Vsphere

The number of clusters that should be used for a vSphere environment comes up for every vSphere design. The number of clusters that should be used isn’t a standard number and should be evaluated based on several factors. Number of Hosts Let’s start with the basics, if the design calls for more virtual machines than can fit into a single cluster, then it’s obvious that multiple clusters must be used. The same is true for a design that calls for more hosts that can fit into a single cluster or any other cluster maximums. ...

This is our first stop in our journey to install vRealize Automation 7 and all of it’s new features. This post starts with the setup of the environment and assumes that you’ve deployed a vRealize Automation appliance from an OVA and that you’ve also got a Windows Server deployed so that we can install the IAAS components on it. After you’ve deployed the vRA7 OVA, login to the appliance with the root login and password supplied during your OVA deployment. ...

During the process of setting up a new vCenter Server in my lab, I ran into an issue adding SSL Certificates to my vCenter services. I followed my own blog posts about how to do this so that I wouldn’t miss anything, but nevertheless ran into an error that took me quite a while to get fixed. After creating all my certificate requests using the VMware SSL Automation Tool, I updated my SSO with my custom certificate without issue. The next step is to make sure the Inventory Service trusts the new SSO Certificate, which also went without a hitch. ...

There are a few Linux commands that vSphere Administrators should know for basic troubleshooting purposes and I wanted to take a second to review them in case you’ve typically been a Windows Administrator (like me). First, traversing the Linux file system is pretty similar to going through Windows directories from the command line. change directories Windows : CD C:dirname Linux : cd /dirname Show files and folders Windows : dir ...

If you’ve been in a situation where you need to test connectivity, you’ve probably used the ping command. But what do you do when you’re trying to test connectivity from an ESXi host? Luckily there is a command called vmkping that will allow you to test from the host. The first thing that you need to do is to SSH into your ESXi host. Turn the SSH Service on from the Configuration –> Security Profile Tab. Then you can use your favorite ssh client and remote into your host. ...

High Availability is a great reason to virtualize your servers. It can help reduce downtime by automatically rebooting virtual machines in the case of a host failure. But, a relatively minor host issue should not cause the reboot of all of your virtual machines. This is where vCenter HA datastore heartbeats are useful. Let’s first look at a basic example of HA. Below is our normal environment with no failures. We have a few VMs on each host and the hosts are connected to a pair of datastores and a network switch. Now assume we have a host failure, we now need to have HA kick in and reboot the virtual machines on the failed host, over on the still working hosts. HA is working great and is a great feature, but lets take a look at what happens if the Management network were to fail. Without datastore heartbeats involved, the two hosts wouldn’t be able to communicate with each other over the network so the two of them would assume that the other was failed. But by looking at the example below we can see that even though the Management network is down, the virtual machines and their network is working just fine. This means that no outages are being noticed by end users so we DON’T want HA to kick in because the virtual machines will restart. ...

Good news for all of you eagerly awaiting the next iteration of the PernixData FVP software. Version 1.5 is now in Beta and you can request the download for your own testing from the following link http://info.pernixdata.com/Betaprogram. Disclosure: At the time of this writing I am a PernixPro which entitles me to early access to software, licenses or other merchandise. The thoughts expressed in this post are my own and have not been vetted by PernixData. ...

This is a Site Recovery Manager 5.5 Guide to help understand the design, installation, operation and architecture of setting up VMware SRM 5.5 SRM 5.5 Architecture SRM 5.5 Installation SRM 5.5 Site Configuration SRM 5.5 VM Replication Configuration SRM 5.5 Array Replication Configuration SRM 5.5 Virtual Appliance Replication SRM 5.5 Protection Groups SRM 5.5 Recovery Plans SRM 5.5 Bulk IP Customizations SRM 5.5 Test Recovery SRM 5.5 Recovery SRM Gotchas Official Documentation Links SRM 5.5 Release Notes SRM 5.5 Compatibility Matrix SRM 5.5 Documentation Center SRM Port Numbers SRM Product Page ...

I think the Olsen twins have been using FT longer than VMware has. Awesome! So you’ve got your brand new shiny VMware cluster all setup with HA and think, “Man, I’m in great shape now. Downtime is a thing of the past!”. Well, not so fast! VMware High Availability just means that if a physical host fails, the virtual machines can reboot on another host which LIMITS your downtime. What if your machines are so critical that you can’t have this reboot time in the case of a host failure? The answer might be VMware Fault Tolerance (FT). ...

If you’ve got a some hardware lying around for your lab, Windows Server 2012 may be a great solution for a home storage device. You can now do both block (iSCSI) and NAS (NFS) on the same server, as well as having an OS to install some management apps on it. In my lab, I use this management server to run Veeam for my backups, PRTG network monitor for bandwidth tracking, as well as using this server for both iSCSI targets and NFS mounts. ...