Depuis Windows 2012 (et accessoirement Windows 8), Microsoft a décidé d'ajouter la gestion de la QoS à son système d'exploitation fétiche.

Sans s'emballer, il n'est pas question de pouvoir gérer des algorithmes type HFSC ou CoDel, mais il est tout à fait possible de limiter la bande passante d'une application gourmande (je pense aux divers clients drive cloud par exemple).
La solution est directement implémentée au niveau stack réseau, et ne nécessite pas le parefeu Windows pour fonctionner.

Some months ago I inherited of a Hyper-V infrastructure in pretty bad shape, where I had to reinstall the hypervisors one by one, adding FC cards for redundancy, adding network card redundancy etc.

Ever since I got to manage that infrastructure, I got hit by the following error messages while perfoming backups:

After reading the excellent article about cygwin bash scripts under Windows by duncansmart, I wanted to adapt this script so it could handle scheduled tasks as system without having a windows user account involved (launching bash without --login option).

So, in order to execute a bash script called something.sh in /cygdrive/c/home/something.sh, here is the counterpart that will execute the script directly from Windows, called c:\cygwin\home\something.cmd: