QR, in long “Quick Response”, is a two-dimensional barcode in which certain amounts and data can be stored. They create the basis for some mobile-payment-offers.


In a storage system by NetApp, a “qtree” is a subunit in the root directory of a medium which – as partial virtual volume – is endowed with specific attributes. They may be used to organise data or to apply different security styles.


The “Quiescing” is bringing the data lying on a disk of a physical or virtual computer into a consistant state suitable for backups.