IoZone mirrored file vdevs
Test IO performance on two mirrors of two preallocated files each:

  pool: tank
 state: ONLINE
  scan: resilvered 120M in 0h0m with 0 errors on Tue Jan  1 19:16:48 2019
config:

        NAME            STATE     READ WRITE CKSUM
        tank            ONLINE       0     0     0
          mirror-0      ONLINE       0     0     0
            /tmp/file5  ONLINE       0     0     0
            /tmp/file6  ONLINE       0     0     0
          mirror-1      ONLINE       0     0     0
            /tmp/file7  ONLINE       0     0     0
            /tmp/file8  ONLINE       0     0     0

errors: No known data errors


IOZONEMIRROREDFILEVDEVS: 

	Processor: Intel Core i5 750 @ 2.66GHz (4 Cores), Motherboard: Gigabyte P55A-UD4, Chipset: Intel Core DMI, Memory: 12288MB, Disk: 2 x 2000GB Western Digital WD20EZRZ-00Z + 2000GB Western Digital WD20EZRZ-22Z + 120GB CT120BX500SSD1 + 3001GB USB 3.0 device, Graphics: MSI NVIDIA GeForce GT 710 2048MB (954/800MHz), Audio: Realtek ALC889, Network: Realtek RTL8111/8168/8411 + Ralink RT2800 802.11n PCI

	OS: neon 18.04, Kernel: 4.15.0-42-generic (x86_64), Desktop: KDE Frameworks 5, Display Driver: NVIDIA 396.54, OpenGL: 4.6.0, Compiler: CUDA 9.1, File-System: ext4, Screen Resolution: 1920x1080


IOzone 3.465
Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance
MB/s > Higher Is Better
IOZONEMIRROREDFILEVDEVS . 113.04 |=============================================