1) Server hardware part
2) Method of storing data server
3) server hardware works
4) the server hardware performance comparison
02. Knowledge curriculum review section
03. server hardware detailed description
1) CPU effect: arithmetic control
Watch Information:
Large ones --- server CPU number of pieces (a one-way, two-way, four-way four)
Audit --- server task parallel processing capabilities (software up and running generating process information)
2) Disk function: storing data information (permanent)
Watch Information:
Capacity ---- decision data memory space (minimum storage unit of Byte data (bytes))
----------- unit conversion:
System conversion method: 1KB = 1024Byte 1MB = 1024KB 1GB = 1024MB 1TB = 1024GB 1PB = 1024TB
Manufacturer conversion method: 1KB = 1000Byte. . . . .
1TB HD: How much hard drive capacity?
1TBx1000x1000x1000x1000/1024/1024/1024
Interface ----- determines the data reading efficiency (SATA (home) ,, scsi ,, sas (server) ,,)
Kind ----- decided to read data efficiency of the purchase price
SSDs mechanical hard drive
Speed ---- data storage efficiency
Home environment: 5.4k 7.2k rpm
Enterprise environment: 10k 15k
3) Memory function: storing data information (temporarily) relieve pressure disk
Watch Information:
Program - - code information written by developers
Process ---- or software program up and running process will produce
Daemon ---- has been running process
Buffer ----- stored into memory (memory buffer - write data process), do not put user data stored on disk process ---> Memory (buffer) -> Save to disk
Cache ----- stored in memory (buffer area during data read ---), stored in the user data disk read -----> memory (cache) <---- data disks (hot data)
4) Power effect: power to the server hardware
Watch Information:
------ redundancy backup capability to deploy a plurality of power modules ,,, uninterruptible power supply UPS ,,,, ,,, generator
5) Array card effect: integrating into a plurality of logical hard disk on https://blog.csdn.net/xcbeyond/article/details/41911571
a. single hard drive capacity upgrade
b. to enhance data storage efficiency
c. enhance data security
DELL server configuration RAID https://wenku.baidu.com/view/0101ba966bec0975f465e243.html?sxts=1574652174145
6) Remote Management Card function: remote host open / batch remote mounting system
04. A method of storing data server
High concurrency storage / read data (portal)
Storing data: CPU receiving and processing data ---> stored in memory ---> permanently saved to disk to ease storage pressure
Reads Data: CPU data reception processing ---> memory read ---> data disk hot (frequently used data) to enhance the efficiency of reading
Low concurrent memory / read data (SMEs) when the user is accessing, reading and writing fewer cases
Storing data: CPU receiving and processing data ---> permanently saved to disk
Reads Data: CPU data reception processing ----> memory read <---- hotspot data disk read ,, improve efficiency
05. Servers Work Description
User Action ---> input device (keyboard, mouse, tablet) ---> the CPU (hard hardware memory management control) ---> output device (monitor)
Memory: Transition Equipment
06. ordering server hardware
Performance Sort: CPU ---> Memory ---> card ----> disk (solid state) ---> Disk (Machinery)
07. What is the operating system
Management of computer hardware and software resources of a computer program, exchange intermediary between people and hardware.
1. Operating system components: the software program interpreter core
2.linux operating system features:
Security stability (not easily poisoned) properties open (code) free propagation
Multitasking characteristic multiple users to log managing multiple CPU management
Preview know:
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What virtualization software? VMware Workstation 12/15 * - Windows VMware Fusion - Apple OS
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Package linux system - a system image Download good download site: https://opsx.alibaba.com/mirror
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linux installation process