vCenter position
Hello,today we decided to switch to HA, then double servers and vcenter for control.I doubt, the vcenter appliance is better to keep it inside a host that will be driven by vcenter itself or is it...
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HA/FT without external storage
Hello guys,I have a question, I have 2 hosts with disks. If I wanted to make a cluster using those datastores.Can I make one of the two be the master and the slave copy the machines into its internal...
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vSphere HA failover fails due to unsufficent resources, but they actually are...
Hi everyone I installed ESXi 6.7 on a server and I nested 4 other ESXi hosts on top of it.The hosts are: Host1 : with a windows server vm in itHost2: used to handle failoverHost3: used to handle...
View ArticlevSphere HA failover works bad on shared NFS storage
I have installed ESXi on a host and on-top of it I have installed a Windows Server with NFS server enabled and 2 nested ESXi hosts that share the NFS storage.In the NFS storage I have memorized files...
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VM HA status permanently red with a vSphere HA virtual machine monitoring error
Hi all, I have two VMs that have a recurring vSphere HA virtual machine monitoring error. It is recurring because as I reset it to green it turns back again to red. I have the following recurring...
View ArticlevSAN strecthed cluster and SRM
Hi We are using vSAN stretched cluster. Strat to look at SRM as site reocvery orchsteration motor. Does SRM requires 2 vCenters ?
View ArticleESXi 6.5U3 host subject to failure, VMs crashed but host not declared dead by HA
Hello Community, I'm troubleshooting a failure we had with one of our ESXi 6.5U3 hosts. I don't know yet what exactly caused the host to fail, most likely a hardware issue or driver/firmware related...
View ArticleHow to calculate available resource for VM provision
Hi, Could someone please help to understand how to calculate the memory that are free to use on VM commision in a cluster by considering the HA reserved failover percentage.
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VCA HA why do we use it over simpler HA/FT for VCA?
Hi everyone,VCA HA requires Witness VM, Cloned passive VM to be created to provide VCA redundancy. But we can provide the same functionality using simple HA for VM hosting VCA. For example, we can...
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i config HA 2 active 1 fail host i want to know resource can overcommit %
i have host esxi 3 host make 1 cluster i created disk HDD vSAN RAID 1 . i config HA 2 active 1 fail host i want to know resource can overcommit % ?
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VMWare Fault Tolerance
I have a question about VMWare Fault Tolerance feature. We are downgrading some SQL VM's and still need HA. Could I use the VMWare FT to make a active passive SQL solution or would I need to use SQL...
View ArticlePerformance Issue on FT Enabled VM.
Hi All, I am facing CPU spike issue after enabling FT for the VM.After enabling FT . Java exe start spiking on the VM.Without FT enable VM works fine. Only after enabling FT Java Exe start taking 100%...
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VSphere FT: problem with ".ft-generation", "ft.lockFile" and "configFile"
Hi everyone, I have a problem with the power on of a vm. The power-on task fails with the message: Failed - Module 'FTCpt' power on failed.In the vmware.log file of the vm I have this:...
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V Center Fault Tolerance Scenario
Hi every one,I am trying to understand FT, please consider following examples: Example#1We have a cluster with three ESXi1, ESXi2, ESXi3 with FT enabled. VM1 is on ESXi1 and Cloned VM1 ( created by...
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vSphere FT slows down primary copy
Hello everyone, I want to make fault tolerant a vm with windows server. When I turn the FT on from the vCSA, the performances start get so bad that I cannot use the vm GUI anymore. I have 2 ESXi 6.7...
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Software ISCSI adapter on ESXi
Hi everyone,Trying to learn ISCSI on ESXI. My lab set up:ESxi-2 vmk0--172.20.10.52-vSW-VMNIC0----------- 172.20.10.10 STORAGE ISCSI TARGET-LUNS vmk1--172.20.11.52-VSW-VMNIC1-----------...
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Permanent Device loss and All paths down impact on VM
Hi everyone,I am reading about PDL/APD as described by this link :VMware Knowledge Base I understand the difference between PDL and APD and the reasons these could happen. However, I am trying to...
View ArticleVM ware Fault Tolerance question
Hi everyone,Please consider the following set up:VM1( Primary)--EXSI1--VMK1-(FT Logging)---VMK1-ESXI2-VM1 (SEC) Above:Both ESXI1/ESXI2 are part of a cluster.This Cluster has HA enabled ( only Host...
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VM CPU utilization
Hi everyone,Please consider the following example:VM1- --ESXi_1Above ESXi-1 has single VM1. ESXi-1 has following CPU resource: We assign VM1 single CPU: Based on the above, what is max CPU resources...
View ArticleWindows Server Licensing in vSphere Fault Tolerance
Hi, Is there someone to explain me how is managed Windows Server Licensing in vSphere Fault Tolerance scenario? Greetings, Gilles
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