Diskless - Ccu
Understanding CCU Diskless: Centralized Computing Without Local Storage
In the world of enterprise IT and industrial computing, reliability, security, and ease of management are paramount. One architecture that addresses all three is CCU Diskless—a configuration where a Central Computing Unit (CCU) operates without a local hard drive or SSD.
CCU Diskless vs. Traditional Thin Client
While often confused, a diskless CCU is not exactly a thin client: ccu diskless
Key Distinction: Thin Client vs. Diskless PC
- Thin Client: Low-power hardware that relies on the server for processing power (Remote Desktop).
- CCU Diskless (PC): Full-fat desktop hardware (Intel i5/i7, 16GB RAM) that uses the network only for booting. Once booted, the application runs locally on the client CPU/RAM. The server only serves the OS image and saves user profiles.
- Install
dnsmasq on the Ubuntu server.
- Configure
dhcp-range and enable PXE.
- Configure the
tftp-root directory to hold your kernel (vmlinuz) and initrd (initrd.img).
- Set the boot parameters to
root=/dev/nfs (or iSCSI target).
- Power on the CCU. Ensure it is set to "Network Boot" in BIOS.
- Watch it pull the OS into RAM.