TrueNAS proves that the TLC premium isn't worth it for your next NAS SSD
TrueNAS has published an analysis arguing that QLC NAND SSDs are a viable and cost-effective alternative to TLC drives for NAS applications. The company contends that OpenZFS write handling mitigates QLC's typical performance weaknesses in read-heavy and bursty workloads. This makes QLC suitable for bulk storage pools used for media archives and backups where data is written once and read often.
- ▪TrueNAS argues that QLC NAND performs better than its specifications suggest when used with OpenZFS in NAS environments.
- ▪QLC drives offer higher density and lower cost per terabyte compared to TLC drives, despite having slower native writes and fewer program/erase cycles.
- ▪The performance drawbacks of QLC are minimal for capacity-bound workloads such as media libraries and backup targets that are written once and read frequently.
- ▪Consumer QLC endurance ratings are sufficient for bulk storage pools because routine ZFS scrubs only read data, reducing wear on the drive.
- ▪OpenZFS shapes write operations before they reach the drive, which helps manage the latency and speed cliffs associated with QLC technology.
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| Original publisher | XDA Developers |
| Canonical URL | https://www.xda-developers.com/truenas-proves-that-the-tlc-premium-isnt-worth-it-for-your-next-nas-ssd/ |
| Publication time | Sat, 26 Sep 2026 20:30:17 GMT |
| Retrieval time | 2026-09-26T20:30:40.244Z |
| Last seen | 2026-09-26T20:30:40.244Z |
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| Cluster | tq5k8zuRC7oB · 1 stories |
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Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
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{ "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": "1", "name": "Home", "item": "https://www.xda-developers.com/" }, { "@type": "ListItem", "position":"2", "name": "Storage", "item": "https://www.xda-developers.com/storage/" }, { "@type": "ListItem", "position":"3", "name": "TrueNAS proves that the TLC premium isn't worth it for your next NAS SSD", "item": "https://www.xda-developers.com/truenas-proves-that-the-tlc-premium-isnt-worth-it-for-your-next-nas-ssd/" } ] } TrueNAS proves that the TLC premium isn't worth it for your next NAS SSD By Ty Sherback Published Sep 26, 2026, 4:30 PM EDT His love of PCs and their components was born out of trying to squeeze every ounce of performance out of the family computer.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at XDA Developers.
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