Server fundamentals

1. Server Overview

1) Server is a kind of computer, which is a high-performance computer that provides various services for client computers in the network.

2) under the control of the network operating system, the server provides the connected hard disk, tape, printer and expensive special communication equipment to the customer sites on the network to share. It can also provide centralized computing, information release and database management services for network users.

3) the server name is Server in English.

4) Why use a server?

5) six characteristics of the server

6) Server classification

7) diagrams of key components of the server

two。 Cabinet and computer room

3. Server hard disk

1) hard disk type

2) appearance of server hard disk

4.RAID display

1) Raid:Redundant Array of Independent Disk, redundant display of independent disks.

2) RAID regards multiple disks in the same display as a single virtual disk, and the data is stored in the disk display in a segmented manner.

3) 2 major technical features of RAID display:

5. Hot swappable technology

1) Hot swappable (hot-plugging or Hot Swap) function allows users to remove and replace damaged hard drives, power supplies or boards without shutting down the system or cutting off the power supply, thus improving the timely recovery, scalability and flexibility of the system to disasters.

2) Common hot-swappable devices: hard drives, power supplies, PCI devices, fans, etc.

3) Hot swappable components: