Where is the data stored by SY hosted? Franck February 28, 2019 06:21 Updated Follow All SY data is hosted in France in the CEGEDIM Data Centre. Comments 0 comments Article is closed for comments. Related articles I no longer want to use the SY portal. How can I implement reversibility to recover my bills? What is SY archival? How long are invoices stored on SY? Does SY offer an electronic safe? How do I send my invoice by email?