Compact racks (6U–24U) can be deployed at branch locations for local data processing and low-latency applications. Small businesses use rack servers to host file sharing, backups, VoIP, and internal ERP systems. A data center server rack is the physical foundation of modern IT infrastructure, enabling the organized installation of servers, switches, PDUs, UPS systems, and structured cabling. There are three primary rack types - open-frame racks, enclosed cabinets, and wall-mount racks, each suited for. IT server racks are generally used in data centers, offices and home setup for housing computing and networking equipment.