I recently had a chance to help a small business move their 70 mailboxes to the Exchange Online service. This company was running Windows 2008 with Exchange 2007 on premises installation and we helped them migrate to Office 365/Exchange Online over a couple weekends. During the migration we ran into…
A few weeks back I wanted to verify some path counts per LUN. This is typically pretty easy and something that can be written as a one liner using standard PowerCLI cmdlets as such: Get-VMHost | Get-ScsiLun | Get-ScsiLunPath However, the above command wouldn’t return results in the customer environment.…
I’ve been troubleshooting a specific problem where storage latency jumps very high during very short periods of time, usually in the late evening/very early morning hours. The latency is very bad, sometimes in the 2,000ms+ neighborhood. My storage guys see an extreme increase in IOPS coming from my ESXi hosts…
I recently needed to resize system partitions on several Windows 2008R2 virtual machines. To do this with Set-HardDisk the virtual machines must be powered off and you need a helper VM. I was looking for a way to do this without downtime, as that can be arranged when executing the…
I’ve been working on a little side project recently — reviewing a book for Packt Publishing. This process has given me a new respect for authors and the process behind writing a book. The book – vSphere High Performance Cookbook – has been published and you can check it out…