This create table command specifies a reservepagegap value of 16:
create table more_titles (
title_id tid,
title varchar(80) not null,
type char(12),
pub_id char(4) null,
price money null,
advance money null,
total_sales int null,
notes varchar(200) null,
pubdate datetime,
contract bit
)
lock datarows
with reservepagegap = 16
Any operation that performs extent allocation on the more_titles table leaves 1 empty page for each 15 filled pages. For partitioned tables, the reservepagegap value applies to all partitions.
The default value for reservepagegap is 0, meaning that no space is reserved.