What are the benefits of running DRBD in Diskless mode?

dribd in diskless mode simple diagram explained

  Introduction As the developers of DRBD®, LINBIT has led the way in high availability since 2001. DRBD has been included in the Linux kernel since version 2.6.33 (2009), has been deployed on all major Linux distributions, and is fully compatible with systems, applications, devices, and services. LINBIT specializes in block level replication, high availability, […]