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343 points antov825 | 1 comments | 31 Aug 25 17:29 UTC | HN request time: 0s | source

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dang ◴[31 Aug 25 19:23 UTC] No.45086225[source]▶

HN uses two—one live and one backup, so we can fail over if there's a hardware issue or we need to upgrade something.

It's a nice pattern. Just don't make them clones of each other, or they might go BLAM at the same time!

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Edit: both these points are mentioned in the OP.

1. bpye ◴[31 Aug 25 21:04 UTC] No.45087078[source]▶

Whilst not as fatal as a failing SSD, AMD also had a fun errata where a CPU core would hang in CC6 after ~1044 days.

Use One Big Server (2022)