Become superuser.
Estimate the size of the backup in bytes by using the usfdump S command.
# ufsdump S filesystem |
S |
Displays the estimated number of bytes needed to do the backup. |
Divide the estimated size by the capacity of the tape to see how many tapes you need.
See Table 42-2 for a list of tape capacities.
In this example, the file system of 489,472 bytes will easily fit on a 150-Mbyte tape.
# ufsdump S /export/home 489472 |