Microsoft 365 storage cleanup across your whole tenant
One TerraBytes scan reaches every corner of your Microsoft 365 estate (SharePoint, OneDrive and Teams) and flags every duplicate, outdated, oversized and risky file, with the cost shown in euros and CO₂. Reduce Microsoft 365 storage in one scan, without deleting anything by accident.
Why Microsoft 365 storage fills up
When your Microsoft 365 storage is full and the admin center keeps warning you to buy more, the real cause is rarely too much valuable content. Microsoft 365 runs on a pooled tenant quota that SharePoint, OneDrive and Teams all draw from at once, and every one of them quietly accumulates waste you are paying to store, secure and back up.
SharePoint keeps every version of every file by default and holds deleted items in two-stage recycle bins for up to 93 days. Teams files live inside SharePoint, so shared attachments and channel uploads pile onto the same quota. OneDrive accounts left behind by ex-employees sit untouched for years. Add duplicates, oversized media and ROT data (redundant, obsolete and trivial files), and a large share of your tenant is storage that serves no one.
A dedicated Microsoft 365 storage cleanup tool finds that waste for you. TerraBytes scans SharePoint, OneDrive and Teams in a single pass, ranks the biggest wins, and hands you a clear action plan instead of a bigger storage bill.
Your whole tenant, in one view
TerraBytes scans your entire Microsoft 365 estate and surfaces the storage you can safely reclaim, wherever it hides.
SharePoint sites
Runaway version history, empty and orphaned sites, and document libraries where bloat, not real content, is eating your quota. TerraBytes ranks each site by the space it can free.
OneDrive accounts
Personal storage that grows unchecked, including OneDrive accounts from people who have left. Classic ROT that is safe to archive or remove once flagged.
Teams files
Teams files live in SharePoint, so channel uploads and re-shared attachments quietly consume your tenant quota. We surface the Teams content driving up your storage.
Duplicates & risk
The same file uploaded to three places, giant videos and design files, plus unencrypted or personal data that creates GDPR exposure. We flag both the cost and the compliance risk.
Most of it is waste you can reclaim
Around 52% of enterprise data is “dark data”: stored, powered and paid for, but never used. Source: Veritas Databerg
See your whole storage estate in minutes, not weeks of manual auditing.
Cost and carbon shown on every result, so you fix the biggest wins first.
Private by design: your data never leaves your environment.
Nothing is deleted automatically; you set the keep, archive and delete rules.
How the Microsoft 365 cleanup works
1. Connect. Point TerraBytes at your Microsoft 365 tenant. It runs serverless and never moves your files.
2. Scan. One pass across your SharePoint sites, OneDrive accounts and Teams files flags duplicates, version bloat, ROT, oversized media and compliance risk, all against your pooled tenant quota.
3. Act. You get a prioritized action plan with the storage, euro and CO₂ impact of each item. Define rules to keep, archive or delete. You stay in control, nothing is removed automatically.
The result: a leaner tenant, a smaller Microsoft 365 storage bill, and a documented, defensible cleanup you can show to security, compliance and finance.
Go deeper on each workload
SharePoint storage cleanup →
Reduce SharePoint storage: version history, orphaned sites and ROT across every library.
OneDrive cleanup →
Reclaim space from OneDrive accounts, including those left by former employees.
Storage cleaner & optimizer →
The same scan beyond Microsoft 365: NetApp, NAS and local drives.
GDPR & ROT data cleanup →
Find and remediate risky, personal and unencrypted files across your tenant.
Microsoft 365 storage questions
Run a TerraBytes scan across your Microsoft 365 tenant. One pass covers SharePoint sites, OneDrive accounts and Teams files, flagging duplicates, old versions, oversized media, recycle-bin build-up and ROT data. It then shows the storage, euro and CO₂ impact of each finding so you can free up space safely, biggest wins first.
Microsoft 365 uses a pooled tenant quota. SharePoint sites, Teams files (which live in SharePoint), and each user's OneDrive all draw on your storage, along with version history, two-stage recycle bins and content left behind by former employees. TerraBytes shows exactly where that space is going across the whole tenant.
Yes. TerraBytes scans your entire Microsoft 365 estate in one pass: SharePoint document libraries, every OneDrive account and the files shared through Teams. Because Teams files are stored in SharePoint, one scan gives you a single, tenant-wide view of your storage waste.
No. TerraBytes flags and recommends. You decide what to keep, archive or delete using custom rules. Nothing is removed without your explicit action, so your Microsoft 365 cleanup stays fully under your control.