Requirements for adding a disk shelf

Reasons to add a disk shelf

If you run out of disk space, you can add disk shelves to your cluster. One FC-AL interface can connect up to a maximum of eight daisy-chained disk shelves (four for DS14 disk shelves) per FC-AL adapter. You must add an additional FC-AL adapter to each of your filers for every set of eight disk shelves you add, up to the maximum of FC-AL adapters supported by your filer. See the F800 Series Field Service Guide for FC-AL installation information.

See the NOW Web page at http://now.netapp.com for the maximum number of FC-AL adapters your filer supports.

Required tools and manuals

You must have the following cables and components for each disk shelf added:

Two shelf-to-shelf cables; one each for the Channel A and Channel B loops
Two power cords
Two power outlets, on separate circuits if possible
The F800 Series Field Service Guide for FC-AL installation instructions
The appropriate Fibre Channel disk shelf guide

Restrictions for adding new disk shelves

The following table lists the restrictions you need to be aware of when adding new disk shelves to your existing cluster.

If your cluster has...	And you are adding...	Then...
FC7 or FC8 disk shelves	FC9 disk shelves in the same loop	Disk shelf 0 must be an FC7 disk shelf
FC7, FC8, or FC9 disk shelves	DS14 disk shelves	The DS14 must be the last disk shelf
DS14 or mixed disk shelves with DS14 disk shelves	Hot adding a disk shelf	You can only hot add a DS14 disk shelf to an existing DS14 disk shelf The DS14 must be the last disk shelf