Home > Workload Solutions > Oracle > White Papers > Oracle Database 19c Best Practices on Dell PowerEdge Servers and PowerStore T Model Arrays > Red Hat Enterprise Linux: Disk I/O Scheduler
In this best practice, we changed the default Linux disk I/O scheduler per Red Hat guidelines.
Overview
There are several choices for the type of disk scheduler used by the operating system for Red Hat Enterprise Linux 8. The function of the disk scheduler is for ordering, delaying, or merging I/O requests to storage to achieve better throughput and latency. Each disk scheduler provides a different method for managing storage requests:
In this best practice, we followed Red Hat Enterprise Linux recommendation of using the “none” disk I/O scheduler as the PowerStore contains NVMe drives and the database access the storage volumes as virtual devices through virtual guest OS and through host bus adapters (HBAs).
Additional resources
Red Hat Enterprise Linux 8: Monitoring and managing system status and performance