Hello HichamF, I don’t have any SKU# for drives for SCv2020 or SC100 as those are older systems.  Some drives for SCv2020 maybe compatible with an SCv3020. Drives that are for an SC100 are not compatible with SCv3020.
Hi team I've a customer looking to upgrade his current CML Storage with the following :  2x SSD 960Go additional for Dell Compellent SC2020 ( TAG :Removed by Moderator )  2x HDD 4To additional for Dell Compellent extension enclosure ( TAG :Removed by Moderator) Many thanks for your confirmation 
SC2020 & Sc100 SSD and HDD are compatible with which SC products ?