Hi,
Following our discussions
from last week I want to comment
on the Datacenter Service Hierarchy presented.
This actually relates to
the definitions of the terms we
use.
The terms used in the
proposed hierarchy are:
- Industry
- Business
- IT Service
- Resource ->
ManagedElement
There are no suggested
definitions for those terms (not any
that I found in the DCML docs that is).
I looked for reference at
the terms used in the ITIL for
example:
Industry - isn’t defined
Business - isn’t an item by
itself (a business
unit is for example)
Service (referring to IT
service)
Resources
System
Host is what we call a
server, including the application running
on it
I suggest we first define
the following:
- Everything one can manage
can be a ManagedElement, not just the Resources. An IT service, one is
sure to manage, for example can be a ManagedElement as well.
- As suggested, a resource
can be any combination of resources as well.
- An IT service is easily
defined. It could also be comprised of a combination of any IT services.
- By a business I think we
should refer to an IT service that serves a business purpose. The term
that was used was Business Process Service, why not keep it?
- Industry still needs
better definition
Specific examples would
get us going easily…
- A server is a resource
- A bunch of servers are
yet another resource
- A Storage device is a
resource
- An IT personnel is a
resource
- A web service is an IT
service
- A naming service is an IT
service
- Printing is an IT service
- CRM is a business (I
suggest we call it a business process service)
- A call center is a
business (I suggest we call it a business process service)
Some questions and
suggestions
- As the name of the TC
goes – what is an application?
- I think that by
application we actually refer types of Services
- How do we relate to the
Networking TC?
- Is Networking a Resource?
- Is Networking a Service?
- I suggest we let
Networking be a combination of Resources and Services
- How do we refer to the SW
application part of the service?
- We defined the web
application by a group of resources but the web application doesn’t
have to be part of the resources
- How do we refer to the
web application SW?
- We can enlarge the server
resource as the ITIL does to include the application it runs. This
would mean that a service is comprised of physical resources, logical
resources (i.e. application SW) and human resources
- How do we differ between
IT services and business process services?
- I think we should allow
both of them to be types of services
- The only difference is
the User/Customer perspective
- This means that Business
Process Services are just another type of services
The new proposed
hierarchy looks like:
- Industry (needs better
definition)
- Services – Business
Process Services, IT services
- Resource – Physical
Resources, Logical Resources, Human Resources
Where all of the above
can be ManagedElements.
Barak
Perlman
VP
R&D
Direct +972 3 608 1604
Office
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3 607 4243
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3 607 4242
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