larryc@puente.jpl.nasa.gov (Larry Carroll) (05/03/91)
In Sun's Network Programming Guide, on page 9, it says "The flexibility of NFS allows configuration for a variety of cost and performance trade-offs. ... In the case of read-only files, copies can be kept on several servers to avoid bottlenecks." However, I've spent a couple of hours reading the table of contents & the totally inadequate index & can't find where it tells how to do this. Ditto results for an examination of the System & Network Admin. Manual. Is the quoted material a bunch of lying hype? Or can someone point out the part of the manuals where I can read up on this & implement it? And if this ability is real, do very many other vendors have it, such as DEC's Ultrix?
geoff@hinode.East.Sun.COM (Geoff Arnold @ Sun BOS - R.H. coast near the top) (05/03/91)
Quoth larryc@puente.jpl.nasa.gov (Larry Carroll) (in <1991May3.051305.16446@jpl-devvax.jpl.nasa.gov>): #In Sun's Network Programming Guide, on page 9, it says #"The flexibility of NFS allows configuration for a variety of cost and #performance trade-offs. ... In the case of read-only files, copies can #be kept on several servers to avoid bottlenecks." # #However, I've spent a couple of hours reading the table of contents & #the totally inadequate index & can't find where it tells how to do #this. Ditto results for an examination of the System & Network Admin. #Manual. # #Is the quoted material a bunch of lying hype? Or can someone point out #the part of the manuals where I can read up on this & implement it? #And if this ability is real, do very many other vendors have it, such #as DEC's Ultrix? Start with "man automount". Note the section on replicated filesystems. Geoff -- Geoff Arnold, PC-NFS architect, Sun Microsystems. (geoff@East.Sun.COM) -- ------------------------------------------------------------------------------ -- Sun Microsystems PC Distributed Systems ... -- -- ... soon to be a part of SunTech (stay tuned for details) --
thurlow@convex.com (Robert Thurlow) (05/03/91)
In <1991May3.051305.16446@jpl-devvax.jpl.nasa.gov> larryc@puente.jpl.nasa.gov (Larry Carroll) writes: >In Sun's Network Programming Guide, on page 9, it says >"The flexibility of NFS allows configuration for a variety of cost and >performance trade-offs. ... In the case of read-only files, copies can >be kept on several servers to avoid bottlenecks." >Is the quoted material a bunch of lying hype? Or can someone point out >the part of the manuals where I can read up on this & implement it? >And if this ability is real, do very many other vendors have it, such >as DEC's Ultrix? With the automounter (man 8 automount), you can set up, say, copies of the man pages on three different servers and have the automounter pick up one of them on demand, insulating you from both dead servers and providing you with load balancing. As for whether particular vendors support it, Sun's ONC/NFS Technology Guide (ask your Sun rep) has a chart that shows about 30 automounter implementations, including DEC Ultrix. Rob T -- Rob Thurlow, thurlow@convex.com An employee and not a spokesman for Convex Computer Corp., Dallas, TX