[rescue] s/390 primary/secondary, multi-level, real/extended, swap, etc.

[Julius Sridhar]

On Wed, 6 Feb 2002, Joshua D Boyd wrote:

> > > > > > Multi-level RAM.
> > > > >
> > > > > Real and Extended is what the system calls it.
> > > >
> > > > Actually, it depends on the OS.
> > >
> > > Yeah -- I suspect under Unix it would be called "swap".
> >
> >   Secondary storage on an S/390 (and going back to the 370
> > architecture I believe) is actually *memory*, not disk.
>
> Would this be at all equivilent to using a ramdisk (the hardware kinda,
> not the software hacks) as /tmp and as the swap partition?

Nope.  No swap algorithm involved.  You allocate secondary storage for
yourself similarly to the way you allocate primary storage (it's
random-access).  It's just a bit slower and there's more of it around.

Peace...  Sridhar