ZFS vs. Hardware RAID: Experts Slap Down Controller Reliability, Citing Port Counts Over Clock Speeds
DIY NAS builds favor software RAID over hardware RAID due to controller Single Point of Failure risks. Furthermore, motherboard selection is dictated by available SATA ports, not CPU power, for achieving necessary drive count.
The conflict centers on reliability: Side A warns that modular external setups risk physical failures from loose cables or ground loops. Side B continues to doubt USB's suitability for always-on RAID storage. While some push for hardware RAID, experts like Badabinski and Dran_Arcana strongly argue for resilient software stacks like ZFS or Btrfs.
The consensus points toward software solutions for superior resilience. The physical limitations of connecting many drives outweigh raw processing power. The primary battlegrounds are physical connection methods, forcing users to weigh external cage compromises (frongt) against enclosed chassis solutions (greyscale).
Key Points
Software RAID (ZFS/Btrfs) beats hardware RAID for resilience.
Badabinski noted hardware RAID failure requires matching firmware cards, while Dran_Arcana cites software's inherent resilience and performance edge over dedicated controllers.
Motherboard constraint is SATA/NVMe ports, not CPU benchmarks.
hperrin stated the port count is the definitive technical limiter for low-power media PCs.
Modular external storage setups are physically risky.
MuttMutt warned that multiple external cables significantly increase vulnerability to disconnection and ground loops.
Low throughput is less scary than connection architecture.
cenzorrll calculated that standard USB 3.0 can handle three 7200 RPM drives without maxing the 5 Gbps connection.
Proper enclosure chassis beats cobbled-together external hacks.
greyscale advised building a dedicated NAS unit into a professional chassis rather than relying on external dongles.
Source Discussions (3)
This report was synthesized from the following Lemmy discussions, ranked by community score.