Allocate space on create

From AzureusWiki

By default, Azureus (since version 2.1.0.4) allocates all the space that a torrent will need to download as soon as the download begins.

To have it gradually grab space as it downloads: Tools > Options... > Files > Check "Enable incremental file creation"

The reasons for allocating the files at once:

• Attempting to avoid files getting fragmented on the disk
• Additionally, as pieces of files are downloaded in random order, the last piece might be downloaded rather soon, in any case.