---
title: "Object Storage Uptime & Reliability"
description: "30-day and 90-day uptime rankings for the largest Object Storage providers. Independent measurement, no provider affiliation."
url: https://uptimeproject.org/category/object-storage/
built: 2026-11-06T12:58:15.145Z
---

# Object Storage Reliability Rankings

All 8 Object Storage providers ranked by 30-day availability. Independent measurement, no provider affiliation. Refreshed on every page load.

Object Storage services ranked by 30-day availability
| Rank | Provider | Status | 7d | 30d availability | 30d downtime | 90d |
| --- | --- | --- | --- | --- | --- | --- |
| Tied for 1 | [AWS S3 us-east-1](https://uptimeproject.org/service/aws-s3-us-east-1/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 1 | [AWS S3 eu-west-1](https://uptimeproject.org/service/aws-s3-eu-west-1/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 1 | [Backblaze B2](https://uptimeproject.org/service/backblaze-b2/) | Operational | 100.00% | 100.00% | 0 min | 99.99% |
| Tied for 1 | [Cloudflare R2](https://uptimeproject.org/service/cloudflare-r2/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 1 | [Google Cloud Storage us-central1](https://uptimeproject.org/service/gcp-storage-us-central1/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 1 | [Google Cloud Storage europe-west1](https://uptimeproject.org/service/gcp-storage-europe-west1/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 7 | [Azure Blob Storage East US](https://uptimeproject.org/service/azure-blob-eastus/) | Operational | 100.00% | 99.99% | 1 min+1 min degraded | 99.97% |
| Tied for 7 | [Azure Blob Storage West Europe](https://uptimeproject.org/service/azure-blob-westeurope/) | Operational | 100.00% | 99.99% | 0 min+3 min degraded | 99.99% |

## What does this measure?

Independent probes in five locations measure each service at per-check cadences: HTTP every minute, DNS every five minutes, TLS once an hour, storage every five to ten minutes. A minute is "up" only when a strict majority of reporting probes vote up; minutes with fewer than three reporting probes are excluded from the denominator. The 30-day availability above is the share of measured minutes flagged "up". Read the [full methodology](https://uptimeproject.org/methodology/) .