Wednesday, October 19, 2016

A note of what’s New in vSphere 6.5

Yesterday, VMware announced vSphere 6.5 at VMworld Europe 2016 and in this post I am listing some useful links related to what’s new and related feature introduction of this version for future reference.
Beside other new features here are the few big things introduced with vSphere6.5,

VM-level native encryption via SPBM
Encrypted vMotion
vCenter High Availability
Proactive HA 
Orchestrated VM Restart using HA
Network-aware DRS
HTML5 vSphere Client
Automatic Space Reclamation (UNMAP)
Support for VVol Replication (VASA 3.0)
External protocol support for VSAN (iSCSI) 
Photon Platform support for VSAN

For Quick summary of all the new  features of vSphere 6.5, please have a look here, Quick summary of What’s New in vSphere6.5 
For detailed info please go through below links,

In future would add other related links to this post.

That’s it… :)

Friday, October 7, 2016

How to Log off window user remotely

Back to basics.....This is something that we have a do every now and then because people (most of the time fellow IT guys) are so lazy ;) and tends to close the windows remote session directly instead off logging off properly and due to this when you try to login on a remote server, end up with Terminal server exceeded maximum connection limit message.

Note: This is basically useful on legacy windows OSs, like 2003 and prior, yeh  some of us might still have those servers. In windows server 2008 and later, if maximum remote sessions are in use, apart from this method during remote login it pops up a window to request or forcefully disconnect any active user (if you have adequate rights to do so). 

If you have the adequate windows privilege then can easily clear remote sessions remotely ;)

To do so, open command prompt on any other machine and run below commands,

First run following command to get a list of connected users,

C:/>quser /server:target _server_name

The output of this cmd would be a list of logged in user with corresponding session ID, note down the session id of remote user (eg. 1, 2, 3,…) you want to logoff, now

C:\>logoff session_ID /server:target_server_name

Once you hit enter, the user will logoff from remote computer and you are done here.

That's it... :)

Sunday, October 2, 2016

Getting error while trying to add a new virtual disk to VM

I have seen this error couple of time and every time it takes me some time to recall the cause, so thought of making a note of this very basic thing that one need to remember when adding a new drive to a VM.

You might have came across this error while trying to add a new drive (Thin or Thick Lazy zeroed) to a Virtual Machine,

VMware ESX cannot open the virtual disk "/vmfs/volumes......vmdk" for cludtering. Verify that the virtual disk was created using the thick option.......

This error is nothing but you have a RDM drive attached to VM in Physical mode and newly added drive is trying to use the same drive controller.

Only Thick Provisioned Eager Zeroed drives can be added to a disk controller having physical mode RDM attached. Here to add a Thin or Thick Provisioned Lazy Zeroed dive, either we need use any other existing non physical mode disk controller or add a new one .

That's it... :)