---
title: "Uptime"
description: "1 posts about Uptime, summarised, each linking to the original."
---

# Uptime
> 1 posts about Uptime, summarised, each linking to the original.

## Articles

### [What does 99.9% uptime mean for inference?](https://yomu.fyi/post/what-does-99-9-uptime-mean-for-inference.md)
- Company: [Together AI](https://yomu.fyi/company/together-ai.md)
- Published: Jul 16, 2026
- Type: Explainer

The post defines three inference reliability tiers by the failure domains each must survive: 99% requires surviving node-level GPU failures like ECC errors and thermal throttling through automated health checks and fast replica replacement within a single data center. 99.9% requires surviving a full data-center failure by deploying weights across two facilities with enough capacity on each side and routing live traffic to both continuously, not a cold standby. 99.99% requires multi-region deployment with AZ redundancy and reserved failover capacity. The authors argue that vague SLA definitions hide which failure domains are covered, and that infrastructure ownership—whether a provider controls its hardware or rents from a hyperscaler—determines how quickly failures are resolved.