Arcserve UDP | A backup Solution We have many options available in market for daily Backups and recovery option , one of the option is ArcServe UDP (unified data protection) Solution. It is an advance solution which almost provides neck to neck solutions of today’s infrastructure, whether it is virtual environment or Physical, Cloud or… Read More »
Vmware interview questions Here are the VMWare technical Interview questions that help to clear your Interview rounds: 1. How to add datastore on ESX and how it will be visible to all ESX servers 2. How to add a virtual network 3. How to make teaming in VC 4. What is HA, DRS,… Read More »
VMWare comparison of vsphere 4, 4.1 & 5. Maximum Configuration comparison of ESX hosts to compare virtualization.
Virtual Network Adaptor Types The following network adapters might be available to the VM depending on the virtual hardware version and guest operating system. Vlance — An emulated version of the AMD 79C970 PCnet32 LANCE NIC, an older 10 Mbps NIC with drivers available in most 32-bit guest operating systems except Windows Vista and… Read More »
What is Vmware Tools? With the VMware Tools SVGA driver installed, Workstation supports significantly faster graphics performance. The VMware Tools package provides support required for shared folders and for drag and drop operations. Other tools in the package support synchronization of time in the guest operating system with time on the host, automatic grabbing and… Read More »
Default Partitions in ESX ? When you install ESX 4 you should choose Advanced for the installation type so you can delete the default partitioning shown in the following screen shot: Default Partition while Installation of ESX 4.1 After deleting / changing the default you can then… Read More »
What is VMware DRS? VMware Distributed Resource Schedule (DRS) VMware DRS dynamically balances computing capacity across a collection of hardware resources aggregated into logical resource pools, continuously monitoring utilization across resource pools and intelligently allocating available resources among the virtual machines based on pre-defined rules that reflect business needs and changing priorities. When a virtual machine experiences an increased load, VMware… Read More »
What is HA? http://www.vmware.com/pdf/ha_datasheet.pdf How Does VMware HA Work? VMware HA continuously monitors all servers in a resource pool and detects server failures. An agent placed on each server maintains a “heartbeat” with the other servers in the resource pool and a loss of “heartbeat” initiates the restart process of all affected virtual machines… Read More »
How to add datastore on ESX and how it will be visible to all ESX servers? Launch vSphere Client -> Click on the top node in the left tree -> Configuration tab -> Click on the storage menu item under “Hardware” section, as shown below. This storage section, will display all available VMware datastores as shown… Read More »
How to enable the root login in the ESX server which is OFF by default? Edit the configuration file for SSH with the command: nano /etc/ssh/sshd_config Find the line that starts with PermitRootLogin and change the no to yes. You can find this line about 2 pages down from the top. Save the file by… Read More »
What Snapshot files are created of Virtual Machine? When a snapshot is created a number of files are created in the directory for that virtual machine. <machine name>-SnapshotX.vmsn (Where X is the number of the snapshot taken) This file stores the state of the virtual machine when the snapshot was taken. <machine name>-SnapshotX.vmem (Where X… Read More »
What is memory Ballooning?? Ideally, a VM from which memory has been reclaimed should perform as if it had been configured with less memory. ESX Server uses a ballooning technique to achieve such predictable performance by coaxing the guest OS into cooperating with it when possible. A small balloon module is loaded into the guest OS as a… Read More »
What is vmotion and how it works? The brief explanation of V Motion functionality Live migration of a virtual machine from one physical server to another with VMware VMotion is enabled by three Underlying technologies. First, the entire state of a virtual machine is encapsulated by a set of files stored on shared storage such as Fibre Channel or iSCSI Storage Area… Read More »
Convert Virtual Disk from Thin to Thick Here is the way to Convert Virtual Disk from Thin to Thick If you created a virtual disk in the thin format, you can convert it to thick. The thin provisioned disk starts small and at first, uses just as much storage space as it needs for its initial… Read More »