Server consumables refer to the resources and components that are utilized or consumed by a web server during its operation. These consumables are necessary to ensure the proper functioning and performance of the web server. Here are some common web server consumables:

1. CPU (Central Processing Unit): The CPU is responsible for executing instructions and performing calculations. A web server consumes CPU resources when processing requests, executing scripts, and handling server-side operations. CPU capacity is important for handling concurrent requests and ensuring responsive performance.
2. Memory (RAM): Memory is used by a web server to store and access data during its operation. The server consumes memory to load and execute programs, store temporary data, cache frequently accessed content, and handle simultaneous connections. Sufficient memory capacity is essential for efficient and responsive server performance.
3. Disk Storage: Web servers require disk storage for storing website files, databases, logs, and other data. The server consumes disk space when writing and reading files, storing user data, and managing website content. Adequate disk storage capacity is necessary to accommodate the data requirements of the server and the hosted websites.
4. Network Bandwidth: Network bandwidth refers to the capacity of the network connection available to the web server. It represents the amount of data that can be transmitted over the network within a given time frame. Web servers consume network bandwidth when serving web pages, transferring files, handling incoming and outgoing data traffic, and serving media content. Sufficient network bandwidth is important for handling high volumes of concurrent user requests and ensuring smooth data transmission.
5. Power and Electricity: Web servers consume electrical power to operate. They require a stable power supply to keep the server running continuously. Power consumption is an important consideration, especially in data centers or environments where energy efficiency is a concern.
6. Cooling and Heat Dissipation: Web servers generate heat during operation, especially when under heavy load. Cooling systems, such as fans or liquid cooling, are necessary to dissipate the heat and maintain optimal operating temperatures. Cooling infrastructure and ventilation are required to prevent overheating and ensure server reliability.
7. Software and Applications: Web servers consume various software components and applications that facilitate their operation. This includes the web server software itself (e.g., Apache, Nginx), operating system, databases (e.g., MySQL, PostgreSQL), scripting languages (e.g., PHP, Python), and other server-side technologies. These software components require resources and may have specific configuration and resource utilization needs.

Proper management and provisioning of these consumables are essential for maintaining the performance, reliability, and scalability of web servers. Monitoring and optimizing resource consumption can help ensure that the web server operates efficiently and meets the demands of the hosted websites and applications.