183 lines
8 KiB
Text
183 lines
8 KiB
Text
Please note that this is a package of a developement snapshot of the 2.4.3
|
|
branch.
|
|
|
|
Amanda, The Advanced Maryland Automatic Network Disk Archiver
|
|
Copyright (c) 1991-1998 University of Maryland at College Park
|
|
All Rights Reserved.
|
|
|
|
See the files COPYRIGHT, COPYRIGHT-REGEX and COPYRIGHT-APACHE for
|
|
distribution conditions and official warranty disclaimer.
|
|
|
|
PLEASE NOTE: THIS SOFTWARE IS BEING MADE AVAILABLE ``AS-IS''. UMD is making
|
|
this work available so that other people can use it. This software is in
|
|
production use at our home site - the UMCP Department of Computer Science -
|
|
but we make no warranties that it will work for you. Amanda development is
|
|
unfunded - the development team maintains the code in their spare time. As a
|
|
result, there is no support available other than users helping each other on
|
|
the Amanda mailing lists. See below for information on the mailing lists.
|
|
|
|
|
|
WHAT IS AMANDA?
|
|
---------------
|
|
|
|
This is a release of Amanda, the Advanced Maryland Automatic
|
|
Network Disk Archiver. Amanda is a backup system designed to archive many
|
|
computers on a network to a single large-capacity tape drive.
|
|
|
|
Here are some features of Amanda:
|
|
|
|
* written in C, freely distributable.
|
|
* built on top of standard backup software: Unix dump/restore, GNU Tar
|
|
and others.
|
|
* will back up multiple machines in parallel to a holding disk, blasting
|
|
finished dumps one by one to tape as fast as we can write files to
|
|
tape. For example, a ~2 Gb 8mm tape on a ~240K/s interface to a host
|
|
with a large holding disk can be filled by Amanda in under 4 hours.
|
|
* does simple tape management: will not overwrite the wrong tape.
|
|
* supports tape changers via a generic interface. Easily customizable to
|
|
any type of tape carousel, robot, or stacker that can be controlled via
|
|
the unix command line.
|
|
* supports Kerberos 4 security, including encrypted dumps. The Kerberos
|
|
support is available as a separate add-on package, see the file
|
|
KERBEROS.HOW-TO-GET on the ftp site, and the file docs/KERBEROS in this
|
|
package, for more details.
|
|
* for a restore, tells you what tapes you need, and finds the proper
|
|
backup image on the tape for you.
|
|
* recovers gracefully from errors, including down or hung machines.
|
|
* reports results, including all errors in detail, in email.
|
|
* will dynamically adjust backup schedule to keep within constraints: no
|
|
more juggling by hand when adding disks and computers to network.
|
|
* includes a pre-run checker program, that conducts sanity checks on both
|
|
the tape server host and all the client hosts (in parallel), and will
|
|
send an e-mail report of any problems that could cause the backups to
|
|
fail.
|
|
* can compress dumps before sending or after sending over the net, with
|
|
either compress or gzip.
|
|
* can optionally synchronize with external backups, for those large
|
|
timesharing computers where you want to do full dumps when the system
|
|
is down in single-user mode (since BSD dump is not reliable on active
|
|
filesystems): Amanda will still do your daily dumps.
|
|
* lots of other options; Amanda is very configurable.
|
|
|
|
|
|
WHAT ARE THE SYSTEM REQUIREMENTS FOR AMANDA?
|
|
--------------------------------------------
|
|
|
|
Amanda requires a host that is mostly idle during the time backups are
|
|
done, with a large capacity tape drive (e.g. an EXABYTE, DAT or DLT tape).
|
|
This becomes the "tape server host". All the computers you are going to dump
|
|
are the "backup client hosts". The server host can also be a client host.
|
|
|
|
Amanda works best with one or more large "holding disk" partitions on the
|
|
server host available to it for buffering dumps before writing to tape.
|
|
The holding disk allows Amanda to run backups in parallel to the disk, only
|
|
writing them to tape when the backup is finished. Note that the holding
|
|
disk is not required: without it Amanda will run backups sequentially to
|
|
the tape drive. Running it this way kills the great performance, but still
|
|
allows you to take advantage of Amanda's other features.
|
|
|
|
As a rule of thumb, for best performance the holding disk should be larger
|
|
than the dump output from your largest disk partitions. For example, if
|
|
you are backing up some full gigabyte disks that compress down to 500 MB,
|
|
then you'll want 500 MB on your holding disk. On the other hand, if those
|
|
gigabyte drives are partitioned into 500 MB filesystems, they'll probably
|
|
compress down to 250 MB and you'll only need that much on your holding
|
|
disk. Amanda will perform better with larger holding disks.
|
|
|
|
Actually, Amanda will still work if you have full dumps that are larger
|
|
than the holding disk: Amanda will send those dumps directly to tape one at
|
|
a time. If you have many such dumps you will be limited by the dump speed
|
|
of those machines.
|
|
|
|
Amanda does not yet support single backup images larger than a tape.
|
|
|
|
|
|
WHAT SYSTEMS DOES AMANDA RUN ON?
|
|
--------------------------------
|
|
|
|
Amanda should run on any modern Unix system that supports dump or GNU
|
|
tar, has sockets and inetd, and either system V shared memory, or BSD
|
|
mmap implemented.
|
|
|
|
In particular, Amanda 2.4.0 has been compiled, and the client side tested
|
|
on the following systems:
|
|
AIX 3.2 and 4.1
|
|
BSDI BSD/OS 2.1 and 3.1
|
|
DEC OSF/1 3.2 and 4.0
|
|
FreeBSD 2.2.5
|
|
IRIX 5.2 and 6.3
|
|
Linux/GNU on x86, alpha and sparc
|
|
NetBSD 1.0
|
|
Nextstep 3 (*)
|
|
SunOS 4.1.x (x >= 1) and 5.[56]
|
|
Ultrix 4.2
|
|
HP-UX 9.x and 10.x (x >= 01)
|
|
|
|
The Amanda 2.4.0 server side is known to run on all of the other
|
|
machines except on those marked with an asterisk.
|
|
|
|
If you know of any system that is not listed here on which amanda
|
|
builds successfully, either client&server or client-only, please
|
|
report to amanda-hackers@amanda.org.
|
|
|
|
|
|
WHERE DO I GET AMANDA?
|
|
----------------------
|
|
|
|
There are several versions of Amanda. The latest version at the time
|
|
of this writing is available at:
|
|
|
|
ftp://ftp.amanda.org/pub/amanda
|
|
|
|
|
|
HOW DO I GET AMANDA UP AND RUNNING?
|
|
-----------------------------------
|
|
|
|
Read the file docs/INSTALL. There are a variety of steps, from compiling
|
|
Amanda to installing it on the tape server host and the client machines.
|
|
docs/INSTALL contains general installation instructions.
|
|
docs/SYSTEM.NOTES contains system-specific information.
|
|
docs/FAQ contains answers to frequently asked questions.
|
|
docs/KERBEROS explains installation under Kerberos 4.
|
|
docs/TAPE.CHANGERS explains how to customize the changer interface.
|
|
docs/WHATS.NEW details new features.
|
|
|
|
|
|
WHO DO I TALK TO IF I HAVE A PROBLEM?
|
|
-------------------------------------
|
|
|
|
Amanda is completely unsupported and made available as-is. However,
|
|
you may be able to get useful information in the Amanda mailing lists:
|
|
|
|
==> To join a mailing list, DO NOT, EVER, send mail to that list. Send
|
|
mail to <listname>-request@amanda.org, or amanda-lists@amanda.org,
|
|
with the following line in the body of the message:
|
|
subscribe <listname> <your-email-address>
|
|
|
|
|
|
amanda-announce
|
|
The amanda-announce mailing list is for important announcements
|
|
related to the Amanda Network Backup Manager package, including new
|
|
versions, contributions, and fixes. NOTE: the amanda-users list is
|
|
itself on the amanda-announce distribution, so you only need to
|
|
subscribe to one of the two lists, not both.
|
|
To subscribe, send a message to amanda-announce-request@amanda.org.
|
|
|
|
amanda-users
|
|
The amanda-users mailing list is for questions and general discussion
|
|
about the Amanda Network Backup Manager. This package and related
|
|
files are available via anonymous FTP from ftp.amanda.org in the
|
|
pub/amanda directory. NOTE: the amanda-users list is itself on the
|
|
amanda-announce distribution, so you only need to subscribe to one of
|
|
the two lists, not both.
|
|
To subscribe, send a message to amanda-users-request@amanda.org.
|
|
|
|
amanda-hackers
|
|
The amanda-hackers mailing list is for discussion of the
|
|
technical details of the Amanda package, including extensions,
|
|
ports, bugs, fixes, and alpha testing of new versions.
|
|
To subscribe, send a message to amanda-hackers-request@amanda.org.
|
|
|
|
|
|
Share and Enjoy,
|
|
The Amanda Development Team
|