Hitachi Storage Manager for VMware vCenter

Posted on November 21st, 2011 in Industry News, Storage, vCenter | No Comments »

Finally Hitachi Data System(HDS) released the Storage Manager Plugin for VMware vCenter server.

Hitachi Data Systems announces the availability of specific integration for VMware’s vCenter called “Hitachi Storage
Manager for VMware vCenter”. Hitachi, Ltd. and Hitachi Data Systems jointly developed this functionality in which this will
be installed as a separate plug-in for VMware vCenter. Customers upgrading to vSphere 4.1 and vSphere 5.0 using the
Hitachi Adaptable Modular Storage 2000, Hitachi Virtual Storage Platform or Hitachi Universal Storage Platform V will
automatically be able to leverage the capabilities of this key integration.
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Purple screen for ESX host during vSphere 5 Upgrade

Posted on October 27th, 2011 in ESXi, Tips, vCenter, Virtualization | No Comments »

Just read through 1 of the KB here which referring to the potential risk to create a purple screen scenerio during the vSphere 5 upgrade while you ESX host update 2 could potential conflict with the vCenter 5.

You may encounter an issue where:

  • You have recently upgraded your vCenter Server to version 5.0
  • You have hosts of minimum version ESXi 4.0 Update 2 (build 261974) and maximum version ESXi 4.0 Patch 9 (build 360236) in your vCenter Server inventory
  • After the vpxa agents are upgraded, the ESXi 4.0 Update 2 hosts experience a purple screen that includes this error:NOT_IMPLEMENTED bora/vmkernel/filesystems/visorfs/visorfsObj.c:3391
Solution
This issue has been resolved in ESXi 4.0 Update 3. To avoid this issue, upgrade all affected hosts to at least ESXi 4.0 Update 3 (build 398348) before upgrading vCenter Server to 5.0.
please refer to the full post here for more details.

Database requirement in Citrix Xendesktop

Posted on October 13th, 2011 in Tips, Virtual Desktop Infrastructure, Xen, Xen Desktop | No Comments »

I had gone through few days of hands on training for Citrix Xendesktop. The experience of the training is good and it went through technical deep dive. 1 of the key thing we discussed during the training was about the databases requirements to support the Xendesktop and Xenapp infrastructure. Microsoft SQL will be 1 of the key component, and you will require to plan for the high availability architecture to support the production environment.

The best approach may just consider to build an independent Active/Passive or Active/Active SQL cluster to support the infrastructure. A backup for the SQL is always recommended to create recovery point in the event of data corruption. Most data on the SQL databases is the configuration changes, log and etc. Similar to VMWare vCenter Database.

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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 :

%systemdrive%\Windows\SysWoW64\Odbcad32.exe

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Setup cannot create vCenter Server Directory Services instance

Posted on November 30th, 2010 in Tips, vCenter | 1 Comment »

While doing the VMware vCenter 4.1 setup on Windows 2008 R2 recently, I have encountered a problem “Error 28038. Setup cannot create vCenter Server Directory Services instance” after re-setup vCenter server.

The solution is simple as below:

Remove Active Directory Lightweight Directory Services (AD LDS) server role on Windows Server 2008.

  • Click Administrative Tools
  • Click Server Manager
  • Click Roles
  • Click Remove Roles
  • Click Next
  • Un-check Active Directory Lightweight Directory Services
  • Click Next
  • Click Remove
  • Click Close

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