virtualguido

This blog article is about the I/O size or block sizes in virtualized environments. I am sure you came along this if you are dealing with d...

This blog article is about a very useful command master command with the name vmkvsitools which can retrieve specific information about the...

Lspci is a short name for list PCI (Peripheral Component Interconnect) devices. PCI is a standardised bus to attach different kinds of ha...

This blog article is about one of my most favourite topics with just two letters: I/O. Why? Because really everything around virtualizati...

This blog article is about how to find a particular driver and firmware of an I/O device like a HBA, Network card etc.! For VMware VSAN th...

This blog article is about how to kill a frozen VM. Working in technical support you often get cases where let’s name it: “something wen...

This blog article explains VMware ESXi claim rules in general and the differences between core and SATP (Storage Array Type Plugin...

This blog article describes the different SCSI controllers in VMware ESXi and why one eventually is better than another one. I had multiple...

For me it was a long time a myth how the I/O flow works in ESXi. For sure I knew what a Path Selection Policy (PSP) as well as the Storage...

To close this backup best practices series we end with the SAN Backup Mode. In SAN Backup Mode the storage device where the VMs actually is...

The third backup method in this series is vSphere Storage APIs for Data Protection (VADP). The Virtual Disk Development Kit (VDDK) is used ...

The second article describes the method NBD (Network Block Device) which uses some of the virtualization functionality. It is available in ...

The four different backups methods get explained in the following PernixData FVP Backup Best Practices series. We start with the first one ...

This blog article describes Write I/O with PernixData FVP in place. We separate between just read acceleration (Write-Through) and read ...

When a VM issues an I/O operation FVP determines how it can serve this I/O. In the case of a read I/O an early distinction depends on wheth...

Welcome to my first blog article ever. I wrote this a long time ago when thought I would like to start a blog but then it somehow never hap...