Virtualization world

When using Provisioning Services with a Windows XP image, despite setting the vDisk to cache to local hard disk, it continues to cache to server. Background This issue could be because of the type of disk used on the image. To use a local disk cache on a virtual machine, it must have the storage attached, available, formatted as NTFS, and must be a basic disk. Resolution Ensure that the vDisk is in basic mode and formatted as NTFS. When the disk is in basic mode and formatted as NTFS, it can cache correctly.

1) Citrix Studio is used instead of Delivery Service Console --> in studio you use to configure enviorement and giving access of apps and desktops to users 2) No IMA datastore concept --> it's doesn't use datastore concept 3) There is no dedicated Zone Master 4) Terminal service is no longer needed 5) sites instead of Farms

Below are some of the differences between Two Versions 1) There is no IMA service which means there is no IMA datastore or Localhost cache 2) There is no support for oracle and access 3) There is no Activity directory configuration wizard or Farm OU 4) Terminal services is not required for XenDesktop 5 as it stores in database 5) Installation wizard is simple in XD5 6) XenDesktop supports only windows 2008, R2 , exit of windows 2003 7) There is no farm concept replaced by sites and group's 8) Idle pool settings is replaced by Desktop Group/Power Mangement

1) BOOMEBRANG from VMware 2) VMware Guest console from VMware 3) VEEAM Monitor 4) RVTOOLS 5) VMTURBO 6) POWERGUI

1.      The user device submits credentials to the Web Interface site. 2.      Web Interface passes the user credentials to the controller. 3.      Controller verifies user authorization by performing a Microsoft Active Directory query with the end user’s credentials. 4.      Controller queries the site database for the end user’s assigned desktop groups, named instance uses ports 1434 and 1433. 5.      Using the desktop group obtained from the database, controller queries the hypervisor about the status of desktops within that group. 6.      Controller identifies to Web Interface the desktop it assigned for this particular session. 7.      Web Interface sends an ICA file to the online plug-in, which points to the virtual desktop identified by the hypervisor. 8.      Online plug-in establishes an ICA connection to the specific virtual desktop that was allocated by the controller for this session. 9.      Virtual Desktop Agent verifies the license file with the con

VMware vSphere 5.1 has included data protection feature free of cost. Let us take glance of the product with some of the features 1) It's come as virtual appliance with 4 vCPU & 4 GB RAM 2) Only three options for configuration of usable storage is available i.e is half TB, 1 TB & 2 TB 3) If you assign space once you cannot change it, so be careful while planning 4) it can also restore indiviual files/folder/sub folders 5) it can configured for sending mails of the reports of the backups and restores 6) Backup jobs can be scheduled daily, weekly and monthly

Step 1: Find out current date and time and then set the date and time using following command date –s Step 2: Then check the current time at BIOS using following command hwclock  --show Step 3: And then synch the clock using following command hwclock  --systohc

The following is the procedure to add plugins to xencenter for instances RDP connection, services and event viewer Download file from the following location https://citrix.sharefile.com/d/s4ba9032305b4f6fb unpack to xencenter folder and start using the features, example screentshot

Monitoring XenServer to identify problems 1) Load Average --> # top 2) XAPI Task Queue  --> xe task-list 3) General Storage & network monitoring --> # iostat, hdparm, dd, tcpdump, netstat, ifconfig use top command to get real time information regarding load Best Practices 1) Increase Dom0 memory allocation -- refer to CTX126531 2) Optimize shared storage for PVS or IntelliCache -- refer CTX130632 • CTX131339 - XenServer performance: reality and myths • CTX128724 - Memco.sh - Memory Data Collection Script for XenServer Dom0 or Linux Systems • CTX128714 - Perfco.sh - Performance Data Collection Script for XenServer Dom0 • CTX126986 - Troubleshooting XenServer Deployments • CTX125180 - Troubleshooting XenDesktop, Provisioning Services & XenServer Integration • CTX125178 - XenServer Storage Management and Troubleshooting • CTX118397 - Introduction to Storage Technologies • CTX129669 - Overview of XenServer Distributed Virtual Switch/Control

Step 1: Enable Desktop experience feature in server manager of your XenApp server (or) run the following commands import-module ServerManager Add-WindowsFeature Desktop-Experience Step 2: start themes service and set it to automatic Step 3: Publish Desktop through XenApp

1. The __________ manages the network and storage I/O for all guest virtual machines. a. Hardware layer b. Control domain c. Xen hypervisor d. Windows virtual machine Answser: B 2. The _________ decouples the operating system and its applications from the underlying hardware. a. Xen hypervisor b. Control domain c. Linux virtual machine d. Windows virtual machine Answer: A 3. XenServer can be installed over the network using an XML-based answer file? a. True b. False Answer: True 4. Before installing XenServer, you should: (Choose two) a. Verify that the whole physical disk is at least 20 GB of space. b. Verify that the server meets the CPU and memory requirements. c. Test the connection when installing from a remote disk. d. Remove all existing data that may be on the server. Answers: B and C 5. Which two configurations are recommended when more than one disk is available for storage? a. RAID 0 b. RAID 1 c. RAID 5 d. RAID 10