Disk Cache Settings

For an I/O-intensive application such as Primavera, set it to writeback.

• none: Strikes the best balance between native-level performance and data safety by bypassing the host cache, making it the standard choice for production and live migration.
• writeback: Delivers the highest performance by using the host’s RAM as a buffer, but carries a risk of significant data loss if the host crashes before syncing to disk.
• writethrough: Guarantees maximum data integrity by only confirming a write once it has reached physical storage, but this results in very slow write speeds.

A reboot is required after changing this setting.