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Vasily Gancharov (solution architect) is collecting NFR details about FOLIO modules. He has asked for some information about the modules I own (Requests, Locations and Service points) and I'd like your input. Questions:

1. How many items of each type approximately will be stored in the module annually? What is the expected annual growth for each item type? This questions are related to the back-end modules only.

2. How many users per day will utilize the module on average in the next year? The user here is the person leveraging the module. What is the expected annual growth for the number of users?

3. What functions the module should perform? What is the desired speed of each function should be? (you can specify a magnitude instead of precise value here, e.g. milliseconds, seconds, minutes, etc.). The smaller the value, the more complex and expensive the technical solution might be, so, please, specify the reasonable amount of time.

4. Let’s imagine there is an unexpected issue and the module is unavailable. For how long the module users can tolerate its absence until the module is restored? Please, specify approximate value/value range here. For instance, few minutes, several hours, etc. The smaller the value, the more complex and expensive the technical solution, so, please, specify the reasonable amount of time. Please, specify also a short rationale to justify the numbers.

5. What consequences will be if the module is unavailable for more than a specified period of time?

6. What is the maximum number of module faults users can tolerate per day, per month? (fault here is the unexpected issue that makes the module unavailable). Please, specify approximate value range here.

For instance:

     - 1 – 2 per day

     - 2 – 5 per day

     - 10 – 20 per month - etc.

Please, specify also a short rationale to justify the numbers.

7. What time of the day or time slot is the best for module/system maintenance? Can maintenance be performed on any day or only on specific days? What is the maximum maintenance time window is allowed per day, per month? Maintenance here is the planned system/module update. Please, specify approximate value/value range here. For instance, few minutes, several hours, etc.