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It’s about 5 years since last time I visited Chengdu. A beautiful city, people say “you gonna love it, and wanna live there if you come to Chengdu”. People looks like live very relax in Chengdu, they drink tea in park, play Mahjong and enjoy professional people scrape their ears (most like ears massage). I…
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Storage is critical component for virtualization, lot of VM performance issue is related to storage latency. You may see similar error message on vmkernel log for some case: 2014-02-11T07:18:20.541Z cpu8:425351)ScsiDeviceIO: 2331: Cmd(0x4124425bc700) 0x2a, CmdSN 0xd5 from world 602789 to dev “naa.514f0c5c11a00025” failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x4 0x44 0x0 It much like language…
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Hi there, I built a new personal website, hence I’ll stop update here. Please go my Wu’s Blog to get latest articles.
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I didn’t know ICANN request email address verification, I thought freedom everywhere outside China, but looks like it’s not. 🙂 My domain was suspended due to that ICANN policy, and my QQ mailbox unable to recieve verification email from ICANN, what a unfreedom country it is! Finally I have to change my domain register mailbox…
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If you have set of group VMs and particular group can access each set VMs, you should grant access on vSphere Client or vSphere Web Client. SSO is slowly sometimes, you could use following CLI to do it more efficient. New-VIPermission -Entity “Folder Name” -Principal “Domaingroup name” -Role “Role name” You could do it faster…
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Your vHBAs or other PCI devices may stop running in ESXi 5.x when using Interrupt Remapping feature. This issue only impact to UCS blade BIOS version 1.4(3c), it has been fixed on 1.4(3j). Please refer to http://kb.vmware.com/kb/1030265 to see how to disable Interrupt Remapping feature in ESXi 5.x Also refer to https://tools.cisco.com/bugsearch/bug/CSCty96722.
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Serials console is very helpful to troubleshooting Linux problem, you can see additional system message via serial console if your Linux server hung. It is essential component on physical server for troubleshooting. It’s challenge to manage serial consoles if your datacenter is very big. You may deploy console server for central management of serial consoles,…
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My wifi router was purchased one years ago, for some reason it’s not stable now, sometimes lost package when I ping it. After chat with my friends Steven, he recommended Cisco Linksys WRT54G2 which he is using, a very stable router. You can install DD-WRT firmware and leverage more new free feature, such as NFS,…
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Your HP server may runs fine on ESXi 4.x or 5.0, but you may get error message No NIC found with MAC address xx:xx:xx:xx:xx:xx after upgrade to ESXi 5.1 or later. That’s caused by network adapter firmware, you have to upgrade server network adapter firmware by HP SPP 2013.02 or later. I would recommend you…
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NetApp Virtual Storage Console is my favorite to manage and backup data on NetApp attached ESXi host, there is lot of benefits to secure VM data more efficient. The installation is pretty simple, and very less resource it requires, you can even install it on a multi-role virtual machine. But the first headache maybe the…