MM0129
$/TB
$45.00
👑$40.00
Price
$54.00
$48.00
Condition
New
Refurb
Capacity
1.2TB
1.2TB
Interface
SAS-12G
SAS-12G
Form Factor
2.5"
2.5"
Drive Type
HDD
HDD
Recording Tech
CMR
CMR
RPM
10,000
10,000
Cache
—
—
Sector Size
512e
512e
Workload Rating
—
—
DWPD
N/A
N/A
Warranty
—
—
Workload Tier
oltp
oltp
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 1.2TB 10K SAS 12G 2.5 if:
  • ✓ You need new-with-warranty for compliance or budgeting
Buy HGST →
Choose Seagate 1.2TB 10K SAS 12G 2.5 if:
  • ✓ You need maximum storage per dollar
  • ✓ You're building a RAID array and need guaranteed CMR compatibility
  • ✓ You're comfortable with datacenter refurb to maximize savings
Buy Seagate →

Frequently Asked Questions

Seagate 1.2TB offers better value at $40.00/TB vs $45.00/TB - a 11% 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 similar warranty terms and are built for enterprise operation. Check brand-specific AFR data and Backblaze drive stats for real-world failure rate comparisons.

HGST 1.2TB 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.