AWS Snowball User Guide
Using the Snowball Client
• Authenticating the Snowball Client to Transfer Data (p. 53)
• Schemas for Snowball Client (p. 54)
• Importing Data from HDFS (p. 54)
• Commands for the Snowball Client (p. 56)
• Options for the snowball cp Command (p. 60)
• Syntax for the snowball cp Command (p. 62)
• Snowball Logs (p. 64)
Testing Your Data Transfer with the Snowball Client
You can use the Snowball client to test your data transfer before it begins. Testing is useful because
it can help you identify the most efficient method of transferring your data. The first 10 days that the
Snowball is on-site at your facility are free, and you'll want to test your data transfer ahead of time to
prevent fees starting on the eleventh day.
You can download the Snowball client from the tools page at any time, even before you first log in to
the AWS Snowball Management Console. You can also use the Snowball client to test your data transfer
job before you create the job, or any time thereafter. You can test the Snowball client without having a
manifest, an unlock code, or a Snowball.
To test data transfer using the Snowball client
1. Download and install the Snowball client from the AWS Snowball Tools Download page.
2. Ensure that your workstation can communicate with your data source across the local network. We
recommend that you have as few hops as possible between the two.
3. Run the Snowball client's test command and include the path to the mounted data source in your
command as follows.
snowball test [OPTION...] [path/to/data/source]
Example
snowball test --recursive --time 5 /Logs/2015/August
Example
snowball test -r -t 5 /Logs/2015/August
In the preceding example, the first command tells the Snowball client to run the test recursively through
all the folders and files found under /Logs/2015/August on the data source for 5 minutes. The second
command tells the Snowball client to report real-time transfer speed data for the duration of the test.
Note
The longer the test command runs, the more accurate the test data you get back.
Authenticating the Snowball Client to Transfer Data
Before you can transfer data with your downloaded and installed Snowball client, you must first run the
snowball start command. This command authenticates your access to the Snowball. For you to run
this command, the Snowball you use for your job must be on-site, plugged into power and network, and
turned on. In addition, the E Ink display on the Snowball's front must say Ready.
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