I recently came across a server that did not have iostat available and I needed estimate when a certain file copy would complete. In order to make a rough estimate I wrote the following one-liner to summarize the available space in the current working directory, wait a minute and then sum again, subtracting the smaller [...]
Exploring the idea that innovation isn’t about being first, it’s about being right.
Doing encryption on the fly, on an entire filesystem for instance can be a very intensive process and bound by the CPU’s ability to decrypt or encrypt during reads and writes. I’ve run into just such a situation where disks are idle awaiting data to be encrypted. I encountered disk performance of roughly 300M/s writes [...]
ESX 4.1 (update n) will be the last installable version of ESX to retain the service console. There is no upgrade path for ESX to ESXi, you must reinstall to migrate or upgrade. Upgrading is a great reason to consider modernizing your virtualization infrastructure. VMWare currently recommends that new deployments of vSphere 4.x are done on [...]