The Technology Chronicle

Issue: In disk management, disk is shown as missing or Offline in Windows Resolution: The disks can be made online by using diskpart utility - Open a command prompt->type diskpart -Inorder to list the disks in the system type: list disk -Note down the number of the disk that you want to make online -Select that disk to operate upon, For eg:, if the disk number is 1, type: Select disk 1 -Now that particular disk will be selected as teh active disk. If you type "list disk" command once more, you can see a * symbol on the left side of the selected disk -Inorder to make the selected disk online type : online disk - If the disk is made online, you will get a message that the operation is completed successfully

vSphere 5 components and features; Vmware ESXi : Well, this is the physical part of vSphere. The virtualization OS installed in  in physical servers and bastracts the physical resources of the server and distributes them across VMs. VMware vCenter : It is the vsphere centralised management software. It is essential for configuring and managing the full potential of vSphere say HA, DRS etc vSphere client: A client software that lets users connect remotely to Vmware ESXi and vCenter vSphere web client: A web interface that allows users to connect remotely to vCenter client or ESXi vSphere SDKs: Provides standard interfaces for VMware and third party solution to access VMware vSphere VMFS : A high performance cluster file systems for ESXi virtual machnes vSphere virtual SMP: Enables single virtual machine to use multiple physical processors simultaneously vMotion: Enables migration of virtual machines from one datastore to another without service interruption* vSphere HA: If the ...

Scenario: Sql server 2008 R2 standard installed with default instance. The default instance name is "mssqlserver". Issue: While trying to connect to instance name using servername\mssqlserver from server management studio, an error is thrown and user is unable to connect . Reason: Reason, it turns out to be that you cannot connect to the default instance by its name mssqlserver.For some strange reason, it is not allowed!!!! Solution: You can connect using the server name alone. Or if you are trying from the machine where sql is installed,you can connect to the local instance.Or else if your application demands a  "servername\instance format,you could run the sql installer once more and create a named instance

Issue: One of our newly created test datacenter was having trouble in creating resource pool..The option was simply greyed out!!!. Solution: DRS was  disabled in the cluster.once that was enabled, resource pool creation option was no longer grayed out...

“Cloud computing” is basically the latest incarnation of grid computing, utility computing, virtualization and clustering. It differs in that it provides the ability to connect to software and data living on the Internet (the cloud) instead of on a hard drive or local network. 1. SaaS   This type of cloud computing delivers a single application through the browser to thousands of customers using a multitenant architecture. On the customer side, it means no up-front investment in servers or software licensing; on the provider side, with just one app to maintain, costs are low compared to conventional hosting 2. Utility computing   Amazon.com, Sun, IBM, and others offer storage and virtual servers that IT can access on demand. Early enterprise adopters mainly use utility computing for supplemental, non-mission-critical 3. Web services in the cloud   Closely related to SaaS, Web service providers offer APIs that enable developers t...

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Download regfind.exe from here  .Extract the zip file .Browse to the extracted location from command prompt and run the utility using the following syntax regfind   -m \\computer1 -p HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\parameters "Old DNS IP" -r "New DNS IP" Where Cumputer1 can be the name or Ip of the remote machine whos DNs is to be changed Once the command completes successfully, the old dns IP in the server will be replaced by the new one