RAID 5 vs RAID 6: Which One Is Actually Safe in 2025?

[Oksana]

Parity RAID is still one of the best ways to balance cost, performance, and redundancy. But the real question in 2025 isn’t how RAID works, it’s whether RAID 5 is still safe or if RAID 6 should be the new default.
Our latest article by Vladyslav Savchenko for StarWind explains how rebuild times, URE risk, and drive size impact reliability, so you know when single parity is fine and when dual parity is essential. Read more here: https://starwind.com/s/xj

[travisdh1]

@Oksana said in RAID 5 vs RAID 6: Which One Is Actually Safe in 2025?:

Parity RAID is still one of the best ways to balance cost, performance, and redundancy. But the real question in 2025 isn’t how RAID works, it’s whether RAID 5 is still safe or if RAID 6 should be the new default.
Our latest article by Vladyslav Savchenko for StarWind explains how rebuild times, URE risk, and drive size impact reliability, so you know when single parity is fine and when dual parity is essential. Read more here: https://starwind.com/s/xj

@scottalanmiller You might want to chime in here.

We've covered the issues with parity RAIDs on old style HDD here so much. No where in the article did I see mention of the glaring differences between HDD and SSD/NVMe.