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

[Jan-Erik Soderholm]

Den 2016-11-11 kl. 12:53, skrev Phillip Helbig (undress to reply):
> In article <o041pj$j9e$1 at news.albasani.net>, Jan-Erik Soderholm
> <jan-erik.soderholm at telia.com> writes:
>
>>> - Will existing RMS work with it?
>>
>> Yes, the goal is that RMS will work as it is. No RMS re-work
>> planned as I understand (in regard to the new file system).
>>
>> 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.
>
> Is that the best way to backup things today?

It is one way. And the way that creates backups with metadata
to init a new volume. I said nothing about what is the right way,
just saying that with the new file system, you can have volumes
larger than can be stored in one backup save set file.

Now, depending on the nature of the files on the volume, backup
compession might raise that limit some...




> Zip can handle large files.

Wasn't that an old 2 GB limit in older ZIP's ?
Has probably nothing with the 1 TB file size
limit on ODS-5 files to do, has it?

> The advantages here are that it is much quicker to extract one
> or a few files than is the case with a saveset and also that they can be
> extract on other platforms.  Recent versions of zip also allow for
> something like an incremental backup.
>