单选题A customer is cost-justifying advanced software functions of several disk subsystem vendors.Which of the following software features of the Storwize V7000 are provided at no charge?（）A
Easy Tier, FlashCopy, Thin Provisioning B
Easy Tier, External Virtu
题目
单选题
A customer is cost-justifying advanced software functions of several disk subsystem vendors.Which of the following software features of the Storwize V7000 are provided at no charge?（）
A
Easy Tier, FlashCopy, Thin Provisioning
B
Easy Tier, External Virtualization, FlashCopy
C
Easy Tier, Metro/Global Mirror, Thin Provisioning
D
Metro/Global Mirror, FlashCopy, External Virtualization
