Lately I’m moving around my VMs and storage luns between my ESX clusters a lot to accomplish a complete redesign of my Virtual Infrastructure. At some point I got lost and didn’t had the complete overview anymore. Which luns were attached to which cluster? To remove(unpresent) a lun from an ESX host/cluster on the storage [...]
Posts Tagged ‘ESX’
Reconnect ESX hosts using PowerShell
This week I ran into problems with vCenter server and almost all of my VMs were orphaned in vCenter. To resolve this issue I needed to disconnect/connect each ESX host. Because I hate doing repetitive tasks I created a little PowerShell script that I wanted to share with you.
# Variables
$VCServer = “vcserver.yourdomain.local”
$password = “rootPassword”
#Connect to [...]
Installing ESX 4.0 on VMware Fusion
If you love VMware you have to love Apple and if you love ESX4.0 you have to love a Mac. Well, at least I know I do. Both companies are light years ahead of their competitors and characterized by superior design, excellent performance and both fighting Microsoft’s marketing machine.
Since I’m a great Mac fan and [...]
ESX Memory Management – Part 3
In part 1, I explained the virtual machine settings that are available to us regarding to memory, in part 2, I explained how the ESX kernel assigns memory to a VM and in this part I will dive into ESX memory reclaiming techniques.
The ESX kernel uses transparent page sharing, ballooning and swapping to reclaim memory. [...]
ESX Memory Management – Part 2
In part 1, I explained the virtual machine memory settings that are available to us. This caused quite some controversy on what would happen when a limit is hit that’s configured lower than the actual allocated memory.
Scott Herold did an excellent follow-up on this. Be sure to read his article too, because it contains valuable [...]
ESX Memory Management – Part 1
I receive a lot of questions lately about ESX memory management. Things that are very obvious to me seem to be not so obvious at all for some other people. So I’ll try to explain these things from my point of view.
First let’s have a look at the virtual machine settings available to us. On [...]
Ken Cline’s Great vSwitch Debate
Probably old information for insiders, but Ken Cline recently finished his trilogy on “The Great vSwitch Debate”. In his vSwitch trilogy he addresses everything you allways wanted to know but were afraid to ask about vSwitches. In part 1 of his series he introduces the concept of a vSwitch, in part 2 he talkes about the security [...]
VMware ESX(i) 3.5 Update4 released
VMware has released ESX(i) 3.5 update4.
Do not forget to read the release notes here or you can go to the download page here
While going through the release notes these things caught my attention:
vCenter 2.5 U2 or higher is required before upgrading to ESX(i) 3.5 U4 according to the Compatibility Matrix
If you are in a managed (enterprise) [...]
HOW-TO: Recover from failed Storage VMotion
A while ago I received a request from the storage department to move a whole ESX cluster to another storage I/O-Group. This would be a disruptive action.
I was wondering if storage VMotion would help me out here if they assigned me some new storage on the other I/O-Group instead of moving the current LUNs.
If you [...]
Virtualization links for this week
I’ve been really busy this week
patching my ESX hosts
troubleshooting ballooning problems
moving ESX hosts to other SAN switches
troubleshooting network/vlan problems
putting some effort in helping people out on the VMTN forum. Hey, I even got a top 5 ranking this week
AND reading all those magnificent articles I found out this week
Whenever you are seriously interested in VMware [...]
