DTS transfers data in manageable chunks named parcels. The size of the parcel affects many things, including the following:
The bigger the parcel size, the faster the transfer.
The bigger the parcel size, the more memory an agent uses (since it has at least one parcel of data in memory at any given time during a transfer).
After each parcel transfers, it is tagged as part of the automated checkpoint and restart feature. If a failure occurs during the transfer process, DTS can restart the transfer from the last successful parcel transfer.
When transferring files between agents running on slower systems or over slower networks, transfers can be suspended or can fail with the message "Connection failed to address|hostname." This condition can be due to timeouts while processing large parcels of data. If this situation occurs, we recommend reducing the maximum parcel size value for transfers to slower systems.
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