Specifying I/O Settings
I/O settings in Veeam Backup & Replication refer to the input/output configuration options that allow users to control and optimize the data transfer and processing operations during backup and replication tasks. These settings are valuable because they provide flexibility and performance tuning for different backup and recovery scenarios. This fine-grained control ensures that backup and replication processes do not overload the storage infrastructure, which is particularly important in large-scale environments.
By optimizing I/O settings, Veeam users can balance data protection efficiency and resource utilization, ultimately leading to improved backup and recovery performance and reduced impact on production systems. This level of control is invaluable for meeting specific service level agreements (SLAs) and ensuring that backup and replication operations align with an organization's business needs.
Consider the Following
- The Enable storage latency control option is included in the Veeam Universal License. When using a legacy socket-based license, Enterprise or higher edition is required.
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The Set custom thresholds on individual datastores option is included in the Veeam Universal License. When using a legacy socket-based license, Enterprise Plus edition is required.
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The Enable storage latency control option is not supported for vVOLs/vSAN storage.
Enabling the storage latency control option in Veeam Backup & Replication introduces a 40-60 second time offset for processing VM disks residing on the same datastore. This mechanism allows Veeam to assess the current I/O load on the datastore before initiating disk processing.
For optimal job performance, it is essential to consider this behavior and avoid scheduling jobs that process multiple VM disks on the same datastore to start simultaneously, as this can lead to performance degradation.