os/doc
3
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

Added content to empty handbook section on backups to floppies.

Browse source 
PR:		13605
Submitted by:	Mark Ovens <mark@ukug.uk.freebsd.org>
Reviewed by:	nik
This commit is contained in:
Jim Mock 1999-09-10 00:56:44 +00:00
parent 250a692ba9
commit 415db4a38e
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=5576
2 changed files with 180 additions and 14 deletions
en_US.ISO8859-1/books/handbook/backups
chapter.sgml
en_US.ISO_8859-1/books/handbook/backups
chapter.sgml

97
en_US.ISO8859-1/books/handbook/backups/chapter.sgml
View file

@ -1,7 +1,7 @@
<!--
The FreeBSD Documentation Project
$FreeBSD$
$FreeBSD: doc/en_US.ISO_8859-1/books/handbook/backups/chapter.sgml,v 1.11 1999/09/06 06:52:53 peter Exp $
-->
<chapter id="backups">
@ -30,12 +30,6 @@
remember to specify exactly what version of FreeBSD you are using and
include as many details of your hardware as possible.</para>
<sect1>
<title>* What about backups to floppies?</title>
<para></para>
</sect1>
<sect1 id="backups-tapebackups">
<title>Tape Media</title>
@ -608,6 +602,95 @@ echo "The floppy has been unmounted and is now ready."]]></programlisting>
</sect3>
</sect2>
</sect1>
<sect1 id="backups-floppybackups">
<title>What about backups to floppies?</title>
<sect2 id="floppies-using">
<title>Can I use floppies for backing up my data?</title>
<para>Floppy disks are not really a suitable media for
making backups as:</para>
<itemizedlist>
<listitem>
<para>The media is unreliable, especially over long periods of
time</para>
</listitem>
<listitem>
<para>Backing up and restoring is very slow</para>
</listitem>
<listitem>
<para>They have a very limited capacity (the days of backing up
an entire hard disk onto a dozen or so floppies has long since
passed).</para>
</listitem>
</itemizedlist>
<para>However, if you have no other method of backing up your data then
floppy disks are better than no backup at all.</para>
<para>If you do have to use floppy disks then ensure that you use good
quality ones. Floppies that have been lying around the office for a
couple of years are a bad choice. Ideally use new ones from a
reputable manufacturer.</para>
</sect2>
<sect2 id="floppies-creating">
<title>So how do I backup my data to floppies?</title>
<para>The best way to backup to floppy disk is to use
&man.tar.1; with the <option>-M</option> (multi volume) option, which
allows backups to span multiple floppies.</para>
<para>To backup all the files in the current directory and sub-directory
use this (as root):</para>
<screen>&prompt.root; <userinput>tar Mcvf /dev/rfd0 *</userinput></screen>
<para>When the first floppy is full &man.tar.1; will prompt you to
insert the next volume (because &man.tar.1; is media independent it
refers to volumes. In this context it means floppy disk)</para>
<screen>Prepare volume #2 for /dev/rfd0 and hit return:</screen>
<para>This is repeated (with the volume number incrementing) until all
the specified files have been archived.</para>
</sect2>
<sect2 id="floppies-compress">
<title>Can I compress my backups?</title>
<para>Unfortunately, &man.tar.1; will not allow the
<option>-z</option> option to be used for multi-volume archives.
You could, of course, &man.gzip.1; all the files, &man.tar.1; them to
the floppies, then &man.gunzip.1; the files again!</para>
</sect2>
<sect2 id="floppies-restoring">
<title>How do I restore my backups?</title>
<para>To restore the entire archive use:</para>
<screen>&prompt.root; <userinput>tar Mxvf /dev/rfd0</userinput></screen>
<para>To restore only specific files you can either start with the first
floppy and use:</para>
<screen>&prompt.root; <userinput>tar Mxvf /dev/rfd0 <replaceable>filename</replaceable></userinput></screen>
<para>&man.tar.1; will prompt you to insert subsequent floppies until it
finds the required file.</para>
<para>Alternatively, if you know which floppy the file is on then you
can simply insert that floppy and use the same command as above. Note
that if the first file on the floppy is a continuation from the
previous one then &man.tar.1; will warn you that it cannot restore it,
even if you have not asked it to!</para>
</sect2>
</sect1>
</chapter>
<!--

97
en_US.ISO_8859-1/books/handbook/backups/chapter.sgml
View file

@ -1,7 +1,7 @@
<!--
The FreeBSD Documentation Project
$FreeBSD$
$FreeBSD: doc/en_US.ISO_8859-1/books/handbook/backups/chapter.sgml,v 1.11 1999/09/06 06:52:53 peter Exp $
-->
<chapter id="backups">
@ -30,12 +30,6 @@
remember to specify exactly what version of FreeBSD you are using and
include as many details of your hardware as possible.</para>
<sect1>
<title>* What about backups to floppies?</title>
<para></para>
</sect1>
<sect1 id="backups-tapebackups">
<title>Tape Media</title>
@ -608,6 +602,95 @@ echo "The floppy has been unmounted and is now ready."]]></programlisting>
</sect3>
</sect2>
</sect1>
<sect1 id="backups-floppybackups">
<title>What about backups to floppies?</title>
<sect2 id="floppies-using">
<title>Can I use floppies for backing up my data?</title>
<para>Floppy disks are not really a suitable media for
making backups as:</para>
<itemizedlist>
<listitem>
<para>The media is unreliable, especially over long periods of
time</para>
</listitem>
<listitem>
<para>Backing up and restoring is very slow</para>
</listitem>
<listitem>
<para>They have a very limited capacity (the days of backing up
an entire hard disk onto a dozen or so floppies has long since
passed).</para>
</listitem>
</itemizedlist>
<para>However, if you have no other method of backing up your data then
floppy disks are better than no backup at all.</para>
<para>If you do have to use floppy disks then ensure that you use good
quality ones. Floppies that have been lying around the office for a
couple of years are a bad choice. Ideally use new ones from a
reputable manufacturer.</para>
</sect2>
<sect2 id="floppies-creating">
<title>So how do I backup my data to floppies?</title>
<para>The best way to backup to floppy disk is to use
&man.tar.1; with the <option>-M</option> (multi volume) option, which
allows backups to span multiple floppies.</para>
<para>To backup all the files in the current directory and sub-directory
use this (as root):</para>
<screen>&prompt.root; <userinput>tar Mcvf /dev/rfd0 *</userinput></screen>
<para>When the first floppy is full &man.tar.1; will prompt you to
insert the next volume (because &man.tar.1; is media independent it
refers to volumes. In this context it means floppy disk)</para>
<screen>Prepare volume #2 for /dev/rfd0 and hit return:</screen>
<para>This is repeated (with the volume number incrementing) until all
the specified files have been archived.</para>
</sect2>
<sect2 id="floppies-compress">
<title>Can I compress my backups?</title>
<para>Unfortunately, &man.tar.1; will not allow the
<option>-z</option> option to be used for multi-volume archives.
You could, of course, &man.gzip.1; all the files, &man.tar.1; them to
the floppies, then &man.gunzip.1; the files again!</para>
</sect2>
<sect2 id="floppies-restoring">
<title>How do I restore my backups?</title>
<para>To restore the entire archive use:</para>
<screen>&prompt.root; <userinput>tar Mxvf /dev/rfd0</userinput></screen>
<para>To restore only specific files you can either start with the first
floppy and use:</para>
<screen>&prompt.root; <userinput>tar Mxvf /dev/rfd0 <replaceable>filename</replaceable></userinput></screen>
<para>&man.tar.1; will prompt you to insert subsequent floppies until it
finds the required file.</para>
<para>Alternatively, if you know which floppy the file is on then you
can simply insert that floppy and use the same command as above. Note
that if the first file on the floppy is a continuation from the
previous one then &man.tar.1; will warn you that it cannot restore it,
even if you have not asked it to!</para>
</sect2>
</sect1>
</chapter>
<!--