Veeam's Instant Recovery feature is a critical function for organizations managing virtual machines with large RAM allocations. So it’s crucial to configure Instant Recovery of VM with large RAM.
Instant recovery of VM with large RAM + reservation fails with “insufficient disk space”
It seems VBR checks for the availability of vPower NFS cache space equalling a full swap file for the recovered VMs full RAM allocation. This is even done with a memory reservation at 100% of the RAM which would not produce the swap at all. I’ve just realized IR jobs of 1.5 TB RAM HANA VMs fail for that reasons as we don’t have the vPower NFS cache at > 1.5TB. Is that by design? Veeam could check for RAM reservation in advance.
- Question from Veeam R&D Forums
Virtual machines with large RAM allocations are critical for running memory-intensive applications, such as databases. Instant recovery of such virtual machines minimizes downtime and ensures business continuity. At the same time, Veeam can be configured to check and schedule RAM reservations during instant VM recovery, which relies on a hypervisor such as VMware vSphere or Microsoft Hyper-V to determine resource availability and dynamically manage RAM allocation.
The following are some ways Veeam handles RAM in the instant recovery process.
1. Hypervisor Memory Management
When starting Instant Recovery, Veeam mounts the VM directly from the backup file. The VM's memory requirements are passed to the hypervisor, which checks for enough memory on the selected recovery host and handles memory allocation.
2. Resource Validation in the Recovery Wizard
During the instant recovery setup, Veeam allows the user to select the target host. Along with the selection, it analyzes the host’s available resources, helping to ensure that the virtual machine can boot successfully.
3. Dynamic Resource Usage
Veeam does not pre-allocate or reserve memory in advance. However, it will consider the resource limitations of the selected recovery host to avoid overloading.
You can follow the below steps to configure instant recovery of VM with large RAM:
Step 1. Open the Veeam Backup & Replication navigate to the backup of the desired VM, right-click on the VM, and select Instant VM Recovery.
Step 2. Choose a hypervisor host with adequate resources to temporarily run the VM.
Step 3. Configure recovery options, such as resource prioritization and network settings.
Step 4. Once the VM is powered on, validate its functionality to ensure it operates as expected.
Step 5. Use Quick Migration or the hypervisor’s native migration tools to transfer the VM from the temporary datastore to production storage.
AOMEI Cyber Backup is a powerful and simple tool designed to help you keep your data safe and provide instant recovery. It enables users to efficiently recover workloads directly from backup repositories, minimizing Recovery Time Objectives (RTOs) and ensuring a seamless transition to operational status.
✨Automated Backup Scheduling: It allows you to set up VMware backup schedules to ensure VMs are protected without manual intervention. 🎈Agentless Backup for VMs: It can create full, standalone image-level virtual machine backups of VMware ESXi virtual machines. 🎯Centralized Management: It manages all your VMware ESXi backups from a single intuitive dashboard. 🔰Instant VM Recovery: It can provide you instant recovery solution to minimize downtime, enabling a smooth recovery directly to your VMware environment.
Step 1. In the AOMEI Cyber Backup web client, navigate to Backup Task to create a VMware backup for your VMs. In this process, you can schedule an automated backup for a VM recovery plan.
Step 2. Navigate to Task > Instant Recovery > + New Instant Recovery > Restore from task to configure the instant recovery.
Step 3. Click Select to choose the virtual machine and backup version.
Step 4. Choose the target device in Restore to.
Step 5. Then, set the hardware settings for the new virtual machine, such as the CPU quantity, CPU Cores, and memory size.
Step 6. Click Start Restore to start the instant restore.
Step 7. After creating VM instant recovery, you can click Start Migration to migrate the virtual machine back to the production environment.
In Veeam Backup & Replication, the instant recovery of large RAM virtual machines proves the platform's robustness and adaptability. By following best practices and leveraging high-performance storage, organizations can ensure minimal downtime and optimal performance during recovery.