Blu-ray and DVD are your best options. This article provides excellent info: http://www.thexlab.com/faqs/opticalmedialongevity.html. http://www.cd-info.com/archiving/longevity/index.html. You should make more than one copy and store the media vertically.
The Siege of Damascus (634) lasted from 21 August to 19 September 634 AD b[âº] before the city fell to the Rashidun Caliphate. Damascus was the first major city of the Byzantine (Roman) empire to fall in the Muslim conquest of Syria.
During the Syrian civil war Moadamiyah was encircled and besieged by pro-government forces from April 2013, and was one of the areas of Damascus hit by a sarin attack on 21 August 2013 (Ghouta chemical attack).