Oct  5 12:02:24 nas kernel: umass1: <Western Digital External HDD, class 0/0, rev 2.00/1.05, addr 4> on usbus4
Oct  5 12:02:24 nas root: Unknown USB device: vendor 0x1058 product 0x0704 bus uhub4
Oct  5 12:02:26 nas kernel: da1 at umass-sim1 bus 1 scbus6 target 0 lun 0
Oct  5 12:02:26 nas kernel: da1: <WD 3200BEV External 1.05> Fixed Direct Access SCSI-4 device 
Oct  5 12:02:26 nas kernel: da1: 40.000MB/s transfers
Oct  5 12:02:26 nas kernel: da1: 305245MB (625142448 512 byte sectors: 255H 63S/T 38913C)
^C
[root@nas] ~# mount -t ntfs /dev/da1 /media/
Failed to startup volume: Invalid argument.
Failed to mount '/dev/da1': Invalid argument.
The device '/dev/da1' doesn't have a valid NTFS.
Maybe you selected the wrong device? Or the whole disk instead of a
partition (e.g. /dev/hda, not /dev/hda1)? Or the other way around?
Mount failed.