| # Caching a Grid in Your Own Cache at the Server |

Personally managed cache directories are made available in WebGrid to support researchers in data collection and analysis.

You can register a personal directory under your control and specify a user name and password that gives you access to it.

You can cache one or more grids in this directory and provide others with URL's that give them access to a grid for purposes of eliciting exchange or comparison grids (but not access to the directory itelf).

When further grids are elicited in this way they are stored in your directory automatically without your clients having to take any further action.

Your access to your directory also provides you with a convenient interface for downloading and analysing the grid data thus collected.

### Registering a cache directory

Cache directory registration on this server is freely available. We ask when you register that you provide some contact details so that we may inform you of any significant changes in WebGrid.

We also suggest that you join the PCP Tools mailing list which is a low-traffic list through which users are kept in touch with developments in WebGrid and other PCP tools. The web site for the list, its archives and facilities for joining are at http://www.jiscmail.ac.uk/lists/pcptools.html.

### Accessing your cache directory

When you register your directory WebGrid will give you a unique cache directory identifier that you can use to cache a grid and to access your cache.

If you type your cache directory identifier into the box provided, the
button can be used to cache a grid in your directory, and the
button to access the directory.

The first time you do this in a particular browser session the user name and password you have specified will be requested, but for the remainder of that session your browser will usually retain this information for you (unless you log in to a different password-protected system).

## ALWAYS SAVE YOUR DATA LOCALLY

Even if you use the cache, always also make your own copy of a grid which is important to you since we do not guarantee the security of your data on our server, and take no responsibility or liability for it.