NewMicrosoft Purview · Exchange Online
Microsoft Purview: Data Lifecycle Management – Increase in expansion limit for auto expanding archive beyond 1.5TB
Archive mailboxes can now expand beyond the previous 1.5TB hard limit, preventing operational failures. Expansion beyond 1.5TB will be billed as a consumption-based feature at $0.25 per GB per month.
Action required: Review archive expansion policies and budget for consumption-based billing ($0.25/GB/month) when auto-expanding archives exceed 1.5TB.
Key dates
- TBD — preview (Feature status is 'In development')
Microsoft's description
Previously, auto expanding archive mailbox expansion was supported only up to 1.5 TB, after which mailboxes would become inoperative. Archive mailboxes can now automatically expand beyond the 1.5 TB limit, ensuring uninterrupted retention and enabling scalable archive growth as storage thresholds are reached. This capability will be offered as a consumption‑based feature for auto expanding archive beyond 1.5 TB and will be billed at $0.25 per GB per month (or $0.0082 per GB per day).