Does the eSATA port of Synology products support eSATA disk enclosures with port multipliers?

All Synology products do not support eSATA disk enclosures with port multipliers. The installed drives on eSATA disk enclosures with port multipliers may not be recognized by Synology products. If you would like to use external disk enclosures with multiple drives, we recommend you to use Synology Expansion Units. Please see the compatibility list here for more information.

Which Synology DiskStation RackStation can I use with Synology Expansion Units

eSATA Expansion Unit Support

NAS Model	DX517	DX513/DX213	DX510	RX418	RX415	RX410	Notes
DS1823xs+	yes
DS1821+	yes
DS1819+	yes
DS1817+	yes	yes
DS1817	yes
DS1815+	yes	yes					See note 1
DS1813+		yes	yes				See note 1
DS1812+		yes	yes				See note 1
DS1621xs+	yes
DS1621+	yes
DS1618+	yes
DS1522+	yes
DS1520+	yes
DS1517+	yes	yes
DS1517	yes
DS1515+	yes	yes					See note 1
DS1515	yes	yes
DS1513+		yes	yes				See note 1
DS1512+		yes	yes				See note 1
DS1511+		yes	yes				See note 1
DS1019+	yes
DS1010+		yes	yes				See note 1
DS923+	yes
DS920+	yes
DS918+	yes
DS916+	yes	yes					See note 1
DS723+	yes
DS720+	yes
DS718+	yes
DS716+II	yes	yes
DS716+	yes	yes
DS715		yes
DS713+		yes	yes				See note 1
DS712+		yes	yes				See note 1
DS710+		yes	yes				See note 1
DS415+	yes	yes					See note 1
DS413		yes					See note 1
DS412+		yes					See note 1
DS218+	yes						See note 1
DS216+II	yes	yes					See note 1
DS216+	yes	yes					See note 1
DS215+		yes					See note 1
DS214play		yes					See note 1
DS214+		yes					See note 1
DS213+		yes					See note 1
DS212+		yes					See note 1
DS115		yes					See note 1
DS114		yes					See note 1
DS112+		yes					See note 1
DS112		yes					See note 1
RS1221(RP)+				yes
RS1219+				yes
RS822(RP)+				yes
RS820(RP)+				yes
RS819				yes
RS818(RP)+				yes	yes
RS816				yes	yes
RS815(RP)+				yes	yes
RS815				yes	yes
RS814(RP)+					yes	yes
RS814					yes	yes
RS812(RP)+					yes	yes
RS812					yes	yes
RS810(RP)+						yes
RS217				yes	yes		See note 1
RS214					yes		See note 1
NVR2165	yes
NVR1218	yes
NVR216		yes
DVA3221	yes
DVA3219	yes

Notes

1. Independent volumes only