Rumor has it that Legato is working on a Prestoserver for the RS/6000.
I thougt a Prestoserver, as used by Sun and Dec, was a kind of disk-cache.
As many operating systems--e.g. AIX and IRIX, unlike SunOS and Ultrix--use memory-mapped files, I assumed that the operating system would take care of that (given enough memory at least), making a prestoserver unnecessary on IBM and SGI systems, or at least not cost justified. Obviously I was wrong on that, so if anybody would please explain the Prestoserve concept for me, especially in combination with the RS/6000, I would be very grateful.