快速DD各种容量测速文件

Linux直接DD就行

 dd if=/dev/zero of=test bs=1M count=1024 conv=fdatasync

  dd if=/dev/zero of=512M.bin bs=1M count=512 conv=fdatasync

dd if=/dev/zero of=256M.bin bs=1M count=256 conv=fdatasync

 dd if=/dev/zero of=128M.bin bs=1M count=128 conv=fdatasync

dd if=/dev/zero of=64M.bin bs=1M count=64 conv=fdatasync

dd if=/dev/zero of=32M.bin bs=1M count=32 conv=fdatasync