Understand what keeps IT running.
Understand how servers, storage, hypervisors and operating systems work together—and how to maintain them responsibly. Learn the concepts, practice the decisions, and verify recovery.
Hardware / Storage / Virtualization / Windows Server / Active Directory / Group Policy / Maintenance / Recovery
Healthy host ≠ verified applicationFrom physical hardware to service recovery.
Seven connected guides take you from physical infrastructure and virtualization through Windows Server, AD DS, Group Policy, change management and recovery. Start anywhere or follow the complete Systems Administration Foundations journey.
Server Hardware & Storage Fundamentals
Understand server components, failure domains, physical drive evidence, RAID calculations and safe replacement decisions.
Virtualization Fundamentals
Follow VMs through hosts, datastores, networking, snapshots and maintenance-mode migration decisions.
Server Maintenance & Change Management
Prepare patch windows, examine Linux service evidence, obtain approvals, manage rollback and prove application recovery.
Windows Server Fundamentals
Trace server roles, features, services, administration tools, and dependent business workflows in a new interactive Northstar Server Dependency Explorer.
Active Directory Domain Services Fundamentals
Understand forests, domains, domain controllers, OUs, DNS discovery, Kerberos, replication and FSMO roles with an interactive Northstar directory evidence explorer.
Group Policy Fundamentals
Predict LSDOU processing, security filtering, Enforced links, Block Inheritance and loopback modes in an interactive GPO Processing Explorer.
Backup & Restore Readiness: From Backup Jobs to Recovery
Trace RPO/RTO, backup chains, immutability, Veeam/Datto examples and recovery verification in an interactive guide.
Follow your curiosity.
Every topic has a dedicated home. Switch subjects whenever you want—or use a Learning Path for a guided sequence.
Networking
Understand the network, not just the configuration.
Explore topic Topic 02Cybersecurity
Build security knowledge from the ground up.
Explore topic Topic 03Microsoft
Turn admin concepts into practical understanding.
Explore topic Topic 05Certifications
Work toward certifications. Build skills that last.
Explore topic Topic 06Programming
Understand code by writing and testing it.
Explore topicFrom Windows Server to Active Directory and Group Policy.
Follow the new Windows Server Administration path across three connected lessons and their Practice clinics. Systems Administration Foundations remains available above.