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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 sourceforge site, and the file docs/KERBEROS in this package, for more details. * Supports secure communication between server and client using OpenSSH. * Can encrypt dumps on Amanda client or on Amanda client using GPG or any encryption program. * 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 or custom program. * 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. 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 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 GNU/Linux on x86, m68k, alpha, sparc, arm and powerpc Mac OS X 10 NetBSD 1.0 Nextstep 3 (*) OpenBSD 2.5 x86, sparc, etc (ports available) SunOS 4.1.x (x >= 1) and 5. Ultrix 4.2 HP-UX 9.x and 10.x (x >= 01) The Amanda server side is known to run on all of the other machines except on those marked with an asterisk. WHERE DO I GET AMANDA? ---------------------- Amanda is a sourceforge.net project (http://sourceforge.net/projects/amanda). Amanda source tree is available at the sourceforge website. Most Linux distributions include amanda rpms pre-built for various architectures. 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/NEWS details new features in each release. You can read Amanda documentation at the official project-site http://www.amanda.org and at the AMANDA-Wiki at http://wiki.zmanda.com and WHO DO I TALK TO IF I HAVE A PROBLEM? ------------------------------------- You can get Amanda help and questions answered from the mailing lists and Amanda forums: ==> To join a mailing list, DO NOT, EVER, send mail to that list. Send mail to <listname>-email@example.com, or firstname.lastname@example.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 email@example.com. amanda-users The amanda-users mailing list is for questions and general discussion about the Amanda Network Backup Manager. 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 firstname.lastname@example.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 email@example.com. ==> Amanda forums: http://forums.zmanda.com Share and Enjoy, The Amanda Development Team