HA Heartbeat Datastores
One of our admins temporarily wigged out the system by removing some old datastores from the SAN without first removing them through the vcenter. 2 of the 4 hosts in that cluster became unmanageable....
View ArticleBlade chassis failure, how frequently do they happen?
We are looking at the Dell M1000e for our next gen infrastructure, I was wondering if any one would be willing to share their experiences with chassis failures. How frequently have you seen them? If...
View Article32 Max HA events, what then?
In the maximums guide for 5.1 it states that max concurrent host HA failover events are 32. http://www.vmware.com/pdf/vsphere5/r51/vsphere-51-configuration-maximums.pdf My question is what happens if...
View ArticleDoes HA do FDM on 4.1 on a 5.1 vcenter?
Hey Guys, If I add a 4.1 host to a 5.1 vcenter - does HA still use the AAM or does it switch over to use the FDM Master/Slave? Please advise. ThanksRJ
View ArticleLinked Mode resilience
HI, I am looking to join 2 vCenters using 'Linked Mode' (they are ESX4.1). My question is around resiliency - what options are available if, for example, the Main vCenter failed due to a power failure.
View ArticleClik here to view.
Migration of hosts from vcenter - HA question
Hey Guys, Now I know beyond doubt that HA will work when vcenter is offline. However what about when I am migrating it to a new vcenter. I am moving a cluster from vcenter 4.1 to vCenter 5.1. Now this...
View ArticleHA Agent fails on multiple hosts when putting one host in maintenance mode
I have a 13-host HA/DRS cluster, all hosts running ESXi 4.1. I put one host in maintenance mode this afternoon, and once it migrated all the VM's, disabled its HA agent, and entered maintenance mode,...
View ArticleHA Communication difference
Hi All - I have small clarifications in HA topic, In the vSphere 4.1 , If HA(aam) agent wants to talk to hostd using a translator via VPXA in earlier version. In the vSphere 5.1, FDM agent will talk...
View ArticleAfter upgrade to ESXi 5 HA errors
Hello, I recently upgraded the servers to ESXi 5 and am now receiving HA errors. This seems to primarily happen when I put a host into maintenance mode. I get either: Vsphere ha detected that this...
View ArticleSlots Query !
Total Slots in a Cluster - 108Used Slots - 339Available Slots - 0Failover Slots - 0Total Host - 18Powered on VM -339 With this configuration will the VM restart if any of the host in the cluster goes...
View ArticleSVMmotion
After i UNMOUNT a datastore "system" automatically initiates a "RE-SCAN VMFS" activity. If i have to UNMOUNT multiple datastore than i have to wait till this "RE-SCAN VMFS" is completed. Is there any...
View ArticleHA heartbeat datastore problem after cluster shutdown
I have a case with small 2 hosts cluster and VNXe. These had to be shutdown because power maintenance work which caused (planned) ~6hrs blackout in power distribution. After blackout everything came up...
View ArticlevCenter High Availability HA
Hi, I am trying to understand how does someone know whether there is enough resources for HA capability. I know that HA can fail if there is no memory and CPU resources but just wondering how is this...
View ArticleBest way to determine which Virtual Machines failed over from HA
I've run into several situations where a host from my cluster has failed and HA has kicked in, causing my Virtuals to restart on another Host. Users within my company are wondering if there machines...
View ArticlevSphere HA virtual machine error
Dear All, I have a cluster with 3 ESXi hosst. I have for only one VM a vsphere HA virtual machine error followed by vsphere HA virtual machine action alarm. Could you please help me to fix this error?...
View ArticleHA Admission Control question
Hello, I would like to know what will happen if Admission Control isn't activated in HA configuration on a cluster. If a host is going down, will HA restart VMs until the all other members of the...
View ArticleWhat is the recommended HA isolation response to use for VMs?
I just wanted to verify with others here after speaking with VMware support. We are in the process of upgrading our ESXi 4.0 and 4.1 hosts to ESXi 5.1. We have one cluster of ESXi hosts (3 hosts) that...
View ArticleHA disconnected VM network?
Over the weekend, we had a serious power-related problem in our data center, which caused a few of our ESX servers to shut down. Fortunately, HA kicked in and brought all those VM's over to the...
View ArticleClik here to view.
Help - HA not working
Hi All, please help me. I have problem with HA not working. I don't why it was not working.1 from 10 esxi goes down (problem with emulex card, but have redundancy), but vm not even restart and move to...
View ArticleWhich EVC mode need for cluster with Intel E5645 and E5-2630
Hi All,We have one HA cluster with four identical nodes with the following configuration.Model=Fujitsu-Primergy RX200 S6CPU=Intel Xeon E5645 @ 2.40GHz Now, we need to add one host with CPU of Intel...
View Article