Site collection is unused with more than 1 GB

Last updated Oct 17, 2026 Policies Licences & Costs

AI summary

SharePoint site collections that have not been used for more than 90 days and exceed 1 GB in size waste shared storage space and can still appear in search results and Copilot answers. Contact site owners to confirm whether the site is still needed, then archive or delete unused sites to free up storage.

Severity: Medium Costs Recommended Generally available

What it detects

Shows sites which have not been used in last 90 days and are larger than 1 GB.

Why it matters

A site nobody has used for 90 days that holds more than 1 GB takes space from the storage all your sites share, and its content can still show up in search and Microsoft 365 Copilot answers. Ask the owners whether it is still needed, then archive it with the Archive SharePoint Site automation or delete it.

The rule

Every Site Collection where Last Used is more than 90 days ago and Storage used more than 1 GB

In Rencore Governance

Details

Applies to	Site collection
Connector	SharePoint
Severity	Medium
Category	Costs
Recommended	Yes
Recommended automation	None
License type	Standard

Other policies that check Site collection objects:

Confidential site referenced in Copilot agent (High)
Unused classic sites (Low)
SharePoint extranet sites (Information)
Classic sites (Information)
SharePoint site is inactive for more than 90 days (Medium)
Site collections with subsites (Information)
SharePoint site collection lacks sensitivity label (Medium)
SharePoint site collections near storage limit (High)
SharePoint site collections with disabled owners accounts (Low)
SharePoint site collection is owned by external users (High)
SharePoint site collections with less than 2 site owners (Medium)
SharePoint site collections without any owners (Medium)
SharePoint site collection contains more than 10 agents (Medium)
Sites that have no hubsite configured (Information)
Site collection is near subsite limit (Low)
Site collection is near the list/library limit (Low)
Site collections has reached the list/library limit (Medium)
Site collection has reached the subsite limit (Medium)

Frequently asked questions

What does the site collection is unused with more than 1 GB policy detect?

The Site collection is unused with more than 1 GB policy shows sites which have not been used in the last 90 days and are larger than 1 GB.

Which objects does the site collection is unused with more than 1 GB policy check?

The Site collection is unused with more than 1 GB policy checks Site collection objects from the SharePoint inventory and reports each one that matches its rule as a violation.

How severe is a violation of the site collection is unused with more than 1 GB policy?

Violations of the Site collection is unused with more than 1 GB policy have Medium severity. The policy is in the Costs category.

Which module includes the site collection is unused with more than 1 GB policy?

The Site collection is unused with more than 1 GB policy comes with the SharePoint connector in the Digital Workplace module of Rencore Governance, which every Plan includes.

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