English version of my posts.
If you are still using Windows 2008 for vCenter Server. You may see ESXi hosts lost connection back and forth on vCenter Server after recent Windows pathing. It’s not something like a heartbeat lost for a few seconds. ESXi can takes minutes to back online. You can see similar logs in vpxd.log: 2018-08-03T09:24:23.337-04:00 error vpxd[20160] … Read more
Disk Interface IDE (ATA): Bandwidth is 133 Mbps. IOPS is ~100. The interface can connect maximum 2 disks. SCSI: IOPS is ~ 150. It can connects 8 or 16 disks Ultrascsi320 – 320 MB/s Ultrascsi640 – 640 MB/s SATA: Bandwidth is 6 Gbps. IOPS is ~150. It can connects to 8 or 16 disks. SAS: … Read more
Sometimes you may see vROPs web UI hang, keep on “Loading”, or no responding to any click. It because you are using vRealize Operations Manager 6.6 or earlier version, and your computer is touch screen. There are two ways to fix that: Disable touch screen hardware in Device Manager. The device name usually is “HID-compliant touch … Read more
Regular Expression also calls Regexp. There are two classes regular expressions: Basic Regexp (BRE) and Extended Regexp (ERE). Regexp should be put in double quotation marks. It can be categorized to: Strings . – Can be any character. Sample: #cat /etc/fstab | grep “U..D” It returns the lines contains U, D and whatever 2 characters between its. … Read more
When you install vSphere Client 5.x on Windows 10 computer. You may see “Enable .net 3.5 failed” message. And when you try to enable .Net 3.5 on Windows 10 manually, it shows error code 0x800f081f. This issue occures on internet blocked or policy restricted computer. The only way to avoid that is use command line … Read more
Older UCS Manager uses Java application. The UI fonts could be extremely small on high DPI screen. The fix is: Go to “C:Program Files (x86)Javajre1.8.0_171bin“. Go to “Properties” of “jp2launcher.exe“. “Compatibility” tab -> “Change high DPI settings“. Check “Override high DPI scaling behavior….“. Select “System (Enhanced)” or “System“.
There are a lot of articles introduce how to deploy vCenter Server virtual appliance on VMware Workstation. I tried but somehow it’s failed. Following are some notes for your reference if you want to deploy vCenter Server virtual appliance on VMware Workstation real quick. I assume you don’t have DNS or domain servers. Native DHCP … Read more
There are several layers of networking on the virtualization infrastructure. Guest operating system, Virtual Machine, ESXi driver, physical network adapters, RJ45/SFP and network switches…etc. Sometimes it’s hard to say where exactly caused a problem. Especially hardware layer problems. Today I worked on a very interesting case, it may give some ideas to troubleshooting network performance … Read more
Just a quick notes. If you use multiple monitors, some are 4K and some are regular resolution, you may see window display issue when move Internet Explorer between these monitors. Follow the KB below to change register to allow Internet Explorer 11 accommodates the monitor solutions. Internet Explorer 11 window display changes between a built-in … Read more
When you upgrade or patch vCenter Server 6.0 for Windows, you may see following symptoms: “The older version of cis-upgrade-runner cannot be removed. Contact your technical support group.” Or error code 1063: “Installation of component VMware CIS upgrade runner failed with error code ‘1063’” That means the vCenter Server installer cannot find MSI files of … Read more
