AWS Snowball - Page 67

AWS Snowball User Guide
Using the Snowball Client
Command Option Description
• By default, batches hold up to 10,000 files. This limit can be changed by
setting the --batchNumOfFiles option. The number of files in a batch
can range from 5,000 to 100,000 files.
During import into Amazon S3, batches are extracted and the original
files are imported into Amazon S3. Only .snowballarchives files that
were created during the copy command with this option are extracted
automatically during import.
--checksum On and set to false by default.
Calculates a checksum for any source and destination files with the same
name, and then compares the checksums. This command option is used
when a copy operation is resumed. Using this option adds computational
overhead during your copy operation.
Note
When this option isn't used, a faster comparison of just file names
and dates occurs when you resume as copy operation.
-f, --force On and set to false by default. This command option has two uses:
• When used with a copy command, -f overwrites any existing content on
the destination that matches the path and name of the content being
transferred.
• When used after a copy command is run, -f overrides the --resume
command option. Instead, your copy operation is performed from the
beginning again, overwriting any existing content on the destination with
the same path and name.
Note
The preceding use cases are not mutually exclusive. We recommend
that you use -f with care to prevent delays in data transfer.
-h, --help On and set to false by default.
Displays the usage information for the snowball cp command in the
terminal.
--noBatch String.
Disables automatic batching of small files. If you're copying a directory,
and you use this option, you must also use the --recursive option. This
option is hidden. For performance reasons, we don't recommend that you
use it unless your use case requires it.
-r, --recursive On and set to false by default.
Recursively traverses directories during the snowball cp command's
operation.
-s, --stopOnError On and set to false by default.
Stops the snowball cp command's operation if it encounters an error.
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