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To add a drive to your Greyhole storage pool. First open your dashboard and navigate to the Shares tab. Then click on the Storage Pool sub-category. You will see a page similar to the one below.
[[File:Storage_Pool_1.png|600px|thumb|left]]
Note: Greyhole is not a backup solution. If a file is removed, all copies are removed.
== Copying you data into Greyhole shares the first time ==
When you start using Greyhole, you might want to copy or move all your exiting files into your new shares that use the storage pool.
Note: This is not necessary if your files are already in Amahi shares. If they are there, and you enable the ''Uses pool'' option in the Amahi dashboard, the files will start getting moved around into the drives in your storage pool during the night (starting at midnight), when the nightly storage pool check starts.<br/>
The instructions below are for users who have more data to copy into the Greyhole shares than their currently free space in the /var/hda/files/ folder.
Once way to do that is to mount the shares that use the Greyhole storage pool, either on the HDA itself, or on a client computer on your local network, and copy your data from their existing location into the mounted shares.
This can be time consuming, but it is the safest way to use Greyhole.
Note that you should '''never''' write or modify files directly in the shared directories on the HDA itself, i.e. /var/hda/files/share_name by default. This applies to all shares for which you checked the ''Uses pool'' option in the Amahi dashboard.
Another way to move your files from their current location into the storage pool is to share their current location using an Amahi share that ''Uses pool'', then let Greyhole nightly check move the files from there into the pool.
Here's a more detailed walkthrough for this method:
# Setup the Greyhole Storage Pool in the Amahi dashboard, Shares > Storage Pool page.
# Go in the Shares > Shares page. In there, make sure you have an existing share for each share you have data for. Create new ones if you need, remove the ones you don't need.
# Edit the ''path'' of each of those shares, and enter the current location of your existing data. For example, the Movies share could have a path = ''/media/External Drive/Movies''
# Enable the ''Uses pool'' option for each of your shares, and select the number of extra copies you'd like, if any.
# Now, you either need to wait for Greyhole'S nightly check to start, or you can start it manually from a terminal, as root, using this command: greyhole --fsck
# Monitor /var/log/greyhole.log to see what's the ''fsck'' operation is done.
# Once ''fsck'' is done, your data has now been moved into the Greyhole storage pool (in the drives you selected in Shares > Storage Pool). All that should be left in the previous location of your data (''/media/External Drive/Movies'' from the previous example) should be symbolic links pointing to the new file copies.
# Move all those symlinks from there into the correct folders in /var/hda/files/share_name
# Back in the Amahi dashboard, edit the path of the shares once again, and put back ''/var/hda/files/share_name'' (i.e. the folders where you moved the symbolic links).
You're done. All your existing data is now stored in the various drives included in your storage pool, and are accessible via the Samba shares you have defined in the Amahi dashboard.
