Performance related issue with VM(s).

If you are experiencing performance issue in your environment, you can ask the below questions to isolate the problem first hand. Logical approach to isolate the problem should be where is the performance issue identified, that is, who has identified the issue. What is / was his experience. What does the Task Manager / Resource …

vCenter Server High Availability

vCenter Server High Availability or vCenter HA, is one of the most promising feature of vCenter Server 6.5, which provides highest availability for the vCenter Server, without any Microsoft Windows Clustering. Prior to version 6.5, high availability for the vCenter Server could be achieved by means of clustering of Windows based vCenter Server (Supported version …

vCenter Server service is not accessible.

This article is going to showcase you how to approach this issue as I have seen during my days that the customers have tried restarting the services / server so many times that the logs have been rolled over and there is no way left to identify what caused the problem in the first place. …

STORAGE CONNECTIVITY TO VSPHERE

The VMware vSphere storage architecture consists of layers of abstraction that hide the differences and manage the complexity among physical storage subsystems. To the applications and guest operating systems inside each virtual machine, the storage subsystem appears as a virtual SCSI controller connected to one or more virtual SCSI disks. These controllers are the only types of …

VIEWING ACTIVE TCP/UDP CONNECTIONS WITH NETSTAT AND ESXCLI NETWORK

When troubleshooting network connectivity issues, it may be helpful to see all the active incoming and outgoing TCP/UDP connections on an ESX/ESXi host. ESX hosts can use the netstat command and ESXi 4.1 and later hosts can use esxcli network to show the list of TCP/UDP connections. The commands are: ESX 3.5/4.x – # netstat -tnp ESXi 4.1 – # esxcli …