Disaster Recovery Course Requirements

This lesson explains what you need before beginning the Windows Server disaster recovery course. The goal is not to design a production recovery site yet. The goal is to prepare a realistic learning environment where you can practice the major disaster recovery concepts safely. Those concepts include backup and restore, System State recovery, Bare Metal Recovery, Hyper-V Replica, Storage Replica, failover clustering, recovery testing, and hybrid recovery options that may involve Microsoft Azure.

A disaster recovery course requires more than a server operating system. You need a lab machine or virtual environment, enough memory and storage to create test servers, basic networking, administrative privileges, and a willingness to test recovery procedures instead of merely reading about them.Disaster recovery is practical work. You learn it by building systems, breaking them in controlled ways, restoring them, and confirming that the restored system actually works.

The requirements in this lesson are divided into two categories. The first category is the student lab environment: what you need to follow along with the course. The second category is production guidance: what a real organization needs when it begins designing a recovery strategy for important Windows Server workloads. The lab requirements are intentionally smaller than production requirements, but they should still be realistic enough to demonstrate how recovery technologies behave.

Lab Environment Options

You can take this course with a single Windows Server virtual machine, but a two-server lab is much better. Disaster recovery normally involves at least two sides: a source system and a recovery system. The source system contains the workload that must be protected. The recovery system represents the target server, replica server, backup destination, or alternate location used after a failure.

Minimum Lab Setup: One Server

The minimum lab setup is one Windows Server 2022 or Windows Server 2025 virtual machine. This environment is sufficient for learning the basic vocabulary of disaster recovery, exploring Windows Server Backup, reviewing recovery tools, testing administrative commands, and studying the difference between file-level recovery, System State recovery, and full server recovery.

• One Windows Server 2022 or Windows Server 2025 virtual machine or physical server.
• At least 8 GB RAM allocated to the lab machine if possible.
• At least 100 GB of available storage for the operating system, updates, logs, test data, and backup files.
• Administrator access to the server.
• A broadband internet connection for updates, documentation, evaluation downloads, and optional Azure exercises.

A single-server lab is useful for the early lessons, but it has limits. You cannot fully simulate replication, failover, or multi-node recovery with only one server. You can still learn the terminology and perform basic backup and restore operations, but you will not see the full behavior of disaster recovery technologies that depend on more than one machine.

Recommended Lab Setup: Two Servers

The recommended lab setup is two Windows Server virtual machines. This allows one machine to act as the primary server and the second machine to act as a replica, backup target, or recovery server. With two servers, you can demonstrate more realistic disaster recovery patterns, including server-to-server replication, VM-level replication, and recovery testing after a simulated failure.

• Two Windows Server 2022 or Windows Server 2025 virtual machines.
• 16 GB or more RAM on the host machine, with more recommended if several virtual machines will run at the same time.
• 200 GB or more free storage on the host, especially if you plan to create checkpoints, virtual disks, backup sets, or replicated test data.
• A private virtual switch or internal network for server-to-server communication.
• Optional internet access for hybrid recovery, Azure Backup, Azure Site Recovery, or Azure Arc evaluation.

This two-server model is the best learning environment for the course because it teaches an important principle: disaster recovery is not only about backing up data. It is about restoring service. A backup file is not enough if the server cannot boot, the domain controller cannot authenticate users, the application cannot reach its data, or the network route to the restored service does not work.

Nested Virtualization

Students who do not have spare physical servers can use nested virtualization. Nested virtualization allows one virtualization host to run inside another virtual machine. For example, you may run Hyper-V inside a Windows Server VM, and then create additional virtual machines inside that nested Hyper-V host. This is useful for experimentation, but it requires a processor and virtualization platform that can expose Intel VT-x or AMD-V virtualization extensions to the guest operating system.

Nested virtualization is helpful, but it also adds complexity. Performance is lower than on physical hardware, and some storage or networking scenarios may not behave exactly like production systems. For learning purposes, nested virtualization is acceptable. For production disaster recovery design, use properly sized physical hosts, certified hardware, tested storage, redundant networking, and vendor-supported configurations.

Windows Server 2022 and Windows Server 2025 Hardware Requirements

The lab servers must meet the standard Windows Server hardware requirements before they can support disaster recovery features. Disaster recovery does not create a separate class of hardware requirements by itself. Instead, the server must first be able to run Windows Server reliably, and then it must have enough additional capacity for the recovery technology being tested.

Processor Requirements

A Windows Server 2025 system requires a 1.4 GHz 64-bit processor or faster, compatible with the x64 instruction set. The processor must support NX and DEP, CMPXCHG16b, LAHF/SAHF, PrefetchW, SSE4.2 with POPCNT, and Second Level Address Translation, also known as SLAT, EPT, or NPT. Modern Intel Xeon and AMD EPYC processors are commonly used in production environments, but a modern desktop or laptop processor is usually sufficient for a small lab.

SLAT is especially important when virtualization is involved. Hyper-V depends on hardware virtualization support, and many disaster recovery labs use virtual machines to represent protected servers and recovery servers. If the processor does not support the required virtualization extensions, the lab will be limited to basic installation and backup exercises.

Memory Requirements

Windows Server can be installed with small amounts of memory, but a useful disaster recovery lab needs more. The minimum memory requirement is 512 MB for Server Core and 2 GB for Desktop Experience. For a student lab, 8 GB is a practical minimum for one server, and 16 GB or more is recommended for a host running two or more virtual machines. Production servers often require 16 GB, 32 GB, 64 GB, or much more, depending on workloads.

ECC memory is recommended for physical servers because disaster recovery depends on reliability. A recovery host that introduces memory errors can create new problems during a restore. For a student lab, non-ECC desktop or laptop memory is acceptable, but the distinction is important when moving from lab exercises to production planning.

Storage Requirements

The minimum system partition requirement is 32 GB, but 64 GB or more is strongly recommended. A disaster recovery lab should have additional storage for virtual disks, backup files, recovery media, exported virtual machines, and test data. If the host has only enough space to install the operating system, it will not be useful for realistic recovery exercises.

Use PCI Express storage controllers and modern SSD or NVMe storage when possible. Avoid legacy PATA or IDE storage for boot and data drives. Additional space may also be needed for paging files, hibernation files, crash dumps, and large RAM configurations. In production, storage capacity planning must include retained backups, replicated data, snapshots, logs, and growth over time.

Network Requirements

A Windows Server system should have an Ethernet adapter with at least 1 Gbps throughput and PCI Express compliance. For a lab, a 1 Gbps virtual or physical network is usually enough. For production disaster recovery, the network must be sized for backup windows, replication traffic, recovery testing, management traffic, and user access after failover.

Network design becomes especially important when data is replicated between servers or sites. A backup may succeed over a slow link if the backup window is long enough. Synchronous replication has much stricter latency requirements because writes must be coordinated between source and target systems. This is one reason production disaster recovery planning must include both server sizing and network sizing.

Firmware, Secure Boot, and TPM 2.0

Modern Windows Server deployments should use UEFI firmware with Secure Boot support where possible. TPM 2.0 is important for BitLocker and Secured-core server features. A Secured-core server adds stronger protections such as DMA remapping through Intel VT-d or AMD-Vi, Kernel DMA Protection, and DRTM support.

These security features matter in disaster recovery because a recovered server should not return to service in a weakened state. A server restored after ransomware, theft, compromise, or storage failure should preserve the same security posture expected before the incident. Recovery is not only a data operation; it is also a trust operation.

Disaster Recovery-Specific Hardware Considerations

After the basic Windows Server requirements are met, the next question is which recovery technology will be used. Backup and restore, Hyper-V Replica, Storage Replica, failover clustering, and Azure Site Recovery all place different demands on CPU, memory, storage, and network capacity.

Storage Replica

Storage Replica provides block-level replication for disaster recovery. For lab purposes, it helps students understand the difference between copying files and replicating storage changes at the block level. In production, Storage Replica requires careful planning because storage performance and network latency directly affect replication behavior.

• Use identical storage volumes on the source and target in terms of size and capacity.
• Use dedicated log drives that are faster than the data drives. SSD or faster storage is recommended.
• Do not place other workloads on the log volumes.
• Plan for at least 1 Gbps Ethernet, with RDMA preferred in demanding environments.
• For synchronous replication, plan for low latency, commonly expressed as approximately 5 ms round-trip latency or less.

Storage Replica is one of the best examples of why lab minimums and production requirements differ. A lab can demonstrate the concept with small virtual disks and limited traffic. A production deployment must account for workload write volume, log performance, link reliability, replication mode, failover process, and recovery validation.

Hyper-V Replica

Hyper-V Replica provides virtual machine-level replication. Instead of replicating a physical server directly, it replicates selected virtual machines from one Hyper-V host to another. This is useful for learning how virtualization changes disaster recovery. The protected unit becomes the VM, and the recovery target becomes another Hyper-V host or cluster.

• Hyper-V hosts need SLAT-enabled processors and hardware virtualization support.
• At least 4 GB RAM is required for basic host operation, but more is needed for multiple VMs.
• Storage must be large enough to hold the primary VM, replica VM, recovery points, and test failover data.
• Network bandwidth must support initial replication and ongoing change replication.

Hyper-V Replica is useful in a course because it lets students practice planned failover, unplanned failover, test failover, and replica health review without purchasing a dedicated storage array. It also demonstrates that recovery testing is a normal part of DR design, not an optional extra.

Failover Clustering

Failover clustering provides high availability by allowing clustered roles to move between nodes. It is often discussed alongside disaster recovery, but it is not the same thing. High availability reduces downtime during local failures. Disaster recovery prepares for larger events that may affect an entire server, storage system, rack, site, or region.

• Use certified hardware that can pass the Cluster Validation Wizard.
• Use redundant networking and storage paths.
• Use shared storage, Storage Spaces Direct, or another supported cluster storage model.
• Use RDMA-capable networking where appropriate, especially for storage traffic.
• Use 10 Gbps or faster networking for demanding storage and cluster workloads.
• Plan cluster quorum and witness configuration carefully.

A course lab may only introduce clustering concepts, but production clustering requires careful validation. Hardware diversity, unsupported drivers, weak storage design, poor quorum configuration, or insufficient network capacity can create instability. A cluster should be tested before it protects important workloads.

Software Requirements

In addition to hardware, you need the right software tools. Some tools are part of Windows Server. Others are optional management or cloud tools. The purpose of this course is not to require every enterprise product, but to make sure the student understands the major tools used in modern Windows Server recovery planning.

Windows Server Evaluation Software

Students can use Windows Server 2022 or Windows Server 2025 for the lab. Windows Server 2022 remains widely deployed, while Windows Server 2025 represents the current direction of the platform. If the goal is to practice the newest features, use Windows Server 2025. If the goal is to match an existing enterprise environment, Windows Server 2022 may be more realistic.

Evaluation media is commonly used for training labs. A student lab should never use production license keys, production domain controllers, or production backup repositories. Keep the training environment isolated so that mistakes do not affect real systems.

Windows Admin Center

Windows Admin Center is useful for browser-based management of Windows Server. It can help students inspect server configuration, manage roles and features, review storage, and perform administrative tasks without relying only on older graphical tools. It also helps connect traditional server administration with newer hybrid management models.

PowerShell

PowerShell is essential for Windows Server disaster recovery. Many recovery operations can be performed through graphical tools, but administrators should also understand command-line recovery, scripting, automation, and repeatable procedures. PowerShell is especially valuable when documenting a runbook because commands can be copied, reviewed, tested, and improved over time.

Windows Server Backup and Recovery Tools

Windows Server Backup is useful for learning the difference between file backup, volume backup, System State backup, and Bare Metal Recovery. A System State backup protects critical operating system and server role components. Bare Metal Recovery is used when a machine cannot boot or when the system disk must be replaced or rebuilt.

Students should practice recovery, not just backup creation. A backup job that completes successfully is only the first half of the process. The real test is whether the backup can be restored, whether the restored server boots, whether the service works, and whether users can reconnect.

Azure Subscription for Hybrid Recovery Exercises

Some disaster recovery designs extend beyond the local server room. Azure Backup, Azure Site Recovery, Azure Arc, and other hybrid services can be used to protect or manage systems across environments. A free or low-cost Azure subscription may be enough for evaluation exercises, but students should pay close attention to service costs, storage consumption, region selection, and cleanup after testing.

Azure is optional for the early course lessons. However, it is useful to understand because modern disaster recovery often combines local backups, replicated virtual machines, cloud storage, cloud monitoring, identity services, and documented recovery plans.

Production Sizing Guidance

The course lab minimums should not be confused with production disaster recovery requirements. A lab environment teaches concepts. A production environment protects business operations. Production DR requires workload inventory, dependency mapping, risk analysis, recovery priorities, testing, security controls, monitoring, and funding.

Why Lab Minimums Differ from Production Requirements

A student lab may run on a laptop with enough memory and storage for a few virtual machines. A production recovery environment may need multi-core CPUs, 16 GB or more RAM per server, SSD or NVMe storage, redundant power supplies, redundant NICs, RAID or resilient storage, 10 Gbps or faster networking, separate backup repositories, and off-site or cloud-based recovery options.

Production systems must also be sized for failover load. A recovery server that looks adequate when idle may fail under real application demand. If ten virtual machines fail over to a recovery host, that host must have enough CPU, memory, storage throughput, and network capacity to run them at the level required by the business.

RTO and RPO Targets

Recovery Time Objective, or RTO, defines how long a system can be unavailable before the outage becomes unacceptable. Recovery Point Objective, or RPO, defines how much data loss is acceptable, measured in time. These two values drive many design decisions. A system with a four-hour RTO and a twenty-four hour RPO may be protected with ordinary scheduled backups. A system with a fifteen-minute RTO and a near-zero RPO may require replication, clustering, automation, and frequent recovery testing.

Hardware and software requirements should always be connected to RTO and RPO targets. Without those targets, disaster recovery planning becomes guesswork. The organization may overbuild an expensive recovery platform for a low-priority workload, or underbuild recovery for a system that the business cannot tolerate losing.

Course Readiness Checklist

Before continuing, confirm that you have the basic resources needed to follow the course. You do not need enterprise hardware for every lesson, but you should have a controlled environment where you can install Windows Server, create test data, perform backups, and practice recovery without risk to production systems.

• You have access to Windows Server 2022 or Windows Server 2025 installation media.
• You can create at least one Windows Server virtual machine.
• You have enough disk space for backups, test restores, and recovery media.
• You understand that a two-server lab is recommended for replication and failover exercises.
• You can use Hyper-V or another virtualization platform for isolated practice.
• You have administrator access inside the lab environment.
• You can use PowerShell for basic administrative commands.
• You understand that production disaster recovery requires sizing, testing, documentation, and business approval.

The most important requirement is the habit of testing. Disaster recovery is not proven by owning backup software, configuring replication, or writing a plan. It is proven when a failed system can be restored and validated. As you move through the course, treat every backup, replica, image, and recovery procedure as something that must be tested before it can be trusted.

The next lesson moves from course requirements into the planning process. After you know what tools and lab resources are needed, you can begin studying how organizations identify risks, rank systems by importance, define recovery objectives, and choose the correct recovery method for each workload.