vStorage (virtual disk) product is a service run above storage systems of enterprise a midrange class (HDS - Hitachi Data Systems).
Data is protected with RAID technology 5/10 and divided into logical units accessible to virtualization hypervisors (they provide maintaining the memory and operating I/O operations) that provide virtualization of the disk system into separate vDisk products. Each type of vDisk product differ in capacity and performance parameters.
Disk capacity is indicated in GB and performance in IOPS (number of disk transactions per second), where performance indication is measured as maximal hourly average. vStorage and vDisk products connect to vServer productes so that they meet the demand of the customer’s particular application operation ensuring particular business service.