How To Create LVM Using vgcreate, lvcreate, and lvextend lvm2 Commands by Rajesh Maurya LVM stands for Logical Volume Manager. With LVM, we can create logical partitions that can span across one or more physical hard drives. First, the hard drives are divided into physical volumes, then those physical volumes are combined together to create the volume group and finally the logical volumes are created from volume group. The LVM commands listed in this article are used under Ubuntu Distribution. But, it is the same for other Linux distributions. Before we start, install the lvm2 package as shown below. $ sudo apt-get intall lvm2 To create a LVM, we need to run through the following steps. Select the physical storage devices for LVM Create the Volume Group from Physical Volumes Create Logical Volumes from Volume Group Select the Physical Storage Devices for LVM – Use pvcreate, pvscan, pvdisplay Commands In this step, we need to choose the ph...
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How To Set Up an NFS Mount on CentOS 6 About NFS (Network File System) Mounts NFS mounts work to share a directory between several servers. This has the advantage of saving disk space, as the home directory is only kept on one server, and others can connect to it over the network. When setting up mounts, NFS is most effective for permanent fixtures that should always be accessible. Setup An NFS mount is set up between at least two servers. The machine hosting the shared network is called the server, while the ones that connect to it are called ‘clients’. This tutorial requires 2 servers: one acting as the server and one as the client. We will set up the server machine first, followed by the client. The following IP addresses will refer to each one: Master: 12.34.56.789 Client: 12.33.44.555 The system should be set up as root. You can access the root user by typing sudo su Setting Up the NFS Server Step One—Download the R...
Perform Live Migrations VMware vSphere live migration allows you to move an entire running virtual machine from one physical server to another, without downtime. The virtual machine retains its network identity and connections, ensuring a seamless migration process. Transfer the virtual machine's active memory and precise execution state over a high-speed network, allowing the virtual machine to switch from running on the source vSphere host to the destination vSphere host. This entire process takes less than two seconds on a gigabit Ethernet network. Automatically optimize virtual machines within resource pools. Perform hardware maintenance without scheduling downtime or disrupting business operations. Move virtual machines away from failing or underperforming servers. Automate and Schedule Migrations Using VMware vSphere vMotion automated migration capability, you can schedule migrations at pre-defined times, without adm...
RAID stands for Redundant Array of Inexpensive (Independent) Disks. On most situations you will be using one of the following four levels of RAIDs. RAID 0 RAID 1 RAID 5 RAID 10 (also known as RAID 1+0) This article explains the main difference between these raid levels along with an easy to understand diagram. In all the diagrams mentioned below: A, B, C, D, E and F – represents blocks p1, p2, and p3 – represents parity RAID LEVEL 0 Following are the key points to remember for RAID level 0. Minimum 2 disks. Excellent performance ( as blocks are striped ). No redundancy ( no mirror, no parity ). Don’t use this for any critical system. RAID LEVEL 1 Following are the key points to remember for RAID level 1. Minimum 2 disks. Good performance ( no striping. no parity ). Excellent redundancy ( as blocks are mirrored ). RAID LEVEL 5 Following are the key points to remember for RAID level 5. Minimum 3 disks. Good performance ( as blocks are striped ). ...
Install Exchange 2010 Using the Custom Installation Type Exchange 2010 12 out of 19 rated this helpful - Rate this topic Applies to: Exchange Server 2010 SP3, Exchange Server 2010 SP2 Topic Last Modified: 2011-10-31 You can install Microsoft Exchange Server 2010 using the Custom installation type. A custom installation enables you to select which specific server role or roles you want installed. Custom installation differs from the Exchange 2010 Typical installation type in which the Hub Transport, Client Access, and Mailbox server roles plus the Exchange management tools are installed by default. For detailed steps about how to perform an installation of Exchange 2010 with the Typical installation type, see Install Exchange Server 2010 . After you've completed a custom installation of Exchange 2010, be aware of the following important points: Potential for simultaneous OAB download request...
How To Install Kali Linux :- Kali Linux Installation Requirements Installing Kali Linux on your computer is an easy process. First, you’ll need compatible computer hardware. Kali is supported on i386, amd64, and ARM (both armel and armhf) platforms. The hardware requirements are minimal as listed below, although better hardware will naturally provide better performance. The i386 images have a default PAE kernel, so you can run them on systems with over 4GB of RAM. Download Kali Linux and either burn the ISO to DVD, or prepare a USB stick with Kali Linux Live as the installation medium. If you do not have a DVD drive or USB port on your computer, check out the Kali Linux Network Install . Installation Prerequisites A minimum of 10 GB disk space for the Kali Linux install. For i386 and amd64 architectures, a minimum of 512MB RAM. CD-DVD Drive / USB boot support Preparing for the Installation Download Kali linux . Burn The ...