tag:blogger.com,1999:blog-15426265538953717252025-02-10T01:56:14.921-08:00IT KnowledgeBase for DummiesAnup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comBlogger18125tag:blogger.com,1999:blog-1542626553895371725.post-53627930718798492552014-05-11T05:27:00.002-07:002014-05-11T20:42:36.084-07:00

The below error may come up when you boot up the computer or when you open an application. Here is how you will solve this. Go to Start >> Run >> Type Regedit and hit enter. This will open the windows registry. Expand: HKEY_CURRENT_USER >> Software >> Microsoft >> Windows >> Current Version >> highlight Run >> Delete the value which

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-69641196527931090832014-05-11T05:24:00.000-07:002014-05-11T21:25:42.590-07:00

Many a time while troubleshooting issues with various applications I have had troubles with services going to a hung state. When the service is in a stopping state you can simply go ahead and kill it from the task manager but what when it is hung at "starting" ? Also not all services run as processes in task manager. For instance, if Exchange POP3 service is stuck in a 'stopping' state. You

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-77005308101889122102014-05-11T04:55:00.004-07:002014-05-11T04:55:52.069-07:00

In any network when a switch is initiated, a connection is established between all devices connected to it. So is in a SAN network. A "Fabric" in a SAN environment is referred to a SAN switch. A network without any restrictions to the storage unit compromises on security, availability and management of storage. This problem can be solved by "Zoning" which is a feauture in fabric switches.

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-36739658419444940712014-01-12T06:41:00.003-08:002014-05-11T20:49:33.675-07:00

Many of the administrators who are new to linux have problem with opening file from a cdrom or to install application from a CD on a linux platform. The below steps must help you. # mount /dev/cdrom /cdrom This will show following result: mount: mount point /cdrom does not exist. Now change the directory to / if you are not there: # cd / Here create a directory to mount the CD

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-75137308579224567612013-11-26T22:35:00.002-08:002014-04-30T14:56:13.558-07:00

While cloud computing is still a relatively new technology, there are generally three cloud service models, each with a unique focus. The American National Institute of Standards and Technology (NIST) defined the following cloud service models: Software as a service (SaaS) This capability that is provided to the consumer is to use the applications that a provider runs on a cloud

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-23428935985736151692013-11-26T22:10:00.000-08:002014-04-30T14:56:44.772-07:00

Cloud computing is a model for enabling universal, convenient, on-demand network access to a shared pool of configurable computing resources (for example: networks, servers, storage, applications, and services). These resources can be rapidly provisioned and released with minimal management effort or service provider interaction. Below figure shows an overview of cloud computing. Cloud

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-66720428089503861492013-11-26T21:03:00.000-08:002014-04-30T14:56:52.540-07:00

NetBackup is available in three editions to support organizations ranging from SMBs to large enterprises. See the table below: There are two primary architectures deployed by NetBackup 1. Two-Tier (NetBackup Enterprise Server) 2. Three-Tier (NetBackup Server) To make things easy to understand I will explain Three Tier Architecture first. NetBackup Enterprise Server Architecture (

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-39615428177987836262013-11-26T20:52:00.001-08:002014-05-05T11:28:55.554-07:00

1. Deduplication is not enabled by default. You must enable it and manually configure it in Server Roles | File And Storage Services | File and iSCSI Services. Once enabled, it also needs to be configured on a volume-by-volume basis. 2. Content is only deduplicated after n number of days, with n being 5 by default, but this is user-configurable. 3. Deduplication can be constrained by

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-40292676753214770062013-07-17T04:53:00.002-07:002014-04-30T14:57:10.458-07:00

Linux boot process includes 3 stages: 1. The BIOS Stage 2. The bootloader Stage 3. The Kernel Stage The BIOS Stage The Linux boot process starts with the BIOS stage. The basic input/output system, BIOS is a small memory module on the motherboard. It's used during the boot process to initialize a system's hardware components. The BIOS uses the information stored in the C MOS chip - another

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-73713694317783775582013-07-17T02:39:00.002-07:002014-04-30T14:57:20.935-07:00

Floppy Disks Solid State Drives or SSDs Optical Storage Devices Flash Drives Hard Disk Drives Floppy Disks A floppy disk consists of a thin, oxide-coated magnetic disk that's protected within a hard, plastic shell. They are largely obsolete. They can store a maximum of 1.44 MB per 3.5" disk and have slow data transfer rates. They are also vulnerable to damage due to environment conditions

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-61767235606655827992013-04-18T06:38:00.000-07:002014-05-11T06:10:38.393-07:00

Error 1935. An error occurred during the installation of assembly 'Microsoft.VC80.MFCLOC, version="8.0.50727.762",pubicKeyToken="1fc8b3b9a1e18e3b",processorArchitecture="amd64",type="win32" This is issue occurs when you are trying to install Microsoft Visual C++ Redistributable package or when you are trying to install a software that needs Microsoft Visual C++ binaries. This is typically

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-14573381425811629482013-04-17T04:17:00.002-07:002014-05-11T06:06:53.499-07:00

Following is a workaround to install Backup Exec Remote Agent on a Windows machine. This is not a fix. There may be times when you cannot install RAWS due to Microsoft issues. For example, when windows installer is corrupted, error 1935, some .NET issues and times when you are left out with no troubleshooting. TAKE A BACK OF REGISTRY BEFORE PERFORMING ANY REGISTRY CHANGES You are unable to

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-59307125200918812372012-10-14T15:02:00.000-07:002014-05-12T23:41:58.298-07:00

I have been searching and searching and found so many instructions on how to remove the spacing between the posts. I tried editing the HTML changing different themes and nothing worked. And found this silly thing while browsing through all the options on the dashboard. "Show ads on blog" and this was chosen to be a "YES". Changed this to "NO" and Alas !! there you go.. the spacings between the

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-68931427753331093772012-10-14T01:38:00.000-07:002014-05-11T09:38:52.228-07:00

ARP: Address Resolution Protocol In order for the ip communication to take place between 2 computers it is necessary that the MAC address should be known to each other. If device A with ip address "192.168.1.11" needs to communicate with device B with IP address "192.168.1.1" and transfer data, device A should know the MAC address of device B. * Used to find unknown MAC address using a

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-85292947784742348382012-10-14T01:37:00.000-07:002014-05-11T09:34:45.128-07:00

There are 2 versions of IP addresses. IP version 4 and Version 6. Ip version 6 will be soon introduced in real times. I will discuss ip version 6 on a later chapter. As of now lets discuss the ip version 4 which is the addressing scheme in use now. Ip stands for Internet protocol. Formed by IANA(Internet Assigned Numbers Authority and ICANN(Internet Corporation for Assigned Number and Names).

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-75644492756933050102012-10-14T01:36:00.000-07:002014-05-11T09:38:12.628-07:00

OSI (Open System Interface) It defines how data communication happens, the protocols involved. PHYSICAL LAYER * First layer of OSI model. * Represents the bits. * It deals with :- Transmission media for data communication. Electrical and mechanical functions of interface or ports or media. Procedures and functions of transmission media. Examples: Hardware: Network adapter, Repeater,

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-25438679502243842892012-07-29T02:48:00.002-07:002014-05-13T00:19:10.960-07:00

This applies to Windows Vista, Windows 7 and Windows 2008 servers. This usually happens after a windows update as was for me but also occurs when you update some drivers. Some commands which requires a reboot. Your OS might scare you when you reboot and it says:  "Configuring Updates: Stage 3 of 3" Dont worry try the following :- 1. Get into advanced boot options by hitting

Anup Sudhakaranhttp://www.blogger.com/profile/14610514356411074083noreply@blogger.comtag:blogger.com,1999:blog-1542626553895371725.post-91654842801431231662011-12-19T18:55:00.000-08:002014-05-11T09:39:40.900-07:00

Straight-Through Cables Out of the 8 pins that exist on both ends of an Ethernet cable, each pin connects to the same pin on the opposite side. Straight-through cables are primarily used for connecting unlike devices. A straight-through cable is typically used in the following situations: Use a straight-through cable when: Connecting a router to a hub Connecting a computer to a swtich

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