> Dirmaint sux... I would do it manually before using dirmaint...
> Just my 2cents

Until you accidentally overlay your boss' 191 disk with another
minidisk....voice of experience...8-). Manual minidisk management is a
dead-end for production. It's too easy to be off by one and do real
harm.

The other major product out there is CA's VM:Secure (primarily for
minidisk and userid management; doesn't know anything about Linux).  Wrt
to Linux specific tools, there is also Aduva's product, and Green River
Systems also makes a set of Linux management tools.  CA also claims that
ACF2/VM and Top Secret are somehow in the running, however I discount
them as viable; they're hard to use and fairly rare in VM shops (and
rarer in Linux shops).

DIRMAINT and VM:Secure are userid/minidisk managers only; I wouldn't
class Levanta and the others in with them, as the other tools are fairly
specific in their knowledge of working with Linux guests, and really
concentrate on that function rather than the general problem of managing
virtual machines.

Of the two userid/minidisk managers, VM:Secure is clearly the superior
product. It's vastly easier to use and set up than DIRMAINT, and the
combination of both directory and security management in one tool is
both simple and elegant, and if you have the other VM:Manager tools,
everything "just works" together without a lot of fuss or glue. Why CA
thinks ACF/2 is somehow better escapes me. Its biggest downside is the
price tag -- it's expensive.

On the other hand, DIRMAINT is cheap. It does the job (albeit somewhat
arcanely), and it's preloaded on your VM system. Enable it, follow a
page or so of setup instructions, and you're pretty much rolling. Also,
if you plan to do anything with the z/VM system management APIs, the
SMAPI interface to DIRMAINT is the most mature.

IMHO:

If you know you're going to need backup tools, console management, etc
(and you will), the price tag for getting the full CA VM:Manager suite
is a pretty fair bargain, and VM:Operator is probably worth the rest of
what you'll pay for it. Insist on getting VM:Secure instead of Top
Secret in the package, no matter what the CA droid says -- TopSecret/VM
doesn't cut it.

DIRMAINT plus RACF/VM is a distant second.  The lack of integration
between the security and directory management products is awkward (and
the command syntax drives me absolutely up the wall for both products --
there's a weird sort of logic to it... if you're a denizen of the Lake
of Hali or Rl'yeh, or some other source of Things Man Was Not Supposed
to Know..)

WRT to Linux specific management tools (which tend to build on
VM:Secure/DIRMAINT to do the heavy lifting on the CMS side), there are
again divisions: management of instances, and management of software
deployment to the Linux guests. IMHO, Levanta does the best job on the
instance management side, and slightly less well on the software
management side (although v2 has improved that a lot).  Aduva does a
much better job on software management, but is weak on instance
management. I'm still playing with the Green River tools, so I don't
really have a good handle on what they can do yet, but so far, they seem
more oriented to the software management side as well.

Levanta and Aduva are on the expensive side (comparable with the
VM:Manager suite), but I haven't found anyone yet who's paid full price.
The Green River tools seem more sensibly priced, it's not clear that
they are as comprehensive as the other two.

-- db



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