Page 902 - Cloud computing: From paradigm to operation

5 Intercloud and interoperability

Table II.9 – Test case: VM scaling

VM scaling test description
6 Stimulus The CSC runs an application on VM A to perform more than
90% consumption of CPU on VM A to trigger auto-scaling.
7 Check A new VM with the same resource configuration as VM A is
added.
8 Stimulus The CSC configures the configuration change based scaling
policy that when memory consumed is less than 10%, reduce
memory allocation by half for VM A automatically.
9 Check The CSC performs low(less than 10%) consumption of
memory on VM A to trigger auto-scaling.
10 Stimulus Memory allocation for VM A is reduced by half.
11 Check The CSC configures the components change based scaling
policy that when the CPU consumed less than 10%, remove a
VM automatically.
12 Stimulus The CSC performs low(less than 10%) consumption of CPU on
VM A to trigger auto-scaling.
13 Check VM A is terminated.
14 Stimulus The CSC configures events monitoring based components
change for VM A that when VM A is suspended, add a new
VM with the same resource configuration as VM A
automatically.
15 Stimulus The CSC suspends VM A.

16 Check A new VM with the same resource configuration as VM A is
added.
Test verdict It is deemed as successfully terminated if all the checks are successful, otherwise it is
deemed as failed.

II.1.10 Test case: VM backup
Table II.10 shows the test case for VM backup.

Table II.10 – Test case: VM backup

VM backup test description
Test purpose To verify that the CSC obtains the configuration and data of a particular VM by making a
backup and restoring the VM.
Reference [ITU-T Y.3513] clause 7.1.7
Test sequence Step Type Description Result
1 Stimulus The CSC makes a backup of VM A, called backup A.
2 Stimulus The CSC changes the configuration and data of VM A.
3 Stimulus The CSC restores VM A with backup A.
4 Check Configuration and data of VM A is consistent with the state
when backup A was taken.
Test verdict It is deemed as successfully terminated if all the checks are successful, otherwise it is
deemed as failed.

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