DD-WRT USB Storage NAS Setup. Use DD-wrt USB Hard Drive as Network Attach Storage on your local network. A USB hard drive can be used as network-attached storage, shared by all computers on a LAN using SSH (scp), FTP, Samba or NFS.
Most standard internal hard drives (notebook or desktop) can be converted simply by installing them in an inexpensive USB enclosure. A USB hard drive can also be used as virtual memory by creating swap space.
Instead of abruptly running out of memory when the 32Mb of physical RAM in these units is full, a portion is swapped to disc and the applications continue to run normally, but with a speed penalty.