[Info-vax] Layered products, the HP view !?!

[Stephen Hoffman]

On 2015-06-19 10:46:05 +0000, Jan-Erik Soderholm said:

> Now, do I think that it would be a good idea to have something as 
> complex as Rdb (or similar relational database package) to handle such 
> low level things as "PCSI, LMF, SYSUAF, etc."?
> 
> No, probably not. It would give some nice features when everything was 
> up and running like querying the UAF "database". But on the other hand 
> it could also create additional problems when your system doesn't boot 
> and maybe you do not get the database up.
> 
> IMHO, it would have to be somehing like the embedded databases like 
> those that Android uses internally. A database like Rdb is best left 
> for the heavy load with the applications.

PostgreSQL and SQLite would be typical here.

If the database won't start, the behavior is exactly the same as the 
present solution with problems accessing UAF; a backdoor startup from 
the console or the management processor.  While databases can be 
complex products and sometimes won't start, various present-day OpenVMS 
implementation involving getting access to a remote SYSUAF file 
accessed from a host booting via a satellite bootstrap and 
network-based cluster communications operating over IP networking to 
host-based served storage presenting access to a fibre channel storage 
controller that is itself operating via a FC over IP link and 
presenting virtualized storage on a mixed pool of traditional hard 
disks and SSDs and inboard flash storage sometimes doesn't work, after 
all.


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