WD15EARS on FreeBSD

看硬碟盒子中附的說明寫著 windows 之外的系統之接插上就可以用，不過還是去找了資料，最簡單的應該是用 gpart 吧。

#gpart create -s GPT ad10
ad10 created
#gpart show ad10
=>   34  2930277101  ad10  GPT  (1.4T)
     34  2930277101        - free -  (1.4T)

4k = 512x8，所以接著由 40 開始

#gpart add -b 40 -s 2930277095 -t freebsd-ufs ad10
ad10p1 added
# gpart show ad10
=>   34  2930277101  ad10  GPT  (1.4T)
     34           6        - free -  (3.0K)
     40  2930277095     1  freebsd-ufs  (1.4T)

#newfs -S 4096 -b 32768 -f 4096 -O 2 -U -m 1 -o space /dev/ad10p1

接著測看看速度

#dd if=/dev/zero of=/dev/ad10p1 bs=1m count=8k
8192+0 records in
8192+0 records out
8589934592 bytes transferred in 90.180949 secs (95252209 bytes/sec)

diskinfo 看到的 sectorsize 還是 512

#diskinfo -t /dev/ad10
/dev/ad10
        512             # sectorsize
        1500301910016   # mediasize in bytes (1.4T)
        2930277168      # mediasize in sectors
        2907021         # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.
        WD-WMAVU3127845 # Disk ident.

Seek times:
        Full stroke:      250 iter in   5.759155 sec =   23.037 msec
        Half stroke:      250 iter in   4.177206 sec =   16.709 msec
        Quarter stroke:   500 iter in   7.581140 sec =   15.162 msec
        Short forward:    400 iter in   2.664591 sec =    6.661 msec
        Short backward:   400 iter in   2.181377 sec =    5.453 msec
        Seq outer:       2048 iter in   0.273239 sec =    0.133 msec
        Seq inner:       2048 iter in   0.238800 sec =    0.117 msec
Transfer rates:
        outside:       102400 kbytes in   1.065353 sec =    96118 kbytes/sec
        middle:        102400 kbytes in   1.264815 sec =    80960 kbytes/sec
        inside:        102400 kbytes in   2.177371 sec =    47029 kbytes/sec