To add a column to a secondary tier of a file system

• To add a column to a secondary tier of a file system, enter the following:

  Storage> tier addcolumn fs_name ncolumns pool_or_disk_name

  fs_name	Specifies the file system for which you want to add a column to a secondary tier of the file system.
  ncolumn	Specifies the number of columns that you want to add to the secondary tier of the file system. Note: In the case of striped file systems, the number of disks that are specified should be equal to the number of columns (ncolumns). Note: In the case of mirrored-striped and striped-mirrored file systems, the disks that are specified should be equal to (ncolumns * number_of_mirrors_in_fs).
  pool_or_disk_name	Specifies the pool or the disk name for the tiered file system.

  For example, to add two columns to the secondary tier of file system fs1, enter the following:

  Storage> tier addcolumn fs1 2 pool3

To remove a column from a secondary tier of a file system

• To remove a column from a secondary tier of a file system, enter the following:

  Storage> tier rmcolumn fs_name

  where fs_name is the name of the tiered file system, the secondary tier of which you want to remove the column from.

  For example:

  Storage> tier rmcolumn fs1