DatacenterDisk

HGST Ultrastar vs HP 834031-B21

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

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Our Recommendation
👑
HGST Ultrastar He8 8TB SAS 12G NAS

HGST Ultrastar He8 8TB SAS 12G NAS balances price ($36.13/TB), warranty (5 years), and enterprise reliability for the best overall value.

Best $/TB: HP
Best Warranty: HGST
Best for RAID: HP
Full Specification Comparison
Spec
HGST
Ultrastar He8 8TB SAS 12G NAS
$36.13/TB
HP
834031-B21 8TB SAS LFF
$32.75/TB
Brand
HGST
HP
Model
Ultrastar He8 8TB SAS 12G NAS
834031-B21 8TB SAS LFF
Series
Ultrastar He
ProLiant OEM
Part Number
HUH728080AL5200
834031-B21
$/TB
$36.13
👑$32.75
Price
$289.00
$262.00
Condition
New
New
Capacity
8TB
8TB
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
512e
512e
Workload Rating
—
—
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
HP
NAS Storage
●●
●●
Backup Target
●●●
●●●
OLTP Database
●
●
Cold Archive
●●
●●
Virtualization
●
●
AI/ML Storage
●
●
Buying Recommendation
Choose HGST Ultrastar He8 8TB SAS 12G NAS if:
  • ✓ You need 5-year warranty coverage for production
  • ✓ You need new-with-warranty for compliance or budgeting
Buy HGST →
Choose HP 834031-B21 8TB SAS LFF if:
  • ✓ You need maximum storage per dollar
  • ✓ You're building a RAID array and need guaranteed CMR compatibility
  • ✓ You need new-with-warranty for compliance or budgeting
Buy HP →

Frequently Asked Questions

HP 834031-B21 offers better value at $32.75/TB vs $36.13/TB - a 9% 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.

HGST Ultrastar carries a longer 5-year warranty vs unknown years for HP 834031-B21. Longer warranty typically correlates with manufacturer confidence in reliability.

HGST Ultrastar 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.