Multi-Part (Accelerated) Transfers
You can greatly speed up the transfer of large files using multi-part transfers. A multi-part transfer divides large files and sends the parts over multiple FTP sessions.
You can only use multi-part uploads with servers that support the COMB command, such as Globalscape EFT Server.
To perform a multi-part download
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Connect to a remote Site.
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In the Remote pane, click the file you want to transfer.
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In the Local Drives pane, open the destination folder.
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On the main menu, click File > Download Advanced > Multi-part Download, then click one of the following:
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HIGH, to split the file into two parts
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MAX, to divide the file into more parts
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To perform a multi-part upload
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Connect to a remote Site.
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In the Local Drives pane, click the file you want to transfer.
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On the main menu, click File > Upload Advanced > Multi-part Upload, then click one of the following:
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HIGH, to split the file into two parts
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MAX, to divide the file into more parts
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Notes
- Very large files can take time to combine, so you might have to refresh (F5) the screen after a large multi-part transfer to see the resulting single, combined file on the remote server.
- You can quickly gauge the effectiveness of the transfer by highlighting that item in the Queue Window, and clicking on the small plus sign + next to the item name. The item will expand to show you all parts of the transfer with the average speed of each part.
- Multi-part transfers are not very effective for smaller files.
- Multi-part downloads do not occur for Sites that do not support resume downloading.
- Multi-part transfers are not very effective within your own network.
- Multi-part transfers are not very effective for modems slower than 56kb, because most FTP servers can at least transfer at that speed.
- Multi-part transfers do not work if the FTP Site does not allow multiple simultaneous connections from the same user or IP address.
- Due to added overhead on the processor of a server when generating encrypted transfers, multi-part downloads over SSH and SSL can be ineffective and are not recommended.