VMware vSphere 4.1 Update 1 on SQL 2008 R2

Posted on June 8th, 2011 in Tips, vCenter, vSphere | No Comments »

Microsoft SQL 2008 R2 had been officially supported for VMware vSphere 4.1 update 1. Previously it doesn’t supported if you are not on update 1. I just did an upgrade yesterday and here is some finding to share. 1st, I tried to perform an upgrade as usual, and of course I retain all the database information to prevent reconfiguration and performance data lost for the previous environment. Unfortunately, the update manager portion had given error which it not allowed us to continue the installation. It left me no choice that a re installation will be required. If you hit to the same situation, do not panic as your previous configuration will still retain, and no down time require even you are on dVswitch. Ensure no host name changes in this case will be safe enough for you to proceed further.

During the re-installation, you I will suggest you follow the sequence to un-install all the vCenter application 1 by 1. Update Manager required to be un-install before you uninstall the vCenter server. You can backup and re-attach the SQL DB as the MDF and LDF files is in place. If your vCenter is on virtual environment, strongly recommend a snapshot taken before any changes been made. Once you re-attach the DB, you will require to perform the DSN connections to be created from ODBC.

Here is the tricky part you need to take note. It take me 2 hours to figure out due to some confuse and mistake. vCenter Server will able to run on 64 bits DSN as standard, you will not face any issue on that. When come to update manager, DO NOT try to access the ODBCAD32.exe from start run directly on windows. It will point you to the 64 bits ODBC configuration tab. You will require to browse to the path directly as :


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VMware vSphere 4 with Cisco Nexus 1000V Useful or Useless?

Posted on February 4th, 2011 in Tips, Virtualization, vSphere | No Comments »

This week, I am away for Chinese New year break. Right before the break, I had heard some interesting feedback from my close buddy which talked about the topic here. Had been a while we didn’t hear any argument or comment that mentioned Cisco Nexus 1000V is useless or doesn’t meant anything. Previously, I had heard this from many competitors, partners & client previously, so it doesn’t surprise me when my buddy shared his story to me.

Well, there are many users, partner, or even principle who are reluctant to accept changes or new thing, which claimed nexus 1000V doesn’t bring any value while created problems to their day to day job. The main reason behind as they struggling to manage and configured nexus 1000v, mostly because they are just not the right person to manage it. Please do not feel offended with this statement, as I am telling the truth which myself are not the right person to configure SAP, Oracle, BI cognos too. We always need specified specialist and expertise from different area to compliment each others in IT environment.

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VN-Link and Cisco Nexus 1000V Confusion

Posted on June 26th, 2010 in Data Center, Hardware, Tips, vSphere | No Comments »

Recently there are many confusion about these new terms VN-Link & Cisco nexus 1000V which been widely communicated to the IT user groups. Where were the confusion come from? Most of the time, we are getting confuse about what is VN-Link meant by Cisco. Below is some short description you may want to refer to.

Cisco Nexus 1000V is a enhance virtual distributed virtual switch which integrate to the VMware vSphere 4. With Cisco Nexus 1000V, you will contain VSM and VEM, which VSM will be the virtual appliances that host the management of Nexus 1000V, and VEM will be installed on each ESX host that been connected to the Nexus 1000V.  I will not go in too details about Nexus 1000V in this post as my intention is to clear up the confusion on the VN-Link meant by Cisco.

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Storage vMotion with Thin Provisioning

Posted on April 20th, 2010 in Storage, Tips, vCenter, Virtualization, vSphere | No Comments »

Some interesting finding to share during the last migration I did. I was performed the cold migration for all the virtual machines on the production. Before we migrated over to the new SAN storage, all the current virtual machines are running with thin provisioning enable from vSphere 4. During the storage migration process, you will need to choose either same as source, thin provision or none thin provision. I had chosen same as source option and perform the storage vmotion. After the storage vmotion done, I realized that the virtual machine had no longer with thin provision enable.

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Security Hardening reference guides for VMware vSphere 4

Posted on January 27th, 2010 in Tips, Virtualization | No Comments »

Just found this from Duncan’s blog today and I think is important to share with every VMware administrator. The security hardening reference guides are available from VMware now. You can read the full details from here. I will suggest all the VMware administrator to read this and consider to implement the necessary configuration to secure the virtual infrastructure. These documents are not final yet and still in draft version but I do find it is helpful for everyone to understand and consider about the security hardening from every aspect.

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