Why were indentured servants needed in virginia?

They were needed in Virginia because there was a higher death rate. And because of that there were labor shortages. 

Indentured Servants were necessary in Virginia because there was a high death rate which led to labor shortages therefore with people that wanted to come to America and didn't have the money had someone pay for their journey and they had to sign a contract for four to seven years for those who paid for their journey to America.