Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bionet!ames!lll-winken!uunet!modcomp!joe From: joe@modcomp.UUCP Newsgroups: comp.arch Subject: Re: Cryo-refrigerators Message-ID: <6800008@modcomp> Date: 15 Mar 89 18:17:00 GMT References: <4409@pt.cs.cmu.edu> Lines: 16 Nf-ID: #R:pt.cs.cmu.edu:4409:modcomp:6800008:000:655 Nf-From: modcomp.UUCP!joe Mar 15 13:17:00 1989 > The only reason to talk about fiber is that we have fiber drivers now; > but if we had the photonic switching technology necessary to use it as > a storage medium efficiently, it would be easier to use free-space > storage (bounce the beam around between mirrors). At a reasonable > limit for visible light you can store a bit in about a 5-micron cube > of empty space; this gives you 100 terabytes in an (empty!) 20-inch box. > > Need those switches, though. Sounds pretty neat. The cube will need, however, a *real good* battery backup to keep those power glitches from dropping the 100 terabytes into the bit bucket. joe korty uunet!modcomp!joe