Virtual CloudArray licences

Hi Team,

i know that CloudArray is another topic not related to the CTA but i can not find it any more as it is kind of an old solution that ran out of support already. 

i am working on a replacement project for the current CloudArray (CA) and we need to purchase vCA licences for performing its migration.

How to purchase these Temp Licences and for how long they could be valid as the migration might take a long time.

any kind of internal references will be so supportive, that is really urgent.

Thanks for your support in advance  

Christine Phelopos