OneDrive vs Proton Drive——どっちが優秀？
OneDriveを選ぶべき人: Word・Excel・Outlookとシームレスに動くクラウドストレージが欲しいMicrosoft 365ユーザー
Proton Driveを選ぶべき人: Proton Mailを信頼済みで、同じZero-Knowledgeアプローチでファイルも暗号化したいプライバシー第一のユーザー
私たちの見解: OneDrive for simplicity, Proton Drive for power users.
| OneDrive | Proton Drive | |
|---|---|---|
| 料金 | 5 GB free | Microsoft 365 Basic $1.99/mo (100 GB) | Free 1GB (5GB with Proton account) | Drive Plus $3.99/mo (200GB) |
| 機能 | Deep Microsoft 365 integration, Personal Vault for sensitive files, Real-time co-authoring in Office apps, Ransomware detection and recovery, Photo management and memories | End-to-end encrypted file storage and sharing, Zero-access encryption — even Proton cannot read your files, Built-in photo backup from mobile, Integrates with Proton Mail, Calendar, and VPN, Open-source clients audited by third parties |
| こんな人に最適 | Microsoft 365 users who want cloud storage that works seamlessly with Word, Excel, and Outlook | Privacy-first users who already trust Proton Mail and want their files encrypted with the same zero-knowledge approach |
| 学習コスト | 簡単 | 簡単 |
本当の違い
Both offer free tiers, so the real question is what you get when you start paying.
OneDrive stands out with Deep Microsoft 365 integration and Personal Vault for sensitive files. Proton Drive counters with End-to-end encrypted file storage and sharing and Zero-access encryption — even Proton cannot read your files.
OneDrive's Achilles heel: sync client can be flaky — conflict files and mysterious sync failures still plague power users. Proton Drive's: storage amounts are small for the price — 200gb for $4/mo when google gives you 100gb for $2/mo. Pick whichever weakness you can live with.
結論
If you value deep microsoft 365 integration and word・excel・outlookとシームレスに動くクラウドストレージが欲しいmicrosoft 365ユーザー, go with OneDrive. If proton mailを信頼済みで、同じzero-knowledgeアプローチでファイルも暗号化したいプライバシー第一のユーザー matters more, Proton Drive is your pick. Neither is a bad choice — but one will fit your workflow better.