Server hardware

1. CPU function: operation / control concern information: the number of paths-the number of CPU in the server (1 single-channel, two-way, four-way, four-way) core number-server parallel processing task ability (software runs to generate process information) 2. Disk function: storage data information (permanent) concern information: capacity-determine storage data capacity (minimum storage data unit Byte (bytes)) unit conversion: system conversion method: 1KB = 1024 bytes 1MB = 1024 KB 1GB = 1024 MB 1TB = 1024 GB 1PB = 1024 TB manufacturer conversion method: 1KB = 1000 bytes 1MB = 1000 KB 1GB = 1000 MB 1TB = 1000 GB 1PB = 1000 TB 1TB hard disk: what is the actual hard disk capacity? 1TB*1000*1000*1000*1000/1024/1024/1024 interface-determines data reading efficiency sata (household equipment)-scsi-- type of sas (server)-determines data reading efficiency Rate purchase price Mechanical hard disk 4T-600 Yuan + solid State disk 512G -? (600 +) Speed-Storage data efficiency Home Environment: 5.4k 7.2k Enterprise Environment: 10k 15k3) memory function: storing data information (temporary) relieving disk pressure concern information: program Preface-developer coding information process-running program software daemon-always running process buffer-stored in memory (buffer-write data) User stores data without putting it in disk-- > memory (buffer)-- > Save to disk [buffer online viewing is not saved to hard disk and temporarily stored in memory (buffer)] cache-stored in memory (cache area-read data) Store data on disk-- > memory (cache)