first day
A . Self-introduction and learning methods, as well as the three principles of operation and maintenance personnel
1. To ensure that data is not lost
2. Server 7 * 24-hour operation
3. To enhance the user experience access
Two server type and size
Blade servers cost-effective large space occupied
Tower server Small server (for home use)
Server Category: Size Category
1U server 2U server 4U server
Ps. U indicates that the server height 1U = 4.45cm
The next day:
computer hardware and servers and server raid card role
Raid0 advantages: speed disadvantages: data security is not high
Raid1 advantages: backup data (high security performance) disadvantages: slow data transmission
Raid5 high storage efficiency high safety (but only a bad disk): Advantages Disadvantages: a waste
hard disk
Day:
server remote management card, server hard disk interface, data conversion unit
how to read data stored small and medium-large enterprise operating system components
Remote Management Card: a control server in a server shutdown state
Server hard disk interface : IDE SATA --- --- --- scsi SAS (server hard drive mainstream Interface) --- PCI-E (server solid-state hard disk interface)
Day:
Linux system version and install a virtual machine selection
CentOS-7-x86_64-DVD-1810.torrent - seed file system image faster to download
CentOS-7-x86_64-Everything-1810.iso - centos7.6 the full version of the image file
CentOS-7-x86_64-Everything-1810.torrent
CentOS-7-x86_64-LiveGNOME-1810.iso - centos7.6 demo shows the image file
CentOS-7-x86_64-LiveGNOME-1810.torrent
CentOS-7-x86_64-LiveKDE-1810.iso - centos7.6 demo shows the image file
CentOS-7-x86_64-LiveKDE-1810.torrent
CentOS-7-x86_64-Minimal-1810.iso - centos7.6 streamline teaching using image files University
CentOS-7-x86_64-Minimal-1810.torrent
CentOS-7-x86_64-NetInstall-1810.iso - centos7.6 network installation image file
FIG follows server logic thinking