Disk Cache Settings

For applications with heavy I/O, like Primavera, go with the writeback setting.

• none: By skipping the host cache, this option strikes the best balance between native-level performance and data security, so it’s the go-to for production and live migration.
• writeback: This uses the host’s RAM as a buffer to deliver top performance, but there’s a real risk of major data loss if the host goes down before syncing to disk.
• writethrough: It guarantees data integrity by only confirming a write once it’s safely on physical storage, though write speeds are painfully slow.

After changing this setting, you’ll need to reboot.