Estimating the space needed for the IBM Traveler database

You can estimate how much space is needed for the IBM Traveler database before it is installed.

IBM Traveler uses a relational database to store configuration settings as well as meta-data for sync engine operation. By default, IBM Traveler uses a Derby database which is located in the <Domino Data>\traveler\ntsdb directory. If IBM Traveler has been configured to use an enterprise database, then the Derby database in the directory previously listed is not used.

To estimate how much space is needed for the IBM Traveler database, use the following heuristic equation:
U * (D * (700 * V + 4000)) = Recommended DB space available in bytes

where

U = number of users 
D = number of documents per user (a document is a mail message, a contact, a calendar entry, etc...)
V = number of devices per user

This equation applies when estimating the space needed for a local Derby database or for an enterprise database used for IBM Traveler. The equation also intentionally overestimates the size to ensure adequate space for the IBM Traveler database.

Some examples:
  • An IBM Traveler server database servicing 1,000 users with 5,000 documents per user and 1.5 devices per user should allow for 25GB of database space.
  • An IBM Traveler server database servicing 3,000 users with 10,000 documents per user and 1.25 devices per user should allow for 146GB of database space.