Product Information Each Virtual DSM license pack adds one Virtual DSM instance to Virtual Machine Manager. A license supports Virtual DSM upgrades within a three-year period. This license pack cannot be returned once opened. Before purchasing this license pack, check the compatibility of your Synology NAS with Virtual Machine Manager. Learn more about applied models This license pack can only be applied to one Synology product at a time. This license pack can be used to extend the Virtual DSM upgrade support of an existing instance. 19 series: RS1219+ 18 series: FS1018, RS3618xs, RS818RP+, RS818+, RS2818RP+, RS2418RP+, RS2418+, DS3018xs, DS918+, DS718+, DS218+, DS1618+ 17 series: FS3017, FS2017, RS3617xs, RS3617RPxs, RS4017xs+, RS3617xs+, RS18017xs+, DS3617xs, DS1817+, DS1517+ 16 series: RS2416RP+, RS2416+, RS18016xs+, DS916+ 15 series: RS815RP+, RS815+, RC18015xs+, DS3615xs, DS2415+, DS1815+, DS1515+
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