Disk Cache Settings

If you're running an I/O-intensive application like Primavera, you'll want to switch to writeback mode for optimal performance.

• none: By skipping the host cache, this mode strikes a fine balance between native-level speed and data protection, which is why it's the go-to option for production environments and live migrations.
• writeback: This mode uses the host's RAM as a buffer to deliver the fastest performance, but be aware—if the host crashes before changes are flushed to disk, you could face serious data loss.
• writethrough: For those who prioritize data integrity above all else, this setting confirms every write only after it's safely on physical storage, though it comes at the cost of notably slower write speeds.

A system reboot is necessary after you change this setting.