Hello Sia,
SAP Product Safety has default storage of MSDS and label via DMS, all report shipping, Report template, labels, MSDS and other reports from EHS are stored in SAP DMS, SAP is also flexible of using content server either SAP or third party but the front end use of DMS for Product Safety can not be or should not be avoided. DMS does allow to link document to share point or other stored location but this may not be function of Product safety as oppose to a DMS function.
Hope this helps.
Gopi Dadheech