List the number of ramsan-720 hard drives?
CREATE TABLE table_27615520_1 (storage_medium VARCHAR, product_name VARCHAR)
SELECT COUNT(storage_medium) FROM table_27615520_1 WHERE product_name = "RamSan-720"
### Context: CREATE TABLE table_27615520_1 (storage_medium VARCHAR, product_name VARCHAR) ### Question: List the number of ramsan-720 hard drives? ### Answer: SELECT COUNT(storage_medium) FROM table_27615520_1 WHERE product_name = "RamSan-720"