fio fio fio: Processor: 2 x Intel Xeon E5-2640 v4 @ 3.40GHz (40 Cores), Motherboard: Inspur YZMB-00326-101, Chipset: Intel Xeon E7 v4/Xeon, Memory: 3.9375 x 32768 MB DDR4-2133MHz Hynix, Disk: 2 x 2048GB Micron_1100_MTFD + 24000GB Logical Volume, Graphics: ASPEED ASPEED Family, Network: Intel I350 Gigabit Connection OS: CentOS Linux 7, Kernel: 3.10.0-693.2.2.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768 Flexible IO Tester 2.1.13 Type: Sequential Write - IO Engine: POSIX AIO - Buffered: Yes - Direct: No - Block Size: 4KB - Disk Target: /data MB/s > Higher Is Better fio . 496.55 |================================================================= Flexible IO Tester 2.1.13 Type: Sequential Write - IO Engine: POSIX AIO - Buffered: Yes - Direct: No - Block Size: 4KB - Disk Target: /data IOPS > Higher Is Better fio . 124134 |=================================================================