In this post, I want to briefly describe three types of caches: write-through, write-back, and write-around. The cache is semiconductor memory where data is placed temporarily to reduce the time required to service I/O requests from the host. Write operations with cache provide performance advantages over writing directly to disks. A write operation with cache is implemented in three ways which have […]
After I had to restart vCenter for some reason, this server failed to boot properly and went into the Emergency Mode. The appliance fails to start and reports the following message: To find out the root cause of this error, open the vCenter Console and scroll up (Shift + Page Up) the screen to see the first error. As you […]
While resting at home, a friend contacted me and said he was looking for hardware information from his servers because he was going to increase the amount of RAM and upgrade the server’s memory to higher size and asked me to help him in order to find the memory information such as empty slot and part number. Their servers are […]
After I replace my new VCSA certificate with embedded PSC, I see the disconnected status in the NSX Manager dashboard in the Lookup Service section. When I try to configure Lookup Service in the NSX Manager I got the following error and after googling I find this KB, as in this KB mentioned, I check the port again but everything […]
Today I was replacing VMCA certificates by an ADCS (Active Directory Certificate Service) signed certificate, which everything went well except when I imported my certificate, the procedure stuck at 85 percent and rollbacked. and show you an error with this title. Status : 85% Completed [starting services…]Error while replacing Machine SSL Cert, please see /var/log/vmware/vmcad/certificate-manager.log for more information. When you […]
One of the common problems in software-defined datacenters is the latency of the virtual machine disk which will slow down the application and increase response time. The virtual machine owner or user declares that its system is slow and the question arises whether the slowdown is coming from a virtual infrastructure or storage device or operating system and how to […]
3 versions of the VMFS file system have been released by VMware for ESXi hosts which include VMFS3, VMFS5, and VMFS6. To fully understand the differences between these VMFS versions check this link.Today, after the successful installation of ESXi 6.7 on HP DL380 G9 in one organization, we have decided to update their datastores from version 5 to 6. So […]
Currently, I’m working with a customer who was wanting to add new VMkernel to their ESXi hosts and the number of ESXi hosts is about 50. Doing this task by vSphere Web Client was a bit time consuming and it is worth to write a script to this task automatically in a few seconds.While I was working on scripting I […]
The installation is done completely through PowerShell itself using the PowerShell Gallery via PowerShellGet. To install the PowerCLI 11, you just need to open the PowerShell with administrative privilege and type the following command to run the installation. Install-Module -Name VMware.PowerCLI -RequiredVersion 11.1.0.11289667 -Scope AllUsers PowerCLI will automatically be installed for all users. If you want to limit the installation to […]
In this post, we are about configuring the Connection Server so that it can create pools of VDI desktops. We use the Horizon Administrator UI to perform these Connection Server configuration tasks. Before we create a desktop pool we must have the following parameters configured: Horizon 7 license vCenter Server user account – See Horizon View 7 – Prepare Active Directory […]
