Dell 720N Laptop User Manual


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12-4 Dell PowerVault 720N, 740N, and 760N System Administrator and Command Reference Guide
filer. If you want to back up the filer to a tape drive attached to a SunOS or
Solaris computer, include the filer in the
/.rhosts
file on the computer.
The filer can resolve the name of the computer to which the tape drive is
attached using the information about the computer in the filers
/etc/hosts
file or in the DNS database.
Standard output, provided that you enter the
dump
command through
rsh
.
Because the console is not a standard output device, you cannot write to stan-
dard output if you enter the
dump
command on the console.
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You can specify the level of backup in a
dump
command (dump level), which ranges
from level 0 to level 9. A level 0 backup is a full backup: It writes all data in the dump
path to the backup media. Backups at dump level ranging from level 1 to level 9 are
incremental backups. In an incremental backup, only files changed since the previous
level are written to the backup media.
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You can enter the
dump
command through the console or through
rsh
.
%HQHILWVRI(QWHULQJWKHGXPS&RPPDQG7KURXJKUVK
Entering the
dump
command through
rsh
gives you these benefits:
When the
dump
command is in progress, you can still use the console to man-
age the filer. If the
dump
command entered on the console is backing up a large
number of files, you cannot use the console for a long time.
You can start multiple
dump
commands through
rsh
.
It is less likely to inadvertently terminate the
dump
command. If you enter a
dump
command on the console, it could be terminated by a Ctrl-C entered on a
host connected to the filer using
telnet
.
You can automate filer backups through shell scripts.
You can write data to standard output.
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If you enter the
dump
command on the console, you can read and respond to screen
messages displayed by the command. For example, the command might prompt you
for another tape to complete the backup. A
dump
command entered through
rsh
terminates and does not generate any messages when the command needs user
intervention.
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