FT Testing
I just enabled fault tolerance on one of my servers, I had to format the drives to Thick eager and change the CPU/MMU to Intel VT-x for MMU but after that it turned on successfully When I tried testing...
View ArticleWhat happens to a VM when the sole uplink port on a vSwitch goes down?
Hi all, I have a question regarding HA of a VM when it's network is lost on the host it is running on. In this scenario there is a 3 node ESXi 5.1 cluster. Each host has a vSwitch with a single uplink...
View ArticleHA test: some VMs are disconnected
Hi, I ran a test to check HA on my 2 hosts cluster by powering off one of the hosts.Some VMs got restarted on the second host but 5 of them are now shown up and disconnected on the failed host :-(The...
View ArticlevCenter Disconnects from Master HA Agent
After a recent vCenter migration we are seeing the following events in our cluster taks & events: vCenter Server is connected to a master HA agent running on host ...vCenter Server is disconnected...
View ArticleAfter HA Event, VM's are shutdown
We have been experiencing an ongoing issue where VM's are not migrated to a new host during an HA event. Here are our current cluster settings: Admission Control is set to DisableVM restart priority is...
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vSphere Application Monitor GuestSDK with kdump
Hi, I'm trying to run vSphere Application Monitor GuestSDK with kdump.It seems that "das.iostatsInterval" parameter (default value=120s) doesn't work well in this case.If "das.iostatsInterval" is...
View ArticleIs FT for multi vCPUs coming soon?
Is anyone aware if VMware plans to support multi vCPU FT in the coming future? (vSphere 5.5?, if so what is the release date?) If not, does anyone know of a software plugin that can be used to...
View ArticleChecking Ha DRS enabled
How do we check that HA DRS configuration is enabled ? I am looking for some sought of file where this information is available.
View ArticleWhen is event 'VM restarted on alternate host' generated?
I am trying to setup an alarm which would be triggered when event 'VM restarted on alternate host' is generated. My expectation is that this event would occur when a VM is failed over to the alternate...
View ArticleConfiguring HA help
Hello,I'm relatively new to VMware but hoping that someone can help me or point me in the right direction for the information i need to assist with configuring HA for selected VMs. In our current setup...
View ArticleWhy VMs do not auto power on when shutdown Esxi 5.5 by Console (F2) in HA...
Dear all . - I have problem when testing in Vcenter HA . Details1. When shutdown Esxi by Vcenter . The Vms machine auto move to another host and can auto turn on . 2. But when shutdown Esxi by login to...
View ArticleFT not working due to CPU compatibility and EVC mode
Hi guys, 1) can you explain me why FT doesn't work? even if I have running EVC mode. I thought, EVC ensure CPU compatibility for FT. I have two servers with NFS and vSphere 55 in my lab. One server...
View ArticleAnti-Affinity Rules with vSphere 5.1
We are researching the ability to use Anti-Affinity rules to ensure the same Host is not running VM's running a N+1 pair of the same applications, we found some contradicting references (VMware KB:...
View ArticleThe vSphere HA availability of this host has changed to Unreachable
We recently deployed a new vSphere 5.0 U1 HA-enabled cluster. I noticed that a couple of times on an otherwise healthy cluster, after taking a host out of maintenance mode, the last HA event for the...
View ArticleStorage DRS - can it be used for fault tolerant storage?
I am using vSphere 5 and have implemented HA and vMotion on a two-node test cluster comprised of Dual-Xeon blades. On one of these blades (Blade A), I have a VM configured as a virtual storage node...
View ArticleFault Tolerance with Multiple NICs
Apologize if this has been asked before. I am setting up a vSphere 5.5 environment and I have enough 1GB NICs per host to dedicate two NICs per host for Fault Tolerance. I was wondering the best way...
View ArticleWhat scenarios are you/customers setting the VM restart priority to "Disabled"?
The HA dev team would like to better understand why customers are using VM restart priority of "disabled". Some specific questions:In what scenarios are you/customers setting the VM restart priority...
View Articleconfigured failover capacity n/a
Hello, My HA cluster setup don't seem to work.Failover of the VM's is not working. I noticed "configured failover capacity n/a" on the summary tab of the cluster. I been searching across the internet...
View ArticlePotential failover solutions
Hi,fairly new to VMware, so bare with me... Hope this is the right forum... We have a site remote from the main datacentres, it has one host (ESXi 5.5) with 3 VMs. Will call this site H. One of the...
View Articlegetting vSphere HA errors please help
We have 4 ESXi hostsI have ensured that they can all ping each other successfully using vSwitch0 (which purpose is the MGMT + vMotion) I am seeing the following errors: "The vSphere HA agent on this...
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