AllAccepted answers
Robert Cemper · Sep 25

Release notes version 1.0.0

Based on the very positive feedback, I have added a new functionality.
It is now possible to also take a snapshot from a remote system.
The only requirement is to append an URL-Parameter formatted like this:

?SERVER=IP-Address[:SuperServerPort[:Username[:Password]]]

defaults: port=1972 user=_SYSTEM pw=SYS
Example 

http://localhost:42773/csp/user/ZX.dbdash.cls?SERVER=192.168.0.11:11972:SuperUser:SYS
Robert Cemper · Sep 24

From Class Docs:
• classmethod ExportAllClassesIndividual(dirname As %String = "", qspec As %String = "", ByRef errorlog As %String, Charset As %String = "", Package As %String = "*", SubDir As %Boolean = 0) as %Status

Export all the classes as individual XML files to a directory.

This method loops through all the classes, exporting each one as an individual XML file named after the classname to the directory dirname. If you specify a Package, then it exports only this package. If SubDir is true,, the method exports sub-packages as subdirectories.

Now the directory is your list of classes and equal sizes of files 
might most likely mean identical content. Or you do a text compare

Robert Cemper · Sep 24

You are right. $system.OBJ.Export~whatever is oriented to the Namespace

BUT:
There still seems to be no limitation to map a specific database file
to more than 1 namespace. e.g. USER and MERGER (here Read Only)
Then $system.OBJ.Export~whatever takes what it finds in MERGER.
It's quite a dirty approach and only meant for READING the code, therefore, ReadOnly

In any case, it's safer just to copy the (most likely static) DB of interest
and use it in MERGER
 

Robert Cemper · Sep 2

When I started in business, quite back in the last century, certifications were not common practice.
Only certificates from European Universities, with just a few from IBM were accepted.
Recruiters were impressed, but managers were more sceptical about.

Having collected a bunch of certificates, this was some disappointment to me.

My later boss explained it to me:

The certificates show that you are strong in learning and delivering tests
Here, we have to provide fast and stable code. This counts.
I had a Dr. Math. from the University that, after 4 weeks of training, was
   not able to write 17 correct running lines of assembly language.
What worth does its certificate have for me ?

This was 53 years ago, and I decided on less noise on paper and more work success

Times are different today

Robert Cemper · Aug 16

I'm fully in Sync with @Dmitry Maslennikov 
Uniqueness is the TOP priority. 
Though you can switch it off for rare cases by the class parameter  MANAGEDEXTENT.

Concerning access speed, naming is not really relevant.
Top level of global storage is a sorted hierarchical directory structure that points to the globals.
So, on average, any global has - with actual storage speed -  the same access time.
And global directory is mostly permanently cached in Global buffers.

BTW: You can list this directory using ^$GLOBAL()

set dir="^$GLOBAL("""")"
for  write dir,! set dir=$QUERY(@dir) quit:dir=""