if 17h x 60m : 1020m active daily. monthly "after delete" --- par15s : 1020*4=4080 *50=204.0MB 6.324GB -3570 (12.5%) 25MB/d 775/m par30s : 1020*2=2040 *50=104.0MB 3.162GB -1530 (25.0%) 25MB/d 775/m par60s : 1020 *50= 50.2MB 1.581GB -510 (50.0%) 25MB/d 775/m --- then CD-R 1 / month delete same files daily, delete black out files daily. 500files daily hist files is better to save to CD-R. ...can i make daily delete task automaticaly. and thumbs-nail html generate automaticaly. if i have more time.