May 22, 2015 asvignesh 1Comment

VSS hardware provider can be initiate and test using DiskShadow Commands Open the Powershell and Enter Diskshadow PS C:\Users\Administrator> diskshadow Microsoft DiskShadow version 1.0 Copyright (C) 2013 Microsoft Corporation On computer: WIN-VigneshDev, 5/22/2015 12:06:35 AM DISKSHADOW> List the Hardware Providers DISKSHADOW> list providers * ProviderID: {74600e39-7dc5-4567-a03b-f091d6c7b092} Type: [2] VSS_PROV_SOFTWARE Name: Hyper-V IC Software Shadow Copy Provider Version: 1.0.0.0 CLSID: {3e02620c-e180-44f3-b154-2473646e4cb8} * ProviderID: {89300202-3cec-4981-9171-19f59559e0f2} Type: [4] VSS_PROV_FILESHARE Name: Microsoft File Share Shadow Copy provider Version: 1.0.0.1 CLSID: {fce59da7-7bac-40da-8d21-3e7311ba51cd} * ProviderID: {b57190af-4567-4dd0-ad8d51abd60b20d5 Type: [3] VSS_PROV_HARDWARE Name: Vignesh Test Provider Version: 6.2.9200.16384 * ProviderID: {b5946137-7b9f-4925-af80-51abd60b20d5} Type: [1] VSS_PROV_SYSTEM Name: Microsoft Software Shadow Copy…

6+ years of experience in building data protection, copy data management and storage management applications, automation software and plugins for private and public clouds

Disclaimer :

This is a personal weblog. The opinions expressed here represent my own and not those of my employer. my thoughts and opinions change from time to time… This weblog is intended to provide a semi-permanent point in time snapshot and manifestation of the various memes running around my brain, and as such any thoughts and opinions expressed within out-of-date posts may not the same, nor even similar, to those I may hold today.

January 6, 2015 asvignesh

Inconsistent Backup The oldest type of backup probably not consistent. The process of taking the backup was so simple, backup application starts at the beginning of a file structure and copies all of the data until it reaches the end, resulting in a backup (Inconsistent). The reason which can make this backup inconsistent is that if any user added/modified after a backup but before it completed that would result in an inconsistent backup; the files in the backup are not consistent. Mainly the volumes which have Random read and random writes application like databases these types of backups do not…

6+ years of experience in building data protection, copy data management and storage management applications, automation software and plugins for private and public clouds

Disclaimer :

This is a personal weblog. The opinions expressed here represent my own and not those of my employer. my thoughts and opinions change from time to time… This weblog is intended to provide a semi-permanent point in time snapshot and manifestation of the various memes running around my brain, and as such any thoughts and opinions expressed within out-of-date posts may not the same, nor even similar, to those I may hold today.

October 9, 2014 asvignesh

VMware vCenter 5.1 and before the default behavior was to allow all domain admins to login and administrate your ESXi hosts. Once the 5.5 vCenter installed if you try and connect using a domain account you will get the error :The vSphere Client could not connect to “FQDN / IP”. You do not have permission to login to the server: FQDN / IP   To get domain credentials to work you need to login to the VMware vSphere Web Client and setup the relevant permissions. So how to login to vCenter using web client if domain users are not allowed?…

6+ years of experience in building data protection, copy data management and storage management applications, automation software and plugins for private and public clouds

Disclaimer :

This is a personal weblog. The opinions expressed here represent my own and not those of my employer. my thoughts and opinions change from time to time… This weblog is intended to provide a semi-permanent point in time snapshot and manifestation of the various memes running around my brain, and as such any thoughts and opinions expressed within out-of-date posts may not the same, nor even similar, to those I may hold today.

September 19, 2014 asvignesh

Setup Environment I have one Ubuntu server for iSCSI target and one Windows Machine for Initiator Target Server vignesh@vignesh-server:~$ sudo su root@vignesh-server:~$ apt-get update root@vignesh-server:~$ apt-get install iscsitarget Note : If you have changed the kernel version (Upgraded your Ubuntu ) you may hit FATAL: Module iscsi_trgt not found. if you hit this issue run apt-get install iscsitarget-dkms Creating Virtual Disk Create a new virtual disk of desired size,I am creating 5000M root@vignesh-server:~$ mkdir /mnt/iscsi root@vignesh-server:~$ dd if=/dev/zero of=/mnt/iscsi/scsivdisk.img bs=1M count=5000 Note dd is the Unix command , reads from STDIN and STDOUT but these can be change using if…

6+ years of experience in building data protection, copy data management and storage management applications, automation software and plugins for private and public clouds

Disclaimer :

This is a personal weblog. The opinions expressed here represent my own and not those of my employer. my thoughts and opinions change from time to time… This weblog is intended to provide a semi-permanent point in time snapshot and manifestation of the various memes running around my brain, and as such any thoughts and opinions expressed within out-of-date posts may not the same, nor even similar, to those I may hold today.

May 8, 2014 asvignesh 1Comment

This is reference article for VMware ESXi 5.x logs, their locations and use-cases. Log File Location Description Troubleshooting /var/log/auth.log ESXi Shell authentication success and failure Security /var/log/dhclient.log DHCP client service, including discovery, address lease requests and renewals Networking /var/log/esxupdate.log ESXi patch and update installation logs Updates, Security /var/log/hostd.log Host management service logs, including virtual machine and host Task and Events, communication with the vSphere Client and vCenter Server vpxa agent, and SDK connections. vCenter, Events, Security, Networking /var/log/shell.log ESXi Shell usage logs, including enable/disable and every command entered Security /var/log/sysboot.log Early VMkernel startup and module loading Host /var/log/syslog.log Management service…

6+ years of experience in building data protection, copy data management and storage management applications, automation software and plugins for private and public clouds

Disclaimer :

This is a personal weblog. The opinions expressed here represent my own and not those of my employer. my thoughts and opinions change from time to time… This weblog is intended to provide a semi-permanent point in time snapshot and manifestation of the various memes running around my brain, and as such any thoughts and opinions expressed within out-of-date posts may not the same, nor even similar, to those I may hold today.

April 14, 2014 asvignesh 10Comment

VMware Vcenter 5.1 and before the default behaviour was to allow all domain admins to login and administrate your ESXi hosts. Once the 5.5 vCenter installed if you try and connect using a domain account you will get the error :The vSphere Client could not connect to “FQDN / IP”. You do not have permission to login to the server: FQDN / IP   To get domain credentials to work you need to login to the VMware vSphere Web Client and setup the relevant permissions. So how to login to vCenter using web client if domain users are not allowed?…

6+ years of experience in building data protection, copy data management and storage management applications, automation software and plugins for private and public clouds

Disclaimer :

This is a personal weblog. The opinions expressed here represent my own and not those of my employer. my thoughts and opinions change from time to time… This weblog is intended to provide a semi-permanent point in time snapshot and manifestation of the various memes running around my brain, and as such any thoughts and opinions expressed within out-of-date posts may not the same, nor even similar, to those I may hold today.

February 18, 2014 asvignesh 4Comment

The OVF in vSphere is not just about deployment and packaging. There is also a runtime part, namely the OVF environment. This is a feature that has been around since the early days of vSphere 4.x, if not earlier which provides a mechanism to retrieve some of this information as well as custom properties. The OVF feature provides users with the capability to pass in any type of metadata information such as application start up parameters, network configuration, password management, etc. directly into the guestOS for flexible guest customization. In this post, i will show how to fetch the runtime…

6+ years of experience in building data protection, copy data management and storage management applications, automation software and plugins for private and public clouds

Disclaimer :

This is a personal weblog. The opinions expressed here represent my own and not those of my employer. my thoughts and opinions change from time to time… This weblog is intended to provide a semi-permanent point in time snapshot and manifestation of the various memes running around my brain, and as such any thoughts and opinions expressed within out-of-date posts may not the same, nor even similar, to those I may hold today.

February 17, 2014 asvignesh 1Comment

VMware Tools is a suite of utilities that enhances the performance of the virtual machine’s guest operating system and improves management of the virtual machine. For example, the following features are just some of the features that are available only if VMware Tools is installed: Significantly faster graphics performance and Windows Aero on operating systems that support Aero The Unity feature, which enables an application in a virtual machine to appear on the host desktop like any other application window Shared folders between host and guest file systems Copying and pasting text, graphics, and files between the virtual machine and…

6+ years of experience in building data protection, copy data management and storage management applications, automation software and plugins for private and public clouds

Disclaimer :

This is a personal weblog. The opinions expressed here represent my own and not those of my employer. my thoughts and opinions change from time to time… This weblog is intended to provide a semi-permanent point in time snapshot and manifestation of the various memes running around my brain, and as such any thoughts and opinions expressed within out-of-date posts may not the same, nor even similar, to those I may hold today.

February 3, 2014 asvignesh

There are two ways to enable / diable VAAI plugin, One via command line and one via vSphere Client UI Using command line Login to ESXi using putty / terminal Use “esxcfg-advcfg” command to manage your VAAI settings  To Check the Status esxcfg-advcfg -g (returnvalue 1 = enabled) ~ # esxcfg-advcfg -g /DataMover/HardwareAcceleratedMove Value of HardwareAcceleratedMove is 1 ~ # esxcfg-advcfg -g /DataMover/HardwareAcceleratedInit Value of HardwareAcceleratedInit is 1  To disable VAAI ~ # esxcfg-advcfg -s 0 /DataMover/HardwareAcceleratedInit Value of HardwareAcceleratedInit is 0 ~ # esxcfg-advcfg -s 0 /DataMover/HardwareAcceleratedMove Value of HardwareAcceleratedMove is 0 To enable VAAI ~ # esxcfg-advcfg -s…

6+ years of experience in building data protection, copy data management and storage management applications, automation software and plugins for private and public clouds

Disclaimer :

This is a personal weblog. The opinions expressed here represent my own and not those of my employer. my thoughts and opinions change from time to time… This weblog is intended to provide a semi-permanent point in time snapshot and manifestation of the various memes running around my brain, and as such any thoughts and opinions expressed within out-of-date posts may not the same, nor even similar, to those I may hold today.

February 3, 2014 asvignesh 2Comment

VAAI vStorage API for Array Integration (VAAI) is a technology that VMware makes available for storage vendors to offload the storage operation like cloning , space reservation from the ESX CPU to the storage array. What is VAAI? VMware vStorage APIs Integration (VAAI) is a set of APIs provided by VMware that allows the ESXi hosts to offload data processing of certain storage-related services like full file cloning, extended statistic and space reservation to storage array Host. Benefits of VAAI NAS: The integration of Storage array with VMware VAAI-NAS offers datacenter administrators deploy a VMware virtualized environment with optimized performance….

6+ years of experience in building data protection, copy data management and storage management applications, automation software and plugins for private and public clouds

Disclaimer :

This is a personal weblog. The opinions expressed here represent my own and not those of my employer. my thoughts and opinions change from time to time… This weblog is intended to provide a semi-permanent point in time snapshot and manifestation of the various memes running around my brain, and as such any thoughts and opinions expressed within out-of-date posts may not the same, nor even similar, to those I may hold today.