nexus/sreweekly/markdown/70/09-four-nines-failure-rates-will-the-cloud-ever-cut-it-for-transactional.md

# Four nines & failure rates – will the cloud ever cut it for transactional banking?

- **期号**: SRE Weekly Issue #70（2017-04-30）
- **作者**: —
- **链接**: https://www.wandisco.com/news-events/blog/four-nines-failure-rates-will-the-cloud-ever-cut-it-for-transactional-banking-

## 简介

Here’s a pretty excellent analysis of why adopting the cloud can be difficult for banks. Just skip past the bit with the incorrect uptime calculation, since four nines of uptime actually equates to about 53 minutes’ downtime per year, not 9 hours.

## 正文

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