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Whatever you configure on MDS, whatever you configure on Cisco UCS FIs, whatever you do for port channel on both side, the Cisco UCS uplink ports always down with error message Initilize failed, or Error disabled. Congratulation! your device hit MDS firmware bug…https://tools.cisco.com/bugsearch/bug/CSCtr01652/?reffering_site=dumpcr.
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That’s a very small problem but it struggles you if you are enterprise datacenter administrator. As you may know the best practices to run application is by service account. But sometimes you may testing applications by your own domain account and forget remove it. Few days ago, my domain account locked out on domain controller.…
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I like automition/programming as much as I like Windows, my first offical training in University was VB, then I learned PHP and HTML after graduated. I can’t believe my first PHP program was welcomed in internel. But I stopped develop the skill. I got lot of special request for virtual environment. Some people want to monitor…
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I developed a script to take snapshot on VM and delete older snapshot regularly. I used variable $snapshots to receive data from Get-Snapshot command, then determine how many existing snapshots according to return of $snapshots.count. Somehow the script always ran incorrect behavior. When I deep looked into $snapshots, I found a interesting things. Computer A, $snapshots.count return nothing if no, or…
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You may read my post How to find which ESXi 5.1 host lock the VM, it’s a solution to figure out which host lock down a file. But sometimes you may face similar problem but different solution. You are able to browse the file by CLI or GUI, but cannot delete by either way. It returns…
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Just googled this issue, some of people got similar problem, following was my problem and solution, hope it’s useful for you. Virtual machine maybe lost on vCenter Server inventory for some reason, it’s also disappeared on ESXi inventory when you connect to the individual host directly. You are able to find the VM process by esxcli…
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It’s busy month, I haven’t update my blog since I back from Phuket with my wife. I’m running into multiple projects, a little overload. Just a quick share, my storage team ask me provide WWPN of all hosts to do a health check. it’s nightmare to pull out the data from vSphere client or web…
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To implement enterprise application like SAP, Oracle or SQL on UCS virtualization environment. Default setting of UCS blades may not suitable for the application. We always expect highest performance by optimize hardware and ESXi. In my UCS training session, I noticed one “hidden” parameter may helpful for performance. Receive Side Scaling – So called RSS,…
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Most company use HP, Cisco, IBM network adapter, most of their network adapter drivers include in ESXi 5.x images. But what if your network adapter is other vender? I’m going to show you how to identify and install proper drivers for 3rd party network adapter on ESXi 5.x. My ESX 4.0 server (HP DL380G7) was…
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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…