io centos KVM VirtualBox testing on CentOS Linux 7 via the Phoronix Test Suite. VBOX HDD: Processor: Intel Core i5-2520M @ 2.49GHz (2 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX- 82441FX PMC, Memory: 4096MB, Disk: 9GB VBOX HDD, Graphics: InnoTek VirtualBox, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM Gigabit OS: CentOS Linux 7, Kernel: 3.10.0-693.5.2.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, System Layer: KVM VirtualBox Threaded I/O Tester 20170503 Test: Write - Size Per Thread: 32MB - Thread Count: 4 MB/s > Higher Is Better VBOX HDD . 5.33 |==============================================================