In the forged holorecording created by Grathon Tolar in 2374, the planned Dominion invasion of Romulan space began with the advance of the 23rd Jem'Hadar Division through the Glintara sector, with the Cardassian Fourth Order protecting their flanks. The holographic Weyoun predicted that the Division would land on Romulus the following day. (DS9: "In the Pale Moonlight")
According to the Star Trek: Star Charts, on page 66, this sector, also known as Sector 031, was located in the Beta Quadrant. It was located adjacent to the Tarod Sector (Sector 030). The Glintara Sectar was named after the star system Glintara.