ipad - Where are OpenGL textures stored on iOS? -

where textures stored in opengl es 2 ipad application? how can determine device capabilities storing textures? thought textures stored in ram, following code runs fine instead of causing overflow:

for(int i=0; i<3000; i++){ //generate textures , see when space run out         gluint texture;         glgentextures(1, &texture);         glbindtexture(gl_texture_2d, texture);         glteximage2d(gl_texture_2d, 0, gl_rgba,  768, 1024, 0, gl_rgba, gl_unsigned_byte, null);         nslog(@"%i",glgeterror()); } 

am creating these textures wrong way or ipad capable of doing this?

textures stored in server space. thus, driver optimizes empty buffers , doesn't create them until need put data inside.

ipad not capable of storing 225gib of textures. :)

edit: glaretexturesresident deprecated already. not aware of replacements it.