baber
Expert
Expert

HA not work on some of my machines

Hi

I have two esxi host i have installed on both of them esxi 5.5 u2 i am doing test i have created 3 vms but just ha work on 1vms when i turn off host that contain 1 vm it will be migrate to other host but when i turn off second host which has contain 2 vms not to do second host and 2vms will be shutdown and HA not work  and  when i select vms that is ok and choose map tab this icon appear host vmotion icon .

for second host  when i select each of 2 other vms and choose map tab this icon show host that is not compatible for migration with VMotion i have vss and dvs on vss for each host has 2 nics and select vmotion  and all of my virtual machines use from vds now i am confused what is my problem?

Best regards

Babak

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9 Replies
bhards4
Hot Shot
Hot Shot

Hi Babak,

There could be many reason for which HA feature not working for second host on which there are 2 VMS

1) Pls verify if HA is configured properly on 2nd ESXi host, if not reconfigure it again.

2) Check if the CPU compatabilty is same for second ESxi host with thie 1st ESXi

3) Need to check if there is adéquate ressources available on second host on the 2nd host.

4) Pls verify if second host having same shared storage as 1st host having.

5) Also verify if you have not set any Affinity/Anti-Afinity rules of those VM, hope that not been configured from your end.

6) As you said you have configured vds into your VC, verify if they if the second host network configuration is set correct

Regards,

Sachin

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baber
Expert
Expert

So thanks

i have a question

1- can i use HA on esxi local disk or it is necessary to have shared storage?

2 - All of my vms have to put on same shared storage?

Best regards

Babak

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smithar
Enthusiast
Enthusiast

Yes. Please see vSphere HA Checklist

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bhards4
Hot Shot
Hot Shot

1- can i use HA on esxi local disk or it is necessary to have shared storage?

Ans: Yes, its necessary to have shared storage

2 - All of my vms have to put on same shared storage?

Ans:Yes, you need to have that

Regards,

Sachin Bhardwaj..


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vThinkBeyondVM
VMware Employee
VMware Employee

baber wrote:

So thanks

i have a question

1- can i use HA on esxi local disk or it is necessary to have shared storage?

>>Yes . It is required. Reason is, when there is host failure, VMs on failed host need to be restarted on available hosts in the cluster. Available host should see the VM files in order to restart the VMs, VM files will be only visible to available hosts if there is SHARED storage.

2 - All of my vms have to put on same shared storage?

>>>Yes, same reason as above.

Please  note that when host fails, vMotion(Migrate) does not come in picture. HA will un-register the VMs and re-register on available host in the cluster.  vMotion is primarily leveraged by DRS.

If it is useful, plz mark answer as correct or helpful. ---------------------------------------------------------------- Thanks & Regards Vikas, VCP50, MCTS on AD, SCJP6.0. http://vThinkBeyondVM.com ----------------------------------------------------------------- Disclaimer: Any views or opinions expressed here are strictly my own. I am solely responsible for all content published here. Content published here is not read, reviewed or approved in advance by VMware and does not necessarily represent or reflect the views or opinions of VMware.
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baber
Expert
Expert

thanks

All of my vms are on same shared storage but on different luns but HA not work for one of my host i am confused what to do ?

is this ok  for network ?

i use vss with 2 nics and active vmotion and management traffic on that and use dvs just for vms

Best regards

Babak

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bhards4
Hot Shot
Hot Shot

1) All of my vms are on same shared storage but on different luns but HA not work for one of my host i am confused what to do ?

Ans: Pls verify if they have shared storage visible to both the Hosts.

2) i use vss with 2 nics and active vmotion and management traffic on that and use dvs just for vms

Ans: Thats fine..

Regards,

Sachin Bhardwaj

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baber
Expert
Expert

can use standard switch for HA or it is necessary to have DVS for networking ?

Best regards

Babak

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bhards4
Hot Shot
Hot Shot

Its not necessary to migrate all vSwitch or ports to be migrated on DVS

You can keep management vSwitch as VSS, no worries into that.

Regards,

Sachin Bhardwaj

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