IS-H Sizing

Hi,

I am trying to estimate initial sizing for an IS-H Solution.

For disk space requirements, Note 878808 says:

"(1) For a medium hospital (~ 700 beds) we estimate approx. 2-3 GB/year."

I can't understand if this means 2-3 GB/year per bed? per patient? per case?

Will appreciate any help.

Regards