A cautionary note. Microsoft's Surface Pro tablet will ship with considerably less free storage than expected. While it is common for devices to keep some storage aside for the OS installation and recovery purposes, the Surface Pro takes this concept to pretty ridiculous levels. Specifically, the 64GB model will ship with just 23GB of free storage, whereas the 128GB will have 83GB of free storage.
The reason behind this is that some storage space is required for the Windows 8 install as well as built-in apps and a recovery partition. Thankfully, Microsoft has said that users will be able to reclaim some free space by creating a backup bootable USB and deleting the recovery partition. Don't keep your hopes up, however, as we don't expect this to free up that much free space.
This is similar to the Surface RT tablet, where the 32GB model had only just half the advertised storage space available because of the Windows RT install. In fact, this incident is also similar to the initial launch of the Xbox 360 Pro back in 2006, where, because of the need of emulation software, the 20GB Xbox 360 Pro shipped with just above 10GB of free storage space.
Fortunately, the Surface Pro tablet supports USB 3.0 hard drives and microSDXC cards, so at least there are ways to expand storage. But still, at this price point (US$899 for the 64GB model), having just 23GB of free storage is pretty laughable, and we don't expect consumers to take too kindly to this news.
Source: The Verge