DSI(redirected from Days' sales in inventory ratio)
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DSI(1) (DSi) A handheld game console from Nintendo (the Nintendo DSi). Introduced in 2008, it superseded the Nintendo DS.
(2) (Dynamic Systems Initiative) A collection of Microsoft products for managing Windows in large enterprises. Introduced in 2003, Microsoft Operations Manager (MOM) and Systems Management Server (SMS) were two of the components under the DSI umbrella. See MOM and SMS.