请问这是一块硬盘还是2块硬盘？

[weixin_38048397]

# format
Searching for disks...done


AVAILABLE DISK SELECTIONS:
       0. c0t0d0 <drive type unknown>
          /pci@1f,0/ide@d/dad@0,0
Specify disk (enter its number): 0
-----------------------------------------------------------------------

# # # ls dsk
# c0t0d0s0  c0t0d0s2  c0t0d0s4  c0t0d0s6  c0t1d0s0  c0t1d0s2  c0t1d0s4  c0t1d0s6
c0t0d0s0: not found
# c0t0d0s1  c0t0d0s3  c0t0d0s5  c0t0d0s7  c0t1d0s1  c0t1d0s3  c0t1d0s5  c0t1d0s7
# ls rdsk
c0t0d0s0  c0t0d0s2  c0t0d0s4  c0t0d0s6  c0t1d0s0  c0t1d0s2  c0t1d0s4  c0t1d0s6
c0t0d0s1  c0t0d0s3  c0t0d0s5  c0t0d0s7  c0t1d0s1  c0t1d0s3  c0t1d0s5  c0t1d0s7



另外请高人指点一下，c0t0d0s0中 ctds都代表什么意思   多谢谢了！（我在网上查的C:controller number  T:target number  D:disknumber  S:slice number 可是还是不太明白）