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Sun DR
Sun Remote Dynamic Reconfiguration (sun-dr) allows administrators to dynamically modify the hardware configuration of certain Sun Microsystems servers without shutting them down. This management protocol aids in reallocating resources or replacing hardware to ensure optimal uptime and minimal service disruption..
Sun Remote Dynamic Reconfiguration (sun-dr) is a proprietary protocol developed by Sun Microsystems designed to facilitate the live reconfiguration of system hardware components, primarily on SPARC-based servers. It plays a crucial role in enterprise environments where minimal downtime is critical by allowing CPUs, memory boards, and I/O components to be added or removed dynamically.
This protocol functions by establishing a dedicated management channel between a management console and the system controller. Through this communication, system administrators can command components to be logically disconnected and powered off before their physical removal, or powered on and logically integrated after insertion.
Port 665 enables the network-based interfaces for this communication. Since this is an older, largely proprietary service, availability today may be limited mostly to legacy hardware still maintained by some enterprise users. It is strongly associated with specialized Sun management utilities.