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White space fix only. Translators can ignore.

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Dru Lavigne 2014-04-09 18:20:06 +00:00
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commit b4b641ad5d
Notes: svn2git 2020-12-08 03:00:23 +00:00 
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en_US.ISO8859-1/books/handbook/disks/chapter.xml
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@ -1926,38 +1926,38 @@ cd0: Attempt to query device size failed: NOT READY, Medium not present - tray c
</example>
</sect2>
<sect2 xml:id="backups-tapebackups">
<title>Using Data Tapes for Backups</title>
<sect2 xml:id="backups-tapebackups">
<title>Using Data Tapes for Backups</title>
<indexterm><primary>tape media</primary></indexterm>
<indexterm><primary>tape media</primary></indexterm>
<para>While tape technology has continued to evolve,
modern backup systems tend to combine
off-site backups with local removable media.
&os; supports any tape drive that
uses <acronym>SCSI</acronym>, such as <acronym>LTO</acronym> or
<acronym>DAT</acronym>. There is limited support for <acronym>SATA</acronym>
and <acronym>USB</acronym> tape drives.</para>
<para>While tape technology has continued to evolve, modern
backup systems tend to combine off-site backups with local
removable media. &os; supports any tape drive that uses
<acronym>SCSI</acronym>, such as <acronym>LTO</acronym> or
<acronym>DAT</acronym>. There is limited support for
<acronym>SATA</acronym> and <acronym>USB</acronym> tape
drives.</para>
<para>For <acronym>SCSI</acronym> tape devices, &os; uses the &man.sa.4; driver and the
<filename>/dev/sa0</filename>, <filename>/dev/nsa0</filename>,
and <filename>/dev/esa0</filename> devices. The physical device name is
<filename>/dev/sa0</filename>. When
<filename>/dev/nsa0</filename> is used, the backup application will
not rewind the
tape after writing a file, which allows writing more than one
file to a tape. Using <filename>/dev/esa0</filename>
ejects the tape after the device is closed.</para>
<para>For <acronym>SCSI</acronym> tape devices, &os; uses the
&man.sa.4; driver and the <filename>/dev/sa0</filename>,
<filename>/dev/nsa0</filename>, and
<filename>/dev/esa0</filename> devices. The physical device
name is <filename>/dev/sa0</filename>. When
<filename>/dev/nsa0</filename> is used, the backup application
will not rewind the tape after writing a file, which allows
writing more than one file to a tape. Using
<filename>/dev/esa0</filename> ejects the tape after the
device is closed.</para>
<para>In &os;, <command>mt</command> is used to control
operations of the tape drive, such as seeking through files on
a tape or writing tape control marks to the tape. For
example, the first three files on a tape can be
preserved by skipping past them before writing a new
file:</para>
example, the first three files on a tape can be preserved by
skipping past them before writing a new file:</para>
<screen>&prompt.root; <userinput>mt -f /dev/nsa0 fsf 3</userinput></screen>
<para>This utility supports many operations. Refer to
&man.mt.1; for details.</para>
@ -1967,8 +1967,8 @@ cd0: Attempt to query device size failed: NOT READY, Medium not present - tray c
<screen>&prompt.root; <userinput>tar cvf /dev/sa0 <replaceable>file</replaceable></userinput></screen>
<para>To recovering files from a <command>tar</command> archive on tape into
the current directory:</para>
<para>To recovering files from a <command>tar</command> archive
on tape into the current directory:</para>
<screen>&prompt.root; <userinput>tar xvf /dev/sa0</userinput></screen>
@ -1979,12 +1979,13 @@ cd0: Attempt to query device size failed: NOT READY, Medium not present - tray c
<screen>&prompt.root; <userinput>dump -0aL -b64 -f /dev/nsa0 /usr</userinput></screen>
<para>To interactively restore files from a <command>dump</command> file on
tape into the current directory:</para>
<para>To interactively restore files from a
<command>dump</command> file on tape into the current
directory:</para>
<screen>&prompt.root; <userinput>restore -i -f /dev/nsa0</userinput></screen>
</sect2>
</sect2>
<sect2 xml:id="backups-programs-amanda">
<title>Third-Party Backup Utilities</title>
@ -1994,11 +1995,10 @@ cd0: Attempt to query device size failed: NOT READY, Medium not present - tray c
<para>The &os; Ports Collection provides many third-party
utilities which can be used to schedule the creation of
backups, simplify tape backup, and make
backups easier and more convenient.
Many of these applications are client/server based
and can be used to automate the backups of a single system or
all of the computers in a network.</para>
backups, simplify tape backup, and make backups easier and
more convenient. Many of these applications are client/server
based and can be used to automate the backups of a single
system or all of the computers in a network.</para>
<para>Popular utilities include
<application>Amanda</application>,