Assuming a customer's initial backup capacity of 1TB, the average daily data increment of 10G, with a backup strategy of once a week for all the equipment once a day from Tuesday toSunday.

All reserve and additional backup data are stored for 4 weeks, regardless of deduplication / redundancy ratio / replication, etc. Calculate the required back-end.

The capacity should not be less than ______. This 1TB is calculated according to 1000G.