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Thank you for the reply. Too bad I thought I was going to be able to get a new DSM setup.

Hello Everyone, This is my first post, I just found this community and I'm excited to know I may be able to upgrade my Synology NAS to a newer version. I have a Synology RS409 running DSM 4.2-3259. This unit no longer has any updates from Synology and I was hoping to give it a refresh to a newer version of DSM. I searched around the forums and I couldn't find any instructions on upgrading DSM on official hardware. The main reason I wanted to upgrade is to be able to create a volume bigger than 16TB, I have 4 x 8TB archive drives and I would like to create a Raid5 array which would be approximately a 24TB volume RAW. I'm hoping the newer DSM will allow me to upgrade but if this wont work then I can live with DSM 4.2. Has anyone accomplished this and how were you able to do it. I suspect just downloading a newer PAT file and manually upgrading using a version that is built for another device will not work. I don't have any data to backup and I can reset the unit as needed. thanks.