Question

IT Documentation

Asked by: manuel2002m

I have been asked to create full documentation for a system that I handle.
We have about 75 Servers providing apps to customers. 4 routers, 4 Firewalls,
All SUN running Solaris 10.
We use many different technologies, such as SUN Clusters, Load Balancers, SUN Logical Domains, Routers, NAT, Firewalls, DNS, MySQL, Postgres, SUN Glassfish, about 10 proprietary applications, etc etc. (Im not ordering the list with any logic, apologies)
We run the store with only three people, we overlap in functions, so we all know what the other does.
The company has a big development team, but IT is very small, so, Development give us the software and the Scripts to create the DB, together with some documentation,, IT (us) must install, test, execute load test, deploy and maintain the whole show. IT (us) planned the infrastructure in a way that has the minimum downtime during operation, maximizing the usage of the equipment.
After some time of planning, we came up with virtualization, SAN arrays, dual cards, dual circuits, collocation facilities, etc etc, So, our system can be upgrade inline, part of it can be taken offline while we do maintenance work on other parts, etc etc. No that we have any formal training in High Availability, but so far, we can literally unplug half of the electric circuit, hence shutting down half of the system and the downtime during failover and convergence is about 20 seconds. The system is a little over dimensioned, since we can run with half of it and still being over the degraded mode threshold.

Well, this is the problem,, everybody like the way it works, but the reasoning and the planning and all the execution is on the head of my three guys and myself, so, Management wants me to put everything on paper.
I dont know where to start, I dont know if there any standard for those kind of documents.
I dont know to which extend I must document (since I have information to fill a book).
Is there any place I can find similar documentation? following like a pattern or a framework.
I dont even know how to name the documents :-) .

As you can notice, we were not prepared to do this job, but we were asked for and we did, in a very empirical way, following manuals, documents online, asking questions, taking the advise for the manufacturer, etc.
Now we must document.

I hope some people can give us a hand on starting.
Thanks

MM.

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Asked On
2009-01-14 at 08:30:22ID24051415
Tags

Documents

,

Documentation

,

IT Governance

,

Governance

Topic

Documentation Software for Development

Participating Experts
2
Points
500
Comments
3

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Answers

 

by: TallBoyPosted on 2009-01-14 at 09:10:10ID: 23374917

We use Twiki (http://twiki.org/) to document our systems and applications, usually by function ("email", "infrastructure", "user-login" etc).

 

by: vzkbPosted on 2009-02-11 at 19:51:25ID: 23618985

MM,

To avoid a long learning curve, I'd suggest to handle the documentation as a project itself, and the output is a 'system' of documents.

I personally found it very useful to use the use case pattern, especially the Actors/Stakeholder viewpoint. Here's what I did in a situation like yours (not exactly, but imho producing a process documentation comes quite near:-):

1. Identify Actors, in your case: your readers
2. Interview them regarding their expecations for the documents
2.1 Listen mostly, don't try to offer suggestions during the interview
2.2 Some questions that prooven useful for me:
 * What decisions will be made based on the document input?
 * Why is the information documented important for you?
 * How often will you revisit the document?
 * Do you have examples for such a document you want to have?
3. Based on the interviews, your first work product would be the documentation overview or a document index
3.1 start with 1 document per Reader Role (if two readers have the same responsibilities, they share one role)
3.2 Name the documents & their purpose only, don't put content in them (yet:-)
4. Get a sign-off by upper management to start working on the documents
5. Start searching for templates & examples
5.1. Ask your system providers (SUN in your case at least) what they use to document - they usually have a broad experience & oversight on how their systems are documented by other customers
5.2 Adopt the templates for your needs (rule of thumb: a template where you only remove sections is more useful than a template where you have to add sections)
6. Sign of the templates (!not! the content)
7. Fill the templates with content
8. deliver finalized documents and get sign-offs where needed

I personally found it good to do some review juggling before handing over a final version of a document:
 * let the main stakholder officially sign off the layout & structure of the document independently and before you finalize the content
 * let other readers (with similiar experience, independent of their role) review early versions of the document.
 * The earlier you review a document, the less change efforts/time you will need.

Hope this helps & havagoodone!
Volker

20120131-EE-VQP-002

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