Space requirements for call home data upload

The call home component uses the directory which is specified in the IBM Storage Scale settings variable dataStructureDump, for saving the temporary data. By default, this directory is /tmp/mmfs, but it can be changed by the customer by using the mmchconfig command. The current value can be read by running the following command:

mmdiag --config | grep "dataStructureDump"

The space requirements differ depending on the use case. The following two situations are possible:

• For uploading daily and weekly packages, and non-PMR or Salesforce case-related files you require space equivalent to two times the size of the file that is to be uploaded. For example, if you need to upload 1 GB of data, then there needs to be at least 2 GB of disk space for the file to be properly uploaded.
• For uploading the ticket-related files , a dynamical buffered chunking system is used. In this case, the minimum space that is required for an upload is 1/250 of the file size or 0.4% of the size of the file to be uploaded. At least 200 MB of space is recommended to minimize the chunking overhead and maximize the transfer speed.