Wu's Blog

Today I got a special problem I want to share with you. I tried to install SCVMM 2012 SP1 console on my Windows 7 VM to do some troubleshooting, but I get error message "Generic Trust Failure" when I click Install button in SCVMM 2012 SP1 installer, it mentioned something related to Microsoft Visual C++ 2010 x86 Redistributable. I tried to run Microsoft Visual C++ 2010 x86 Redistributable installer from image folder directly, it show me exactly same error message. Nothing I found on google, but most posts pointed to signature. After deep dive into the problem, I figured out a solution: Go to  PrerequisitesVCRedisti386 folder of SCVMM 2012 SP1 image. Copy  vcredist_x86.exe to local disk. Extract the executable file to a folder. (You have to install WinZip or something else to do that) Enter the extracted folder, right click Setup.exe . Select Properties . Go to Digital Signatures tab. Highlight the certification and click Details . Click View Certification

I discussed this topic with a group, some people think firmware upgrade is not required if ESXi host working fine, that's adapted to small business, but I think enterprise can do more better. My ESXi running on HP blades, I'll use that platform for example to share my thought and experience. Why you need a plan for HP blade firmware upgrading of ESXi host? First voice around my head is " We suggest you upgrade firmware to latest version". You may experience similar like me when you call HP for helping, that's look like HP official statement whenever we suspect a problem related to hardware. ;-) You know how hard to upgrade bulk of ESXi hosts to troubleshooting a network/storage problem, especially your hosts are running on older version, it may be extremely time consuming. So keep firmware up to date will save troubleshooting time, also make your life easy. :-) Even no issue on hardware, you may still need to upgrade software, it's rarely but some maybe confl

First, I would like to recommend DELL M4800 for small home lab, I spent lot of time to looking for a solution for my lab, I need some hardware low noise, low weight, and it is better portable. I checked out HP mini server, Apple MAC mini, Mac book pro...etc. They are nice products to show best design of IT industry, but no one perfect. Finally I choose DELL M4800. The reason is RAM can be upgraded to 32GB. 3 SSD hard disks is supported, you can install one native SSD, one in CD-ROM slot, another msata SSD in WAP slot. SSD disk is must have for IT LAB, it can provide you more than 10K IOPS without significant performance degrade. Okay, back to topic...if you want to testing Windows Server 2012 R2 Hyper-V on lab, you probably prefer install it on a VM of VMware Workstation. You have to follow up proper steps to make sure the Hyper-V functionally. After you create Hyper-V VM: Keep VM power off status. Go to Settings of VM. Highlight Processors . Select Virtualize Intel VT-x/EPT or

Finally I implemented Hyper-V 2012 and SCVMM 2012 R2 on my lab, unfortunately FreeNAS does not supports SCSI-3 persistent reservation of Windows Server 2012 R2, you can refer bug #4003 . It lead to my iSCSI storage cannot be brought online in Failover Cluster. I have to find out alternative. I decided to use Windows Server File Server instead of iSCSI eventually. There are bunch of benefit to use that to leverage new SMB 3.0 technology. Key is it supports high available. Followed the guide I successful created first shares for Hyper-V cluster, I created a testing VM but cannot power it on. It show me: Error (12711) VMM cannot complete the WMI operation on the server (dcahyv02.contoso.com) because of an error: [MSCluster_Resource.Name="SCVMM test (1)"] The cluster resource could not be brought online by the resource monitor. The cluster resource could not be brought online by the resource monitor (0x139A) Recommended Action Resolve the issue and then try the operation

I think Windows Server 2012 will be next popular server OS just like Windows Server 2008, it's also a nice hypervisor OS on virtual world. How do you think? Installation is first step to experience the wonderful OS, you may see some strange problem during that step just like me. Today's topic occurred long time ago, just want to share with people who may face similar issue like me. That's HP blade system with local disk attached, you may see similar problem on other vendor. When you select disk to install OS, installer may says Windows can't be installed on drive 0 partition 1 , or Windows cannot be installed on this disk. This computer's hardware may not support booting to this disk. Ensure that the disk's controllers is enabled in the computer's BIOS menu . That's because boot volume is not set on array controller. For example by HP servers, you have to reboot and press F8 after BIOS checks array controller to enter array controller management interfac

About one month ago, I requested Google AdSense for my blog, I almost forgot that request due to the busy life. My friend Saju told me his IT blog has Google AdSense, that's reminded me I have a pending AdSense. It was blank after I set it up in my blog, Today morning it's finally show ADs...that's not a relative of money, it's just part of IT blog. lol Still in memory, my first Google AdSense check was 10 years ago, I still remember it's $200, my friend and me was so exciting when we known the check arrived China, that's first time I made USD, probably first time saw how USD looks like. :-) Google AdSense...it brought back memories, it's tough time for me in my life, but I still want to thanks my family, my friends and everyone who supported me. 时过境迁，那时候的事情在我的心里不再是仇恨和痛苦，这是我一生中的一小段经历、经验和做为一个男人应有的挫折。希望未来会更好。

VCE just released a new KB vce2563 to description the issue. If your ESXi 5.x hosts is connected on VMAX running Enginuity 5876.159.102 and later, you may see this particular issue after reboot ESXi host or attach storage if you enabled block delete feature of VAAI. To check the option status you can run following command on PowerCLI:  Get-VMHost -Location cluster name | Get-VMHostAdvancedConfiguration -Name VMFS3.EnableBlockDelete

Windows Server 2012, the biggest competitor of VMware vSphere. There are adequate reason to use Hyper-V 2012 instead of vSphere 5.x, but it's still very hard to for newbie, we spend more than 30 hours to try figure out how to create cluster on SCVMM 2012 SP1, the software is easy to install, but hard to configure. I saw "failed" everywhere, it's not a mature product in my view. We installed Windows Server 2012 data center edition on HP BL460, storage is NetApp FAS2240 (Maybe wrong, I'm not storage guy). We got following error message when we created Hyper-V Cluster on SCVMM2012 SP1. Error (2931) VMM is unable to complete the request. The connection to the VMM agent on the virtualization server (xxx) was lost. Unknown error (0x80338029) Recommended Action Ensure that the Windows Remote Management (WS-Management) service and the VMM agent are installed and running and that a firewall is not blocking HTTPS traffic. This can also happen due to DNS issues. Try and see