I-Tech YMBAO100, User Manual

Page: 48 / 51

Appendix
41
L. SATA (hard disk) Test
Insert the hard disk then assure it is in IBR117 device list.
Note: This operation may damage the data stored in the hard disk. Before
starting the test, make sure there is no critical data in the hard disk
being used.
•
Reading & writing test
HD_DIR="/run/media/mmcblk1p1"
#create data file
dd if=/dev/urandom of=/var/data1 bs=1024k count=100
#write data to hard disk
dd if=/var/data1 of=$ HD_DIR/data2 bs=1024k count=100
#read data2, and compare with data1
cmp $HD_DIR/data2 /var/data1
•
Hard disk speed test
HD_DIR="/run/media/mmcblk1p1"
# hard disk write speed
dd if=/dev/zero of=$HD_DIR/$i/test bs=1M count=1000 oflag=nocache
# hard disk read speed
dd if=$HD_DIR/$i/test of=/dev/null bs=1M oflag=nocache