lotus/documentation/en/storing-data.md
2019-12-18 10:46:11 -08:00

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# Storing Data
> There are recent bug reports with these instructions. If you happen to
> encounter any problems, please create a
> [GitHub issue](https://github.com/filecoin-project/lotus/issues/new) and a
> maintainer will address the problem as soon as they can.
Here are instructions for how to store data on the **Lotus Testnet**.
## Adding a file locally
Adding a file locally allows you to make miner deals on the **Lotus Testnet**.
```sh
lotus client import ./your-example-file.txt
```
Upon success, this command will return a **Data CID**.
## List your local files
The command to see a list of files by `CID`, `name`, `size` in bytes, and
`status`:
```sh
lotus client local
```
An example of the output:
```sh
bafkreierupr5ioxn4obwly4i2a5cd2rwxqi6kwmcyyylifxjsmos7hrgpe Development/sample-1.txt 2332 ok
bafkreieuk7h4zs5alzpdyhlph4lxkefowvwdho3a3pml6j7dam5mipzaii Development/sample-2.txt 30618 ok
```
## Make a Miner Deal on Lotus Testnet
Get a list of all miners that can store data:
```sh
lotus state list-miners
```
Get the requirements of a miner you wish to store data with:
```sh
lotus client query-ask <miner>
```
Store a **Data CID** with a miner:
```sh
lotus client deal <Data CID> <miner> <price> <duration>
```
- Price is in attoFIL.
- The `duration`, which represents how long the miner will keep your file
hosted, is represented in blocks. Each block represents 45 seconds.
Upon success, this command will return a **Deal CID**.
The storage miner will need to **seal** the file before it can be retrieved. If
the **Lotus Storage Miner** is not running on a machine designed for sealing,
the process will take a very long time.