Placing an index on a segment

Using a segment to put an index on a specific database device can improve Adaptive Server performance and can give increased control over placement, size, and space usage of database objects. For example:

If you put a table on one device, and its nonclustered indexes on a device on another disk controller, the time required to read or write to the disk can be reduced.
If you put tables and indexes only on specific segments, those objects cannot grow beyond the space available on the devices represented by the segments.
If you put tables and indexes in their own segments that map to reserved devices, other objects cannot contend for space with them.

Select the index icon, then choose File | Properties.
Click the Miscellaneous tab.
From the Segment list, select the name of a segment. This is the segment on which the index puts new data.
Click Apply. Future growth of the index now occurs on this segment.