Posts under ‘VMware’

Hi, I recently upgraded my VirtualCenter server to 4.0.1 running on 2008 R2. I’m very happy with it, except the old way of running scheduled powershell tasks in 2003, no longer works. This is my script to delete all snapshots older than 7 days: Add-PSSnapin VMware.VimAutomation.Core Connect-VIServer VCservername -User UserName -Password Password Get-VM | Get-Snapshot [...]

Recently, a customer of mine decided that it’s time to upgrade to vCenter 4.1. So he took a backup of the database and blew away the 32-bit Windows server. He then installed Windows 2008 R2, SQL Server Express 2008 R2 with Advanced Services and imported the DB back in – created a 64-bit DSN, and [...]

Hi, We have close to 50 LUNs presented to 40 hosts at a client site. We also need to perform maintenance which will cause downtime on our core FC switch. This means there will be a massive failover and potential path thrashing due to lack of path balance on all VM hosts at once. Here’s [...]

Just to let you know, my VCDX application has been accepted – I’m defending my mammoth design in Melbourne on the 6th of July… Wish me luck…

Before we commence this blog post, do a few things to see if this issue affects you: 1. Check what processors you have in your ESX server – if you have the 55xx series of Xeon processors, whether they are L, E or X variants, you may be affected. Some AMD servers are also affected [...]

Hi, Just a quick piece of advice regarding Dell R610s and Dell R910s in vSphere – when setting up the BIOS of the server, make sure to leave Node Interleaving disabled. This messes with ESX’s own NUMA settings (Configuration -> Advanced Settings -> Numa) and significantly reduces the speed of the ESX server. Reference Cheers, [...]

I had meant to post this sooner than now but unfortunately work is keeping me occupied 28×7 (that’s not a typo!) This is a partial update to this post Attila seems to be a scripting whiz and he’s made a change to my dd script to not utilize bc and added better tunable parameters – [...]

Just to let committed blog readers know, I’ve just passed the first stage of the VCDX exam. I’ve also passed my VCP on vSphere. Do not go into the VCDX unprepared – your arse will be handed back to you on a platter. It is not an easy exam Anyone who is a VCP on [...]

First of all, apologies for not posting for a very long time. I’ve been busy setting up my Cloud Computing service. I’ll write about that some other time. For now, I have some recent experiences to share with vCenter: vCenter 4.0 works on Windows 2008 R2 but the vSphere client does not unless a workaround [...]