A customer has the following non-virtualized servers： - three Exchange servers， each with 2.8 TB database - five System i Domino servers， each with 2 TB database - 20 TB usable capacitySun/SAP cluster - 70 TB usable capacity of System p requirement - annual growth rate of 12 TB usable capacity per year What is the most cost-effective solution for three years（）
- AIBM System Storage DS5020 with 300 GB drives
- BIBM System Storage DS5300 with 300 GB drives
- CIBM System Storage DS8700 with 300 GB drives
- DIBM System Storage DS5020 with 1 TB SATA drive