Each SAS storage shelf stack can contain up to 10 shelves with the following exceptions:
- FAS2040, which is limited to 4 shelves per stack
- DS4486 disk shelves which are limited to 5 per stack
The 10-shelf limit applies only to the number of storage shelves in a stack, and is not a system limit, because systems can contain multiple stacks.
If a single stack in the system contains more than 10 disk shelves, the following alert will be presented in EMS:
<node_name>: dsa_disc: ses.config.shelfPopError:critical]: Disk shelf population on channel <XX> is ##. Reduce the number of disk shelves on this channel to 10 or fewer.