Using SCDBackup

1. Purpose:

backup large amounts of data on one or more CDs or DVDs,

simple (therefore no excuse not to do the backup),

no special tool needed for reading the backup

2. How to start using it on the CSB cluster:

Although the software is available from any CSB machine and theoretically can be run on any machine equipped with a CD/DVD writer, we strongly recommend you to use squid - a machine dedicated for different types of backups and data storage. Just login as yourself:

ssh squid

Then if you are going to use scdbackup for the first time, do

cd /export/squid/scdbackup-0.8.8/inst

./ADD_USER

Now you are ready to use scdbackup or sdvsdbackup, or the other versions shown

below (they all should be in your PATH environment). Just follow the instructions

of the script and insert the cd/dvd when prompted.

3. Commands for CD:

scdbackup_home ... backup of the user's $HOME directory. ISO9660

scdbackup ........ command for defining own backup collections and for

spontaneous data copies. ISO9660. Example:

scdbackup /home /home2=/usr/home -not /home/guest

Backup /home and /usr/home . But use /home2 on CD as

name for /usr/home and omit subdir /home/guest

scdbackup_afio ... like scdbackup but with afio archives rather than ISO9660.

This may also produce star-Archives.

scdbackup_sys .... backup of system directories as afio archives (or star)

scdbackup_verify . test a resulting CD for correct readability

scdbackup_blank .. blank a CD-RW to make it writable again

scdbackup_askme .. read an info script from the backup media and perform

search operations much faster than the script could do

scdbackup_clear .. release all locks (in case one has survived the end

of a script).

4. Sdvdbackup

For DVD according commands are available. They all begin with "sdvdbackup" :

sdvdbackup_home, sdvdbackup, sdvdbackup_afio, sdvdbackup_sys,

sdvdbackup_verify, sdvdbackup_blank, sdvdbackup_askme, sdvdbackup_clear

5. Formats:

ISO9660 file systems (readable after : mount )

afio archives (readable by : afio ... /dev/cdrom )

star archives (readable by : star ... </dev/cdrom )

6. Where to find more information:

/export/squid/scdbackup-0.8.8/README

http://scdbackup.webframe.org scdbackup@gmx.net Thomas Schmitt

http://scdbackup.sourceforge.net