When Virtualization Breaks
Posts related to VMware vSphere
Hello 2020 and my fist technical post of the year. Use case: You have built a new vCenter from scratch and would like to move host from an existing vCenter server to this one. As a preparation for this migration you performed following steps 1 Created Network mapping of all VMs in the source vCenter server 2 Exported the Distributed switch configuration from the source vCenter server 3 Imported the Distributed switch configuration to the
VM Performance Demystified and Best Practices to Optimize (BCA2149BU) Link to video: https://videos.vmworld.com/global/2019/videoplayer/28519 Link to PDF: https://cms.vmworldonline.com/event_data/12/session_notes/BCA2149BU.pdf
Continue readingIntroduction: The organization’s data center suffered a power loss impacting multiple components and systems. Post the power restoration you are observing issues with in your SDDC platform like but not limited to below ESXi hosts keep dropping out of vCenter server Multiple VMFS datastores are inaccessible or facing performance issues Host reboots have been attempted The scale of the environment is making it difficult to isolate the hosts that need a reboot Solution: A quick
Continue readingIntroduction: As an administrator for a vSphere environment you may come across situation where you have a lot of VMs configured with unnecessary hardware like USB device, Floppy disk or a serial device. The presence of such devices can impact the efficiency of DRS leading to the imbalanced cluster. In a large-scale environment, it can be difficult to find and fix such VMs. The code below provides an ability to create a csv report for
Continue readingIntroduction: While working with ESXi 6.5 & 6.7 I noticed that there is no UI option available to provision a domain user. The PowerCLI cmdlet New-VIPermission also fails to query and add permission for domain user. The only option to achieve this is using SSH session to the host. The command that can be used on the SSH console to achieve this is Syntax: Sample command: This can be a night mare for a large-scale
Continue readingIntroduction: When you choose Slot policy, the failover capacity is ensured using a Slot based approach. In vSphere release 6.5 and above you may choose a fixed slot size as well What is a Slot and Slot Size ? If we assume an ESXi to be a car parking lot, A Slot is a space where a VM (VM is the car here) can parked and Slot Size is the dimension of individual parking spot.
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