Availability Guide for Change Management

Change Control
Availability Guide for Change Management–125506
2-4
Phase 1—Definition and Documentation
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The estimated duration of the outage. (Tandem recommends that you measure
outages in minutes. Section 1, “Introduction to Change Management,” describes
how to measure outages in minutes.)
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The reason for the outage.
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The name of the person or group requesting the outage.
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Applications affected by the outage.
Figure 2-1 shows an example of a planned outage request form.
Note. The maximum times on the following form are only examples. Times will vary from
installation to installation and can depend on a number of factors, including the size of the
configuration. You should modify this form based on your own needs and experience.