Ticket #1792 (closed defect: invalid)
Documentation: remove misleading paragraph in UG Sec 9.9
|Reported by:||TerryE||Owned by:|
|Version:||VirtualBox 1.6.2||Keywords:||Documentation Userguide raw disk|
"With VirtualBox, this type of access is called “raw hard disk access”; it allows a guest operating system to access its virtual hard disk much more quickly than with disk images, since data does not have to pass through two file systems (the one in the guest and the one on the host)."
Please remove this statement in future editions of the User Guide. It is rubbish. The code path for raw access is pretty much the same as VDI access. In extreme circumstances if the host filesystem is badly fragmented then yes they can be some performance degradation from using VDIs, but in some circumstances they can also work faster. In general, it's pretty much comparable, so it is a mistake to "hard sell" raw hard disk access in this way.