There is some method to store recordings directly at network storage, similar to the one in the B-series.
-Create an ordinary recording device. I bet you have one already.
-Mount some network storage on TV - i prefer NFS system. You have it already, right?
-SSH or Telnet to the tv
-create "CONTENTS" directory at your network storage, so full path to the new created dir form tv point of view will be for example /dtv/usb/sdb/nfs/192.168.1.105/storage2/media/recorded/CONTENTS
-copy all content of original "CONTENTS" at your recording device to the new created directory. In my case src dir was /dtv/usb/sda2/CONTENTS
-rename (or delete) original "CONTENTS" at your ordinary recording device
-make a symlink to the network place (eg. /dtv/usb/sdb/nfs/192.168.1.105/storage2/media/recorded/CONTENTS) named "CONTENTS" at your recording device (in my case it was /dtv/usb/sda2/).
It should work by now. Try to access recordings by entering your recording device as usual, ie. by SOURCE button at remote. All previously recorded content should be normally visible. Try to play something. If it works, try to record something. From PC go to your network share and check if new files are created (*.inf, *.mdb, *.srf, *.cip,*.ss). If so, your work is done. To be sure, try to play newly recorded content.
I bet there is no need to tell how extremely useful it is
You can inject LibNoDRM and watch recording on other device (eg. PC, other TV) even if it is still recording). You can then make a symlink(s) to not encrypted *.srf-s to *.ts. You will be able to play it at tv content browser or other playing stuff.