Looking for an honest Asustor Flashstor 6 vs Synology DS1522+ 5-Bay DiskStation comparison in 2026? We scored both nas storage on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the Synology DS1522+ 5-Bay DiskStation comes out ahead 50/100 to 55/100 — a 5-point gap. On price the Synology DS1522+ 5-Bay DiskStation undercuts the Asustor Flashstor 6 by 75% ($399 vs $699), which materially changes the value calculus for budget-conscious buyers.
Asustor
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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.
Picking Synology DS1522+ 5-Bay DiskStation over Asustor Flashstor 6 means trading these off.
Nichts Wesentliches — die Spezifikationen sind ungefähr gleich
$699
Scores are relative within the nas storagecategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
✗ Cons
✓ Pros
| Spec | Asustor Flashstor 6 | Synology DS1522+ 5-Bay DiskStationW |
|---|---|---|
| Price | 699$ | 399$✓ |
| RAM | 8GB | 8GB |
| OS | ADM 4.0 | DiskStation Manager (DSM) |
| Weight | 1100g | 1100g |
| Dimensions | 250 x 220 x 220 mm | 165 x 108 x 232 mm |
| Colors | Black | Black |
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.
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.
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.
No, Synology DS1522+ 5-Bay DiskStation scores higher (55 vs 50).
Synology DS1522+ 5-Bay DiskStation is cheaper at $399 vs $699 for 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.
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.
Reviewed by VersusMatrix Editorial Team
Last updated: June 1, 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.