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Amanda

Amanda. Mitch Collinsworth Cornell Center for Materials Research. Intro. Client/Server style backup system Free, open source Runs on most unix. Intro. A backup manager, not a backup program Clients run own native backup programs e.g. dump or GNU tar

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Amanda

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  1. Amanda Mitch Collinsworth Cornell Center for Materials Research

  2. Intro • Client/Server style backup system • Free, open source • Runs on most unix

  3. Intro... • A backup manager, not a backup program • Clients run own native backup programs e.g. dump or GNU tar • Can backup Windows via Samba using GNU tar

  4. Features: standard tools • Tapes written using standard software • Can restore without any special software using standard tools: mt, dd, gzip

  5. Features: efficiency • Dumps to holding disk first, allowing multiple dumps in parallel • Dumps then copied from holding disk to tape, allowing streaming tapes to keep streaming

  6. Features: Planner • Not locked into a specific schedule • Planner phase collects estimates and determines what dump levels to run • If a client is down or hung, note in report and keep going

  7. Features: tape balancing • Balances full dumps throughout dump cycle • Backup runs for about same time each day

  8. Features: tape changers • Changers supported via external interface • Easy to add support for a new device

  9. Features: compression • Client or server • Server: software (gzip) or tape hardware

  10. Features: scales well • Easy to add filesystems to backup list • Easy to add tapes to the tape cycle • Easy interactive restores from any client

  11. Features: fails gracefully • Tape errors don’t stop the show • Dumps continue to holding disk • Flush dumps to tape after correcting the error

  12. Amanda: deficiencies • Windows support (smbtar) currently a kludge • No MacOS support prior to OS X • Multiple tape in a run ok, but one dump image can’t span tapes

  13. Daily mail summary report From tape@ccmr.cornell.edu Mon Feb 5 19:30:58 2001 From: Remote Tape User <tape@ccmr.cornell.edu> To: tape@warf.ccmr.cornell.edu Date: Mon, 5 Feb 2001 04:57:10 -0500 Subject: CCMR AMANDA MAIL REPORT FOR February 5, 2000 These dumps were to tape DailySet133. The next tape Amanda expects to use is: DailySet134. STATISTICS: Total Full Daily -------- -------- -------- Estimate Time (hrs:min) 0:04 Run Time (hrs:min) 1:27 Dump Time (hrs:min) 0:33 0:23 0:09 Output Size (meg) 1743.5 1499.1 244.4 Original Size (meg) 3589.5 3069.7 519.8 Avg Compressed Size (%) 48.6 48.8 47.0 (level:#disks ...) Filesystems Dumped 9 1 8 (1:8) Avg Dump Rate (k/s) 906.6 1090.9 445.3 Tape Time (hrs:min) 1:03 0:53 0:10 Tape Size (meg) 1743.8 1499.1 244.7 Tape Used (%) 41.5 35.7 5.8 (level:#disks ...) Filesystems Taped 9 1 8 (1:8) Avg Tp Write Rate (k/s) 476.0 484.0 432.0

  14. mail report... NOTES: taper: tape DailySet133 kb 1785632 fm 9 [OK] DUMP SUMMARY: DUMPER STATS TAPER STATS HOSTNAME DISK L ORIG-KB OUT-KB COMP% MMM:SS KB/s MMM:SS KB/s ---------------------------------------------------------------------------------------- ----------------------------- azure.ccmr.c /var/a 0 3143340 1535040 48.8 23:27 1090.9 52:52 484.0 holmes.msc.c /var 1 8090 1504 18.6 0:07 208.8 0:06 278.8 jael.msc.cor / 1 96 96 -- 0:16 5.9 0:02 64.1 jael.msc.cor /usr 1 128 128 -- 0:54 2.4 0:04 36.0 jael.msc.cor /var 1 320 320 -- 0:53 6.0 0:04 87.6 lynx.msc.cor /var 1 2970 672 22.6 0:06 117.0 0:03 278.5 mercury.ccmr /var 1 511390 245792 48.1 6:51 598.5 8:38 474.5 quark.msc.co /var 1 4950 704 14.2 0:12 60.2 0:03 212.4 warf.ccmr.co /var 1 4350 1088 25.0 0:03 356.8 0:40 28.0 (brought to you by Amanda version 2.4.2b2)

  15. Amanda: resources • www.amanda.org • Mailing lists • amanda-announce • amanda-users • amanda-hackers

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