Windows version of Mac's Target Disk Mode?

Q: Treat disk on another computer as slave disk (via network)
A: ...

Why don't we have Target Disk Mode for non-Apple machines? (June 6, 2012)
The closet a non-Apple machine can come to target disk mode is booting a micro Linux distro off a CD or USB key, one that loads the kernel, initrd, and file system entirely into RAM so it doesn't need to use the storage device after boot. The micro distro can export disks over SMB/CIFS, NFS, NBD, iSCSI, FireWire if you have it, or whatever else you feel like

Move Files from a Failing PC with an Ubuntu Live CD (Published 05/14/10)
Read "Connect to a Windows PC on your Local Network" section :
To do this, we will share one or more folders from the machine booted up with the Ubuntu Live CD over the network, letting our Windows PC grab the files contained in that folder.

Target disk mode equivalent for windows 8?
"Target disk mode" is a feature of the computer's hardware/firmware and has little to do with the OS. All current Apple hardware supports it, but there is no common equivalent on ordinary "PC" systems, the closest equivalent I've seen is that some server hardware allows the internal HD to be accessed over the network without booting the OS via the "management card" (and appropriate management software)

Nearest PC equivalent to Mac Target Disk Mode?
http://serverfault.com/questions/8396/nearest-pc-equivalent-to-mac-target-disk-mode