[Info-vax] VMS - The new file system. What do we know about it?...

[Hans Bachner]

Jan-Erik Soderholm schrieb am 11.11.2016 um 10:08:
> [snip]
>
> The structures that goes from 32 to 64 bits are those that
> are below RMS, so to speak. Something was mentioned as an
> example of a limit that will not change due to this, but I
> do not remember what it was. Hm, maybe it was the maximum
> size of any single individual file? Yes, I think it was...
> 1 TB it is, right?
>
> So I guess that if/when you have these larger volumes, you
> cannot any longer take full backups as disk backup savesets.
> [snip]

As far as I remember from Andy's presentation at the boot camp, the new 
on-disk structure is a completely 64 bit architecture, but will be 
rolled out in two steps:

V8.x (2H17) will bring the new structure (binary directory trees, log 
based writing), but will still be limited to 32-bit LBN addressing.

V9.0 will have 64-bit LBN addressing implemented, support the new file 
system on a system disk and will bring any minor features/utilities 
which don't make it into step 1. Individual files will still be limited 
to 1 TB until the RMS API gets a major "upgrade".

Hans.