/dev/rdsk,/dev/md/dsk和/dev/dsk下的硬盘信息有啥区别？

RT,给出实例如下：
cupd25k@/dev/dsk $ ls -lrt|more     
total 4464
lrwxrwxrwx   1 root     root          49 Apr 19  2007 c0t8d0s0 -> ../../devices/pci@7d,700000/pci@1/scsi@2/sd@8,0:a
lrwxrwxrwx   1 root     root          49 Apr 19  2007 c0t8d0s1 -> ../../devices/pci@7d,700000/pci@1/scsi@2/sd@8,0:b
lrwxrwxrwx   1 root     root          49 Apr 19  2007 c0t8d0s2 -> ../../devices/pci@7d,700000/pci@1/scsi@2/sd@8,0:c
lrwxrwxrwx   1 root     root          49 Apr 19  2007 c0t8d0s3 -> ../../devices/pci@7d,700000/pci@1/scsi@2/sd@8,0:d
lrwxrwxrwx   1 root     root          49 Apr 19  2007 c0t8d0s4 -> ../../devices/pci@7d,700000/pci@1/scsi@2/sd@8,0:e
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s0 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:a
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s1 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:b
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s2 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:c
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s3 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:d
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s4 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:e
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s5 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:f


cupd25k@/dev/rdsk $ ls -lrt|more
total 4464
lrwxrwxrwx   1 root     root          49 Apr 19  2007 c0t8d0s0 -> ../../devices/pci@7d,700000/pci@1/scsi@2/sd@8,0:a
lrwxrwxrwx   1 root     root          49 Apr 19  2007 c0t8d0s1 -> ../../devices/pci@7d,700000/pci@1/scsi@2/sd@8,0:b
lrwxrwxrwx   1 root     root          49 Apr 19  2007 c0t8d0s2 -> ../../devices/pci@7d,700000/pci@1/scsi@2/sd@8,0:c
lrwxrwxrwx   1 root     root          49 Apr 19  2007 c0t8d0s3 -> ../../devices/pci@7d,700000/pci@1/scsi@2/sd@8,0:d
lrwxrwxrwx   1 root     root          49 Apr 19  2007 c0t8d0s4 -> ../../devices/pci@7d,700000/pci@1/scsi@2/sd@8,0:e
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s0 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:a
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s1 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:b
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s2 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:c
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s3 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:d
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s4 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:e
lrwxrwxrwx   1 root     root          63 Apr 23  2007 c7t60060E80045B210000005B2100000044d0s5 -> ../../devices/scsi_vhci/ssd@g60060e
80045b210000005b2100000044:f


cupd25k@/dev/md/dsk $ ls -lrt
total 48
lrwxrwxrwx   1 root     root          36 Apr 23  2007 d0 -> ../../../devices/pseudo/md@0:0,0,blk
lrwxrwxrwx   1 root     root          36 Apr 23  2007 d2 -> ../../../devices/pseudo/md@0:0,2,blk
lrwxrwxrwx   1 root     root          36 Apr 23  2007 d3 -> ../../../devices/pseudo/md@0:0,3,blk
lrwxrwxrwx   1 root     root          36 Apr 23  2007 d5 -> ../../../devices/pseudo/md@0:0,5,blk
lrwxrwxrwx   1 root     root          36 Apr 23  2007 d6 -> ../../../devices/pseudo/md@0:0,6,blk
lrwxrwxrwx   1 root     root          36 Apr 23  2007 d8 -> ../../../devices/pseudo/md@0:0,8,blk
lrwxrwxrwx   1 root     root          36 Apr 23  2007 d9 -> ../../../devices/pseudo/md@0:0,9,blk
lrwxrwxrwx   1 root     root          37 Apr 23  2007 d11 -> ../../../devices/pseudo/md@0:0,11,blk
lrwxrwxrwx   1 root     root          37 Apr 25  2007 d24 -> ../../../devices/pseudo/md@0:0,24,blk
lrwxrwxrwx   1 root     root          37 Apr 25  2007 d25 -> ../../../devices/pseudo/md@0:0,25,blk
lrwxrwxrwx   1 root     root          37 Apr 25  2007 d26 -> ../../../devices/pseudo/md@0:0,26,blk

有哪位大哥给指点下？