> -----Original Message----- > From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On > Behalf Of Jim Bohnsack > Sent: 06 May 2008 03:15 > To: [email protected] > Subject: Re: SFS > > Alan Altmark wrote: > <snip> > <esnip> > > Yeah, but anyone who was around in VM/SP R6 days remembers SFS as being > something that you wanted to stay away from. >
Speaking as some one who was around in those days, but who only has peripheral involvement in VM these days, I would have said that for many applications SFS was a great tool. No one ever had enough 3380s, the floor space and power they used saw to that. Then when you physically carve them into MINIDISKS you "waste" a huge chunk of them, because every one has their own private chunk of free space. Where I worked we would have loved to give every one SFS "A" disk. One problem that slowed its deployment was getting IBM products to support it. I can see from http://vm.marist.edu/~vmshare/browse?fn=6SP02&ft=PROB That VM/SP6 came out some time in early 89 (or perhaps late 88 which would give us 20 years of SFS, was it that long ago) But I can also see from:- http://vm.marist.edu/~vmshare/browse?fn=OVVM&ft=PROB&args=sfs#hit That almost three years later, in March 92 PROFS would not support SFS "A" disks. I don't think real PROFS ever supported SFS "A" disk, I think we had to have OV/VM for that... I must admit I now find it mildly amusing to have IBM telling us we need to use it.... Dave > Jim > > So while I appreciate the frustration of having to worry about SFS when > > you haven't in the past, the time has come for us to exploit something > we > > introduced over 20 years ago in VM/SP Release 6. > > > > Regards, > > Alan > > > > Alan Altmark > > Sr. Software Engineer > > IBM z/VM Development > > > > > > > -- > Jim Bohnsack > Cornell University > (607) 255-1760 > [EMAIL PROTECTED]
