When it comes to managing a large complex data center and
the server infrastructure within, many CIOs know they have severe
challenges. Some might even characterize
their predicament as being akin to ordered chaos! Most know where and what their business
critical servers are and what they are doing.
These might comprise 10 to 20% of their overall IT infrastructure. It’s the other 80 to 90% that few know where
and what these systems do AND, more importantly, how they impact factors like
capacity management (IT flexibility), response and recovery time objectives
(DR), labor efficiency (costs), and more.
Wouldn’t it be nice if only there was some type of metric that would
assist in understanding where major areas of complexity reside, how to deal
with them, and how they compare with other IT environments of similar size,
industry, and make up?
Good news! There is
now. Using IT infrastructure data that
the IBM Systems and Technology Group’s Lab Services team has amassed from 1,000
plus completed IT optimization assessments (ITOs) over the last 10 years, one
can actually begin to calculate a metric we call the “Infrastructure Complexity
Index” (ICI for short). This ICI can be
(and has been!) used to find and educate IT personnel on specific areas of IT
complexity and the factors involved in addressing these areas.
The ICI metric itself is composed of a number of components,
each of which can have an impact (positive or negative) on the level of IT
infrastructure complexity being shown.
By recognizing the relative impact of each of these components and the
effect on their ICI, a governing IT management team can advise, and make course
corrections to simplification, standardization, and overall optimization of the
IT environment.
The major components affecting the ICI metric include the
following:
- Server hardware vendor variation (count of unique hardware vendors in use)
- Server hardware model variation (count of unique hardware models in use)
- Server physical servers (count of unique serial numbered servers in use)
- Server operating system vendor variation (count of unique O. S. vendors in use)
- Server operating system version/releases (count of unique O. S. version/releases in use)
- Server logical servers (count of unique logical servers using an O. S. in use)
Using these components together, one can calculate the ICI(1)
for a given IT environment and share this with others in the organization as
part of an overall ITO analysis and set of recommendations on how to decrease
IT complexity and the resulting benefits of doing so. In addition, the ICI can be used to benchmark
your IT environment with another of similar size and type.
With the proper data in hand, one can even decompose the ICI
down to the operating system (AIX vs Windows vs Linux), vendor (Oracle/SUN vs
IBM/AIX vs HP/UX), or even platform type (Unix/RISC vs Linux/x86), thus
providing further insights as to where deeper areas of infrastructure
complexity might be impacting the previously mentioned areas of IT flexibility,
recoverability, and cost.
Although currently focused on server infrastructure
complexity, work is ongoing to expand the use of ICI to other areas of IT
infrastructure complexity, including storage, network, and even software
stacks. For further clarification on the
ICI and how it could be used for your situation, please contact the author
(John F. Ryan jfryan1@us.ibm.com).
Thanks to John Ryan for his guest contribution!
(1)
The actual formula
used to calculate the ICI is the intellectual property of the IBM and is
currently under patent review. Please
contact the author for specifics on how to introduce the ICI to your situation