Taken from the http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=1003&sliceId=1&docTypeID=DT_KB_1_1&dialogID=16568975&stateId=1%200%2016572032
 

Details

This article provides steps for increasing the maximum video resolution supported in the guest operating system.

Solution

Overview
To add additional video resolutions, several changes must be made to the virtual machine. Not all changes are required for all products and guests. The changes required are indicated by this article.

Add additional video memory to the [...]

OK the other day i faced this issue under snapshot manager i am not able to see any snapshot but yes but when i do a ls on my VM directory i see those delta disks , so if you are in this situation then follow these ….
Create a new snapshot and delete it. The [...]

These steps can be followed to achive the solution
. In the VMware Infrastructure Client (VI Client), you will notice a Scheduled Tasks button on the main toolbar click that one.
. Click New to create a new scheduled task.
. This will bring up the Schedule a Task window now choose the Make a Snapshot of a [...]

To back up host configuration data
Start the Remote CLI (or SSH) and log in.
You do not need to type the password on the command line. If no password is specified, the tool prompts you for the password without echoing the output to the terminal. This means the password you type is not visible in the [...]

To specify a new directory or datastore for snapshot files, follow this procedure.
When you specify a new working directory for a VM, the vswp file that is created when the VM is powered on is also stored in that location. If your VM is on a shared storage, and you specify local storage [...]

I’m guessing that most ESX administrators have experienced at least one time where a VM decides to hang leaving them unable to shut down or restart it.
You have half a dozen production VM’s running, you don’t have VMotion in place and this rogue VM that you need back up and running ASAP is sitting in [...]

vcbVmName

If we only know some of the details of a VM, but not all, we can use this query tool to ask VirtualCenter to report back all that it can find about it. For example, lets say you know you want to perform an image-level backup of a VM and the VM has IP address [...]

ifconfig

Used to determine what IP address you have, the equivalent of the ipconfig command in Windows. You can use the command without parameters to view all interfaces, or you can be interface specific, e.g.[root@esx1host] # ifconfig vswif0vswif0    Link encap:Ethernet  HWaddr 00:50:56:49:96:03
          inet addr:192.168.1.7  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4867312 errors:0 dropped:0 [...]

vmkfstools

Used to manipulate virtual disks at the service console command line. It is used most often for import and export operations, where a virtual disk is converted from monolithic format to sparse format (previously called COW format).There is a great switch with the command -X which can be used to extend the size of [...]

Configuration Files

/etc/vmware/esx.conf

An all new configuration file for ESX Server 3.x. This file replaces the functionality of the following configuration files found in earlier versions of ESX./etc/vmware/hwconfig/etc/vmware/devnames.conf/etc/vmware/vmkmodule.conf/etc/vmware/netmap.conf
/etc/vmware/vmkconfig
This file should not be copied from one ESX host to another in order to duplicate configuration, it is unique to the host. The file groups similar settings by [...]