Disk Cache Configuration

For I/O-heavy applications like Primavera, the writeback setting is the one to pick.

• none: Skips the host cache entirely, delivering a sweet spot of native speed and data protection—hence its status as the default for production and live migration.
• writeback: Uses the host’s RAM as a buffer to push performance to the limit, but a host crash before syncing can wipe out critical data.
• writethrough: Puts data safety first by only confirming writes after they land on physical storage, though this comes at the cost of painfully slow write operations.

You’ll need to restart the system after changing this setting.