Found 387 Articles for Hardware

A SAN is a network of storage devices that can be accessed by multiple servers or computers. It provides a shared pool of storage space. Each computer on the network can access the storage on the SAN as though they were local disks connected directly to the computer. SAN uses SCSI and SATA protocols.NAS are storage devices that are linked to a network and provide file access services to computer systems. These devices generally include an engine that executes the file services and one or more devices on which data is stored. NAS uses file access protocols such as NFS ... Read More

Preemptive Scheduling is a CPU scheduling technique that works by dividing time slots of CPU to a given process. The time slot given might be able to complete the whole process or might not be able to it. When the burst time of the process is greater than CPU cycle, it is placed back into the ready queue and will execute in the next chance. This scheduling is used when the process switch to ready state.Algorithms that are backed by preemptive Scheduling are round-robin (RR), priority, SRTF (shortest remaining time first).Non-preemptive Scheduling is a CPU scheduling technique the process takes ... Read More

This article helps us to add a new disk to LVM ( Logical Volume Manager), the very best advantage of LVM over normal disk partitions is its support for “dynamic partitions”; you can create and resize (expand or shrink) LVM volumes dynamically as we needed. There is no limit of the physical disk boundary in LVM logical volumes, so you can create a large LVM volume that spans across multiple smaller physical disks. This flexibility partitioning allows you to manage storage space more efficiently as disk usage change from time to time.If you want to add new disks to an ... Read More

In this article, we will learn how to add a new hard disk drive to Linux OS, Assuming the drive is visible to the BIOS, it should automatically be detected by the operating system. Typically, the disk drives in a system is assigned to a device name beginning with ‘hd’ or ‘sd’ followed by a letter to indicate the device number. For example, the first device might be /dev/sda, the second /dev/sdb and so on.The following is the output from a system with only one physical disk drive.# ls /dev/sd* /dev/sda /dev/sda1 /dev/sda2 /dev/sdbThis shows that the disk drive represented ... Read More

Apt-get is the command-line utility for dealing with applications and may be considered for the person’s “back-end” to other tools for making use of the APT library.Apt-cache performs a variety of operations on APT’s package.This article explains about -“Basic Commands of APT-GET and APT-CACHE for Package Management”.Apt-getTo get the more options about apt-get, use the following command as shown below –$ apt-get -hThe sample output contains the following options as shown below –update - Retrieve new lists of packages    upgrade - Perform an upgrade    install - Install new packages (pkg is libc6 not libc6.deb)    remove - Remove ... Read More

In this article, we will learn how to enable or add the swap partition on Ubuntu 16.04, actually, the swap will increase the chance of responsiveness of the servers by guarding the out of memory errors for the applications, by default Ubuntu will not enable the swap space. We will learn how to add or enable the swap file for Ubuntu 16.04 servers.Swap is the location or the file which can handle the temporary data which is not required immediately by RAM but will be used to increase the amount of information that the server can handle for its working ... Read More

In this article, we will know how to count the number of threads in a process on Linux environment, there are several ways to do it, but we will learn using ‘/proc’ and ‘ps’ command.Using ‘/proc’In Proc pseudo file system, this resides in /proc directory, and this is the easiest way to see the thread count of the task or active process. The ‘proc’ directory exports the form of readable text files to give the information related to the existing processes and the system hardware such as Interrupts, CPU, memory, disk, etc.# cat /proc//statusThe above command is the general syntax ... Read More

A smartphone is not just a phone, it can be a phone, a music player, a video player, a radio, an electronic musical instrument, a GPS, a gaming console, a heart rate monitor, a personal trainer, a digital camera, a document scanner, a messenger, a word processor, a personal pocket computer and the list of infinite possibilities goes on and on beyond your expectation, even beyond your imagination.Not only a gadget, a smartphone can be a status symbol for a huge number of people. A smartphone reflects and complements the personality of its owner. There is only one answer to ... Read More

Shutdown7 is a compact application with feature-rich user interface that gives advancement to the window shutdown system – all in free. These shutdown7function get activated after specific condition in the system – on closing of an application, file deletion, music playback, or after a specific period of user activity.It is a very small and useful application to help the user to turn on or turn off the computer at a specific time. Only, user has to specify the exact date and time upon which computer get turned off and turned on. For example; when user runs some process and leave ... Read More

If anybody PC gets slow down, they should not blame to the PC hardware. It’s true, they can speed up their PC by adding RAM, up-grading CPU, or exchanging hard drive with an SSD. All of these solutions tell to spend money.Users do not have to reinstall the operating system to speed-up their PC, they just have to apply some tricks on the PC to fixes the system problem.This article will definitely help those users who do not want to spend money on purchasing any tool (Software or hardware) at the time of system get slow down because of heavy ... Read More