what is disk defragmentation

The SQL Server database has three file types, data files, secondary data files, and log files, where the log files contain all the log information used to recover the database, SQL Server always writes the log file LDF first, and data changes are written to MDF, which can lag So the speed of log writes determines the amount of write transactions that SQL Server can host in a certain program, so what is the

Linux system/proc directory is stored in the current system running state information, as a file to save, such as CPU information file Cpuinfo, memory information file meminfo, disk information file diskstats.The meanings of each column in Diskstats are as follows:1 0 SDA 505235 28461 7421219 6259625 2397331 3804539 49818500 25885599 0 6122393 32152888Device number device read completed number of times read

The file in the U disk will be hidden for no reason, what is the reason? The simple answer is: your u disk was poisoned. Don't worry, the following teach you how to do to open a U disk file. First click on the "Start" menu and t

administrator can set a specific custom folder and grant permissions to employees. When an employee has the permission, the administrator can access, upload, and download files in the Network Disk folder. This gives employees a certain degree of autonomy. 3. Recycle Bin: All files deleted from the online storage are stored here. Only the Administrator has the permission to access the files, and the administrator can restore the deleted files here.

The first place is Syslinux, and the others are not. Grub4dos, DOS, WIN2K/XP, win7 compatibility and the above question, their performance depends on what kind of motherboard and U disk chip you use, they are only in some motherboards and U disk chip on the work is very good

What should I do if I find that the hard disk space is insufficient today. 1) First, this partition is LVM, so check whether the previous user has left space for it. Enter LVM to enter the LVM prompt 2) Input pvscan. It's a day, and our predecessors have reserved 1.78tb. Is

shielding, but she groped, and then went to see the local downloaded cartoons, so I put the TV in the MI Smart socket, timed to the TV power off, the results were she found power, then to restart the socket on it (press the white button, her exact words). So add a script, timed to download the animated directory of the Execute permission to remove, so that the millet box can not be read. Update log: 2015-08-17 First Update 2016-06-14 added a little bit of Raspberry Pi 3 conten

The Iotop command is a top class tool used to monitor disk I/O usage. Iotop has a UI similar to top, which includes information about PID, user, I/O, process, and so on. Most of the IO statistics tools under Linux, such as Iostat,nmon, can only be counted to the read and write of Per device, and if you want to know how each process is using IO, it

The newly purchased Kingsoft server appears error:database disk image is malformed when Yum Zabbix.This means that Yum's original data has been compromised, and to fix this problem, the following actions are required1)#yum clean Dbcache2) if not, then #yum clean metadata650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/88/43/wKioL1fs9CTQP8lOAAGl8afPZss041.png "title=" Untitled. png "alt=" Wkiol1fs

Q: My Computer C disk has three files volume is too large, add up to have more than 10 g! is not known what the problem, please advise. These three files are: C:windowswinsxs, there are 9GB of giant. C:FACEPROV.LOG,2GB. C:pagefile.sys, 2.4GB. A: First, talk about WinSxS. According to Microsoft officials, this folder

Two days ago, after the downloaded ghost was restartedThe four hard disk partitions are changed to one (only one C disk is left, and the capacity is the capacity of the entire hard disk. The correct steps for manual ghost installation due to an error in the manual ghost ste

navigate to the "Specify different days of the week to run scheduled scans" in the computer Configuration-Administrative Templates-windows build-windows defender-Scan "Configure to enable" to select settings based on content in Help. or close it directly in the Windows Defender Settings Internal management option. 5.Windows Search For old computers, Windows search uses a lot of system resources to turn it off. But the downside is the ina

C Disk full of how to do? resulting in less computer C disk space, mainly because the hard disk itself is too small or installed system, to C disk allocation capacity is too small cause. and C

Recently a friend went to the computer city to buy a 16G u disk, the computer with the Golden Hill poison PA's U disk authentication test results show that the actual capacity of only 4 G, and suggested that it is shrinking u disk. Friends immediately went to buy a U disk wh

, but the process of degaussing is certainly not about burning it red, but in a more advanced way, specifically what is not said. The CD-ROM is a laser on the CD-ROM aluminum film burning a "pit" to record information, of course, there are more advanced methods, but broadly similar.and read the information floppy

Today, I met a figure from Google listing the time loss of common operations. For details, see the big picture in high definition: This figure reminds me of the words Jim Gray has been circulating for a long time when I used redis :"Tape is dead, disk is tape, Flash is disk