Expert IT Leadership Blogs

A disaster recovery plan that has never been tested is a document, not a capability. This guide covers all four testing levels, tabletop exercises, walkthrough tests, functional simulations, and full-scale failover tests, what each involves operationally, how to build a testing calendar, and how to use post-test documentation with auditors and cyber insurers.

Over 90% of mid-size enterprises report losing more than $300,000 per hour during an outage, per the ITIC 2024 Hourly Cost of Downtime Survey. An IT disaster recovery plan isn't a binder on a shelf, it's a tested, role-assigned set of procedures that defines exactly what happens in the first minutes of an incident.

Microsoft guarantees 99.9% uptime for its applications, not your data. Under the Shared Responsibility Model, Microsoft is not responsible for data lost through user deletion, ransomware encryption, account compromise, or policy violations. Exchange has a 30-day default retention window. SharePoint and OneDrive recycle bins hold content for 93 days. Once those windows close or an account is deleted, the data is gone, there is no Microsoft-managed backup to call.