To calculate the required capacity for snapshots after one week for an HPE Alletra 9000 with the given customer requirements:
* Base volume size: 200TB
* Snapshots frequency: Every hour (24 snapshots per day, 168 per week)
* Daily change rate: 10%
The snapshot capacity can be calculated by considering the daily change rate and the number of snapshots over a week.
Daily change: 10% of 200TB = 20TBTotal change over a week: 20TB * 7 days = 140TB Since there are 168 snapshots (24 per day for 7 days), the total required capacity is 140TB (for the changes) plus the base volume size of 200TB, totaling 480TB.
References:
* HPE Alletra 9000
* HPE Snapshot Management