configuring VMware HA Problems and how to resolve them

look at the status of each host in a virtualized environment today, and in the process of viewing, you'll see that almost every host has a warning:
vSphere ha Heartbeat data storage number is 1, less than required: 2


This problem Baidu saw a lot of blog post reprint is a warning to close the practice, I feel a little bit, first of all, this question is nothing to us understand only said the practice, then encounter such problems in the future, we can only use the same approach to solve different problems, this is appropriate? I think it is inappropriate, and then I went to find the relevant English information to see the next. At the end there is a share.


Look closely at the discovery of VMware's KS inside there is this problem website as follows
http://kb.vmware.com/selfservice/microsites/search.dolanguage=en_US&cmd=displayKC&externalId= 2004739
why it's produced:
after the ESXi5.0, an additionalDataStore HeartBeat (data storage detection)function, this feature requires at least two shared storage to function properly.

Official display:

Starting with Vsphere 5.0, vsphere HA needs to share at least two shared data stores across all hosts in the cluster to properly run the data store heartbeat.

Which means das.heartbeatdsperhost, which is used to change the required number of heartbeat data stores. The valid value is 2-5, and the default is 2.

Das.ignoreinsufficienthbdatastoreUsed to disable the creation of configuration issues if the host does not have sufficient vSphere HA heartbeat data stores. The default value is false.

because I'm just using a shared storage. "thenumber of VSphere ha heartbeat data stores is 1, less than the required number of 2" This problem.

Workaround :

first: BR style= "Font-family:helvetica, Arial, Sans-serif;font-size:14px;white-space:normal;" > 1, select ha-configuration-vsphere ha-advanced options.
Second type:

Add another LUN so that all ESX hosts can access the LUN.
This is a formal solution.
If you are using Vsan, see the note below .

Here are some of the more information I looked at to explain this problem. Everyone is interested to see.
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId= 2004739
http://www.tuicool.com/articles/AZfUV3
http://windowsitpro.com/virtualization/ Q-how-must-vmware-vsphere-datastores-be-configured-best-support-heartbeat-datastores
Note: Virtual SAN datastore cannot be used for data storage heartbeat. Therefore, you cannot use any heartbeat data store if all hosts in the cluster are unable to access other shared storage. However, if you have storage that can be accessed through an alternate network path that is independent of the Virtual SAN network, you can use it to set up the heartbeat data store.

data store heartbeat)

When a preferred host in a vSphere HA cluster cannot communicate with a subordinate host through the management network, the preferred host uses the data store heartbeat to determine whether the subordinate host is faulted, is in a network partition, or is isolated from the network. If the secondary host has stopped the data store heartbeat, the dependent host is considered to be faulty and its virtual machine has been restarted elsewhere.
VCenter Server selects a set of preferred data save sets for heartbeat. This option maximizes the number of hosts that have access to the heartbeat data store and minimizes the likelihood that the data store will be supported by the same LUN or server for NFS.
You can use the advanced properties das.heartbeatdsperhost to change the number of heartbeat data stores that VCenter Server chooses for each host. The default value is 2, and the maximum valid value is 5.
VSphere HA creates a directory in the root directory for each datastore that is used for data store heartbeats and preserves protected virtual machine sets, and the directory name is. vsphere-ha.
This problem can occur if the data store heartbeat redundancy is not allowed in the shared storage. Starting with Vsphere 5.0, vsphere HA needs to share at least two shared data stores across all hosts in the cluster to properly run the data store heartbeat.

This article is from "Zhang Fan-it's fantasy drifting" blog, please be sure to keep this source http://chawan.blog.51cto.com/9179874/1582162

Configuring VMware HA Problems and how to resolve them