vmware KB 2014323 PowerCLI to set qla2xxx option at cluster level

I’ve been facing very recently a naughty issue when I updated my vSphere 4.1u2 FCoE hosts to vSphere 5.0u1. Right after the migration to vSphere 5, majors’ performance issues appeared with the underling storage. I was facing read/write latencies of several thousand milliseconds which lead to dead path detection and of course I/O problem within … Read more

Update vSphere through VMware Update Manager with PowerCLI

I’m always amazed of what you can do with PowerCLI. Actually I’m having version 4.1 of vCenter/vSphere I’m using complete PowerCLI script to configure freshly installed vSphere. I was configuring everything but the last patches. VMware released for some times already a VMware Update Manager PowerCLI. It needs to be installed in addition of the … Read more

StorageVmotion an entire datastore with PowerCLI

Storage vMotion is one of the most astonishing features that VMware brought to the universe of virtualization. I’m certain that storage Admins will admit the migrating Data from on storage array to another can be quite complicated. On physical host it is almost impossible to do such migration without any downtime. Well, Storage vMotion accomplish … Read more

Fibre Channel Security

Honestly, I’m in the SAN for several years and I must admit that I’ve never taken into serious consideration the Fibre Channel Security. I would say that I wrongly thought that it is secured by designed. with VSANs, WWN zonnings, not having every physical ports up on switches, etc… I recently found some papers quite … Read more