Synology DS1522+ 5-Bay DiskStation vs Asustor Flashstor 6
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AI Matrix
Powered by Claude AISynology DS1522+ 5-Bay DiskStation narrowly beats the Asustor Flashstor 6 in the nas storage category, especially in value ($399 vs $699), scoring 55 vs 50. If you want the better overall nas storage, Synology DS1522+ 5-Bay DiskStation is the recommended choice.
3 Reasons Why Synology DS1522+ 5-Bay DiskStation Is Better
- 1.Lower price: $399 vs $699
- 2.Better value score: 82 vs 59
- 3.Higher overall score: 55 vs 50
What are you giving up?
Picking Synology DS1522+ 5-Bay DiskStation over Asustor Flashstor 6 means trading these off.
You give up
Nothing meaningful — Synology DS1522+ 5-Bay DiskStation matches or beats Asustor Flashstor 6 on every measured spec.
You gain
- +$300 cheaper ($399 vs $699)
Spec Comparison
Synology DS1522+ 5-Bay DiskStationAsustor Flashstor 6
Score Breakdown
Synology DS1522+ 5-Bay DiskStationAsustor Flashstor 6
35
Drive Bays25% weight
35Tie
82
Price20% weight
59Synology DS1522+ 5-Bay DiskStation Winner
10
RAM20% weight
10Tie
99
Power Usage15% weight
99Tie
94
Noise10% weight
94Tie
35
Warranty10% weight
35Tie
Scores are relative within the nas storagecategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
Synology DS1522+ 5-Bay DiskStation
Winner✓ Pros
- ●Lower price: $399 vs $699
- ●Better value for money
Asustor Flashstor 6
✗ Cons
- ●Higher price: $699 vs $399
- ●Higher price relative to value
Spec Comparison
| Spec | Synology DS1522+ 5-Bay DiskStationW | Asustor Flashstor 6 |
|---|---|---|
| Price | 399$✓ | 699$ |
| RAM | 8GB | 8GB |
| OS | DiskStation Manager (DSM) | ADM 4.0 |
| Weight | 1100g | 1100g |
| Dimensions | 165 x 108 x 232 mm | 250 x 220 x 220 mm |
| Colors | Black | Black |
Who Should Buy
Buy Synology DS1522+ 5-Bay DiskStation if…
Buy the Synology DS1522+ 5-Bay DiskStation if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
Buy Asustor Flashstor 6 if…
The Asustor Flashstor 6 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Synology DS1522+ 5-Bay DiskStation vs Asustor Flashstor 6 — FAQ
Synology DS1522+ 5-Bay DiskStation vs Asustor Flashstor 6: which is better?
Synology DS1522+ 5-Bay DiskStation narrowly beats the Asustor Flashstor 6 in the nas storage category, especially in value ($399 vs $699), scoring 55 vs 50. If you want the better overall nas storage, Synology DS1522+ 5-Bay DiskStation is the recommended choice.
Is Synology DS1522+ 5-Bay DiskStation better than Asustor Flashstor 6?
Yes, Synology DS1522+ 5-Bay DiskStation scores higher overall (46 vs 50).
Which is cheaper, Synology DS1522+ 5-Bay DiskStation or Asustor Flashstor 6?
Synology DS1522+ 5-Bay DiskStation is cheaper at $399 vs $699 for the Asustor Flashstor 6.
Who should buy the Synology DS1522+ 5-Bay DiskStation?
Buy the Synology DS1522+ 5-Bay DiskStation if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
Who should buy the Asustor Flashstor 6?
The Asustor Flashstor 6 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Related Comparisons
Full Synology DS1522+ 5-Bay DiskStation review →Full Asustor Flashstor 6 review →All Synology NAS Storage →All Asustor NAS Storage →
Reviewed by VersusMatrix Editorial Team
Last updated: April 25, 2026
Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.