RAID Explained: The Real Trade-offs of RAID 0/1/5

2026年10月9日

RAID is about availability, not backup. Internalize that and the choice becomes clear.

The truths

RAID 0: double speed and capacity, total loss on one failure — re-downloadable data only;
RAID 1: two mirrored drives at 50% capacity — the stable home choice;
RAID 5: 3+ drives at n-1 capacity, one drive can fail — but a second failure during rebuild kills everything.

For homes

2 bays: RAID 1 for irreplaceable photos and documents;
Re-downloadable media: single disk synced periodically to a second;
Iron law: RAID ≠ backup — deletion and ransomware aren’t what RAID defends against.

Related products: nas-rk3588. Manuals, firmware and SDKs are in the Hugsun Documentation Center; contact us via the website for volume / ODM programs.

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