Post #45308
2025-12-09 13:28 UTC
AWS offers an SLA of 99.9 availability, which it has usually exceeded each year. That means your server can’t be down more than ~8h per year to beat it. Your residential ISP (in a nearly optimal case) has a 15-30 min service period overnight every few weeks.
Hope your area gets less than ~3 hours of power outages per year or you’re going to be breaching your SLA before you even hit software.
Replies (1)
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@ysjet@lemmy.world 2025-12-09 17:30
Your ISP is kind of dogshit if it’s forcing 15-30m of downtime overnight every few weeks. And power outages are kind of a weird thing to focus on, you should be on a UPS anyway. In any case, someone interested in self-hosting email very likely has a redundant connection anyway. I’m not even hosting my own email and I have 5gb/mo of cellular backup in dual-WAN, and enough battery capacity to run my entire stack for several hours. Not to mention a generator to recharge them, if it comes down to that.