[Info-vax] Large mailboxes - RMS Indexed file internal design

[Arne Vajhøj]

On 12/6/2020 2:34 PM, Dave Froble wrote:
> On 12/6/2020 12:14 PM, Michael Moroney wrote:
>> You'll be happy to know that VMS addressing drives larger than 2TB has 
>> already
>> been done (largely by myself) and will be in V9.x, and is in a V8.x 
>> version
>> which may or may not see the light of day.  This will not help with 
>> Files-11
>> since ODS-2/5 also has a 2TB limit and really can't be updated. To use 
>> the
>> changes will require a new file system.
>>
> 
> There are users who do not, and never will need storage greater than 2TB.

In a number of years you will not be able to buy 2 TB and smaller disks.

:-)

> Will there be any advantages in the new file system(s) other than size 
> of storage?  Perhaps performance?  Or will users of say ODS2 still have 
> similar performance?

When the new file system was discussed previously it was
indicated that it would be accessed traditionally VMS style
through RMS, so the potential for performance improvements
must be a bit restricted. But I could imagine directories
getting faster.

Besides that then GFS has some features: journaling,
no limits on path length, all characters except NUL
valid in filenames. But again compatibility requirements
may prevent VMS from using those.

Arne