5. Moving data between CSC and local environment
The disk environment of CSC allows user to deal with very large datasets. However, transferring large datasets to CSC can take a long time. Data transfer performance depends mostly on available bandwidth and distance or latency of the connection. Recent operating systems have automatic TCP buffer tuning feature that improves data transfer performance. Firewalls and VPN tunnels may cause performance degradation. Transferring a 1 GB file to or from CSC computing environment should usually not take more than a minute or two if the organization's network is connected to Funet. Contact the local IT support in case of problems.