IOZONE VirtualBox testing on CentOS 6.7 via the Phoronix Test Suite. vmware-nested-upgraded: Processor: Intel Core i7-6820HQ @ 2.71GHz (1 Core), Motherboard: Oracle VirtualBox v1.2, Memory: 490MB, Disk: 43GB VBOX HDD OS: CentOS 6.7, Kernel: 2.6.32-573.el6.x86_64 (x86_64), Compiler: GCC 4.4.7 20120313, File-System: ext4, System Layer: VirtualBox IOzone 3.405 Record Size: 1MB - File Size: 8GB - Disk Test: Write Performance MB/s > Higher Is Better vmware-nested-upgraded . 294.11 |============================================== IOzone 3.405 Record Size: 4Kb - File Size: 8GB - Disk Test: Write Performance MB/s > Higher Is Better vmware-nested-upgraded . 293.94 |============================================== IOzone 3.405 Record Size: 64Kb - File Size: 8GB - Disk Test: Write Performance MB/s > Higher Is Better vmware-nested-upgraded . 293.66 |==============================================