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Great NAS but we are a MAC environment but its DSM operating system doesn't work for Macs as well as it does for PCs. The main issue is that remote on-demand file access NOT available for Macs - only Windows. That means you can't access files WHEN you want them. You need to keep full copy of them on your local device, which defeats the purpose of having a NAS.
Synology doesn't mention this limitation in its marketing. It's buried as a footnote, if you dig deep enough. Supposedly version 7 of DSM will resolve that but people have been waiting years for it so not sure it will ever happen. Meanwhile Macs have to access files only via a web-interface from offsite locations..