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  VMware vSphere Disk Provisioning for a Virtual Machine
Posted by: gotzuadmin - 01-29-2017, 04:17 PM - Forum: VMware - No Replies

VMware vSphere Disk Provisioning for a Virtual Machine

There are two type of provisioning; Thin and Thick but in production Thick is widely practiced. Thick provisioned disk takes entire allocated space and give better performance. Though thin provisioned disk does not require entire allocated space immediately but if you have more number of thin provisioned disks in your vSphere environment, high chances are that datastore will run out of disk space. More over performance too is lower in thin provisioned disk as compared to thick provisioned disk.

Apart from provisioning disks you will have to be careful in selecting type of Virtual disk; i.e. Independent disk or non-Independent. First and far-most Independent disks are non-snapshot supportive. That means if you create an Independent disk you have further two options to select which are Persistent or Nonpersistent.

If you select an Independent disk in Persistent mode that means data is written to disk permanently.

If you select an Independent disk in Nonpersistent mode that means data written to disk is not permanent. The Virtual machine will loose all changes when it is rebooted. 

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  vSphere esxi 6.0 few new features added
Posted by: gotzuadmin - 01-29-2017, 04:15 PM - Forum: VMware - No Replies

-ESXi 6.0 support VM Virtual Hardware Version 11.

-Few other enhancements are support for 128 vCPUs, 128 TB RAM, Hot-Add RAM to vNUMA, WDDM 1.1 GDI Acceleration.
-Maximum virtual disk size now is 64 TB.
-The USB 3.0 xHCI Controller is upgraded to xHCI controller version 1.0. It supports both USB 3.0 and 2.0. Total 8 reserved ports; 4 for USB 3.0 and 4 for 2.0.
-VMXNET3 Driver is upgraded to Large Reciev offload. This is a hardware offload technique which help reduce CPU cost for network packet processing by aggregating multiple incoming transmission control protocole or TCP/IP packets into one single packet.
-Each VM can support upto 32 serial ports.
-Serial and parallel ports can now be removed from a virtual machine when using compatibility 6 (vHW 11).
-The HDFS driver has been enhanced to reduce the number of reboots required when installing VMware Tools.

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  The VMRC console has disconnected attempting to reconnect
Posted by: gotzuadmin - 01-29-2017, 04:13 PM - Forum: VMware - No Replies

Recently I am experiencing problem seeing console of VM through vCentre Vsphere 5.0. When I click on console of any vm it show below error:
The VMRC console has disconnected attempting to reconnect..

To resolve this I have tried few steps as below:

1. Rebooted the host.
2. Migrated VM to another host.
3 Rebooted the VMs

I have two hosts and each has couple of VMs. Console of every VM and under both host give above error. 

Thank You 

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  How to create iSCSI target on windows server 2008 R2 for ESXi host
Posted by: gotzuadmin - 01-29-2017, 04:12 PM - Forum: VMware - No Replies

http://www.microsoft.com/en-in/download/...x?id=19867 . Once installed launch Microsoft iSCSI software target and configure it as below:
1. In Microsoft iSCSI console Right click on iSCSI targets and click 'Create iSCSI target'.
2. Click next.
3. Name the target and click next.
4. Under IQN identifier tab add the the WWN name of your ESXi host if it is not listing upon clicking browse. You can get it by login to your ESXi host from vSphere client > click Storage adapter > iSCSI software adaptor. 
5. Click next and finish.
6. Now we have to create a disk and assign it to this iSCSI target. 
7. Right click Devices in Microsoft iSCSI console. Click create virtual disk and click next.
8. Browse to the location to save this vhd and name with extention as yourVHD.vhd.
9. Click Next and allocate the size in MBs. Click next
10. click Add and select the iSCSI target created at steps 1 to 5 above. 
11. Click next and finish.
12. Click to select Devices > right click the yourvhd.vhd > disk access and click mount read/write.
13. Now our LUN is ready to be presented and discoverable by vmware ESXi host.

Now addin this LUN to our vmware esxi host.
1. Login to esxi host from vSphere client.
2. Go to Configuration>storage adapter 
3. Click vmhba33 under iSCSI software adapter and click propeties.
4. Under general tab click configure and enable.
5. Click static discovery > click add and type IP address of iSCSI server > iSCSI target name. Click OK
6. Click scan All and the iSCSI softwer adapter will display the LUN.
7. Now go to Storage and click rescan all. Select the discovered LUN and click Add Storage > select disk/LUN and click next name the datastore > click next finish.
8. You have the new Datastore available for hosting VMs.

Please share your valuable suggestions and feed back. 

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  Creating NFS storage on windows 2008 for ESXi host
Posted by: gotzuadmin - 01-29-2017, 04:11 PM - Forum: VMware - No Replies

This article is to know how we can create and NFS storage on a windows server 2008 R2 and present to ESXi 4.1 host as a datastore.

This article is to know how we can create and NFS storage on a windows server 2008 R2 and present to ESXi 4.1 host as a datastore.

First Let us create a NFS storage on Windows server 2008 R2.

1. Open Server manager.

2. Click Add Role and add File server role and Services for Network File System.

3. Add AD lightweight Directory Services role and select add all Features. 

4. Once above roles are added reboot the server.

5. Log back in to the server and create a new folder on the partition which has required space. Name this folder say NFS.

6. Right click the NFS folder and go to properties page.

7. Go to NFS Sharing tab on properties page > click Manage NFS sharing tab.

8. On NFS Sharing page check box 'Share this Folder', all check box under it should be checked except "Kerbores v5 integrity and Authentication". Click radio button which say Allow unmapped user unix access.

9. Go to Permissions tab, and select read write and allow root access check box checked. 

10. Exit by clicking OK.

Adding this NFS share to ESXi host.

1. Login to vspher client. Make sure VM Kernel Port is added. But if you have vMotion or iSCSI storage added then you already have it.

2. Go to Configuration tab, click Storage and click add storage.

3. On server box add fully qualified name of the server hosting NFS storage or the IP address.

4. In Folder box /NFS/ i.e. the name of NFS share.

5. Name it say NFS.

6. Click next, finish and you have the NFS added.

Please do share your valuable suggestions and feedback. 

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  How to Create a VMWare lab on your machine
Posted by: gotzuadmin - 01-29-2017, 03:53 PM - Forum: VMware - No Replies

I have seen lots of posts by newly certified VCPs to know how they can create labs for testing and to enhace the knowledge they gained after certification. Creating VM ware "labs" is an expensive thing and not every one can afford. This post of mine is to help those who don't want to spend too much but still want to have Lab where they can create/break/troubleshoot things as they want and experiment things learnt in VCP course. 
I started working on VMWare esxi host when 3.0 was about to come in market and after gaining few years of experience I thought of going for certification. This was the time when esxi host 4.5 was much talked about. I would like to thank Mr. Abdullah who was instructor for delivering such good lactures. After completing my certification I wanted to do lot of experiments with HA, vMotion, FT etc. but unfortunately could not find environement. The IT consultant company for which I am working has lots of virtualisation environment but at no client site we are using vCentre. So I made up my mind to buy a new system which can support virtualisation. Boght a new system with following configurations. 

Processor - Intel Core i7 2600
M.Board - ASUS Extreme GENE-Z
HDD - 512 gb SATA
NAS device for creating shared storage. 

Here is how I created my LAB with two esxi host 4.5 and a vCenter.

-Installed win7 utltimate on 100gb partition. 

-Created two primary partition of remaining disks.

-Installed VM ware workstation 8 on one partition.

-Created 3 VMs in VMware Workstation. 1 for windows 2003 with 64 bit VM and 2 for esxi VMs.

-Installed windows server 2003 64 bit on the windows machine.

-Installed esxi 4.5 on each of the other VM. Configured IP and host name for both the hosts.

-Kept documenting stuff and I advise same to you too.

-Once both the Esxi hosts were accessible from another machine LAN, created 2 windows VM in each host.

-Installed vCenter on the windows 2003 server 64 bit which was created on vmware workstation 8.

-Accessed vCenter over the network and added both the esxi host to it.
-Here is your vmware lab ready with two esxi hosts which are being managed from vCentre.
You can do as much as experimentation as you like. If you already have a machine with mother board and processor supporting VT, you can go ahead with creating above lab. If this article of mine is helpful to you do drop your feedback. Please experiment and share your findings which might be helpful for all. 
Thanks for reading and suggestions are welcomed.

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