What's a good way to scale Amanda for data growth? I've been running this backup scheme for about 8 years. It's finally to the point where the backups are taking longer than 8 hours (we run amverify after the dump) and nobody is around to change the tape when it finally completes. The backups are running spooling from an SSD (/mnt/cache) which is an rsync 'daily.0' from a local archive mount.


Amanda.conf
Code:
inparallel  6           
dumporder "sssS"        
taperalgo first            
displayunit "m"            
netusage  600 Kbps         
dumpcycle 1 week s             
runtapes 1                     
runspercycle 1          
tapecycle 17 tapes


amreport sample
Code:
Hostname: mildred
Org     : mildred
Config  : daily
Date    : April 7, 2018

These dumps were to tape DAY-22.
The next tape Amanda expects to use is: DAY-24.


STATISTICS:
                          Total       Full      Incr.   Level:
                        --------   --------   --------  --------
Estimate Time (hrs:min)     0:29
Run Time (hrs:min)          6:36
Dump Time (hrs:min)         6:06       6:04       0:02
Output Size (meg)       368242.3   368041.2      201.2
Original Size (meg)     565268.6   564582.2      686.3
Avg Compressed Size (%)     65.1       65.2       29.3
DLEs Dumped                   78         66         12  1:12
Avg Dump Rate (k/s)      17170.9    17246.1     1912.3

Tape Time (hrs:min)         6:05       6:04       0:01
Tape Size (meg)         368242.3   368041.2      201.2
Tape Used (%)               63.0       55.7        7.3
DLEs Taped                    78         66         12  1:12
Parts Taped                   78         66         12  1:12
Avg Tp Write Rate (k/s)  17207.3    17263.3     2481.8

USAGE BY TAPE:
  Label               Time         Size      %  DLEs Parts
  DAY-22              6:05      368242M   39.5    78    78

NOTES:
  planner: Full dump of mildred:/backup/include.backups/sql_hourly_dumps promoted from 6 days ahead.
... (need to shorten post)
  planner: Full dump of mildred:/mnt/cache/daily.0/walrus promoted from 6 days ahead.
  planner: Full dump of mildred:/mnt/cache/daily.0/wattwichita promoted from 6 days ahead.
  planner: Full dump of mildred:/mnt/cache/daily.0/enoman promoted from 6 days ahead.
  taper: Slot 1 with label DAY-22 is usable
  taper: tape DAY-22 kb 377080182 fm 78 [OK]
  big estimate: mildred /mnt/cache/daily.0/felt 0
                  est: 4276M    out 3830M


DUMP SUMMARY:
                                                                     DUMPER STATS               TAPER STATS
HOSTNAME     DISK                                     L ORIG-MB  OUT-MB  COMP%  MMM:SS    KB/s MMM:SS    KB/s
------------------------------------------------------- -------------------------------------- --------------
mildred         /backup/include.backups/kent2            1       0       0   10.0    0:01     1.2   0:07     0.0
mildred         /backup/include.backups/sql_hourly_dumps 0  115942  115940  100.0   97:10 20363.1  97:16 20343.2
mildred         /mnt/cache/daily.0/apt                   0    1122     477   42.5    0:39 12515.8   0:35 13960.9
mildred         /mnt/cache/daily.0/mildred               0    6225    2699   43.4    2:54 15849.8   2:52 16065.5
mildred         /mnt/cache/daily.0/badtoad               0   14824   12120   81.8   11:01 18787.1  10:57 18890.8
mildred         /mnt/cache/daily.0/badtoad.bendy         1       8       1    8.2    0:09    76.5   0:05   130.8
mildred         /mnt/cache/daily.0/badtoaddev            0   12931   10392   80.4    9:20 18987.7   9:16 19139.8
mildred         /mnt/cache/daily.0/badtoadinside         0   12699   10081   79.4    9:10 18754.0   9:09 18803.5
mildred         /mnt/cache/daily.0/lark                  0   15781   12183   77.2   11:09 18660.6  11:07 18703.4
mildred         /mnt/cache/daily.0/larggo                0     913     389   42.6    0:27 14712.5   0:31 12853.5
mildred         /mnt/cache/daily.0/cdw                   1      22       1    6.4    0:15    96.0   0:11   130.0
mildred         /mnt/cache/daily.0/kent2                 0    7092    1993   28.1    2:51 11959.1   2:50 12003.5
mildred         /mnt/cache/daily.0/cliff.dmz             0    1544     650   42.1    0:53 12545.4   0:52 12793.0
mildred         /mnt/cache/daily.0/alesmith              0    4671    3215   68.8    2:59 18352.1   3:01 18189.4
mildred         /mnt/cache/daily.0/alesmith.test.myorg   0    4537    2926   64.5    2:44 18262.7   2:44 18267.3
mildred         /mnt/cache/daily.0/coston                1      84      27   31.6    0:11  2486.7   0:08  3403.0
mildred         /mnt/cache/daily.0/inferno               0    1073     500   46.6    0:38 13406.3   0:34 15058.9
mildred         /mnt/cache/daily.0/rodantis              0    6170    3405   55.2    3:44 15553.9   3:44 15564.9
mildred         /mnt/cache/daily.0/desktop.dmz           1      14       1    6.2    0:11    79.8   0:07   129.7
mildred         /mnt/cache/daily.0/desktop.test.myorg    0    5408    2708   50.1    3:04 15098.4   3:03 15153.4
mildred         /mnt/cache/daily.0/litho.dmz             0    1312     709   54.0    0:49 14866.4   0:49 14812.3
mildred         /mnt/cache/daily.0/hershey               0    4946    2730   55.2    2:58 15668.5   2:59 15616.1
mildred         /mnt/cache/daily.0/edison                1     102      33   32.5    0:14  2457.9   0:11  3093.8
mildred         /mnt/cache/daily.0/tower                 0    3220    1590   49.4    2:01 13434.7   2:00 13571.0
mildred         /mnt/cache/daily.0/felt                  0    7755    3830   49.4    3:55 16680.6   3:52 16906.7
mildred         /mnt/cache/daily.0/flappy2               0    4826    2590   53.7    2:35 17121.8   2:34 17223.7
mildred         /mnt/cache/daily.0/flappy2.test.myorg    0    5435    3325   61.2    3:10 17960.4   3:08 18112.7
mildred         /mnt/cache/daily.0/ppatty                0    1649     773   46.9    1:04 12336.5   1:06 11999.2
mildred         /mnt/cache/daily.0/jwino                 0    5991    4731   79.0    4:34 17698.3   4:32 17812.2
mildred         /mnt/cache/daily.0/lemonmist             0    1742     755   43.3    1:00 12894.2   1:01 12668.2
mildred         /mnt/cache/daily.0/pianoman              0   27645    3775   13.7    6:07 10537.4   6:10 10448.5
mildred         /mnt/cache/daily.0/holster               0     897     406   45.3    0:28 15031.4   0:31 13417.9
mildred         /mnt/cache/daily.0/hooper                0    7312    3518   48.1    4:21 13812.6   4:17 14018.6
mildred         /mnt/cache/daily.0/blake.dmz             0    1326     687   51.8    0:49 14297.1   0:50 14067.3
mildred         /mnt/cache/daily.0/chooper               0    5761    3879   67.3    3:53 17060.6   3:51 17194.5
mildred         /mnt/cache/daily.0/jabber                1      69      26   37.9    0:03  8345.8   0:05  5354.8
mildred         /mnt/cache/daily.0/junks                 0    2898    1290   44.5    1:35 13883.5   1:37 13618.5
mildred         /mnt/cache/daily.0/tangroad              0     923     416   45.0    0:28 15231.3   0:32 13298.7
mildred         /mnt/cache/daily.0/kettering             1      88      28   31.7    0:10  2967.5   0:07  4089.1
mildred         /mnt/cache/daily.0/lamer                 0    1442     567   39.3    0:52 11054.3   0:51 11378.3
mildred         /mnt/cache/daily.0/ldap1                 0    6517    1706   26.2    2:11 13318.5   2:11 13338.3
mildred         /mnt/cache/daily.0/ldap1.test.myorg      0    4792    1277   26.7    1:41 12922.2   1:49 12000.2
mildred         /mnt/cache/daily.0/ldap2                 0    1307     513   39.2    0:41 12913.4   0:38 13819.4
mildred         /mnt/cache/daily.0/ldap2.test.myorg      0    1330     521   39.2    0:41 12986.7   0:38 14044.5
mildred         /mnt/cache/daily.0/clist                 0   75201   52018   69.2   56:44 15649.8  56:43 15652.9
mildred         /mnt/cache/daily.0/mail                  1      86      27   31.7    0:10  2703.9   0:07  4005.3
mildred         /mnt/cache/daily.0/mail.test.myorg       0    1599     641   40.1    0:54 12260.8   0:52 12616.3
mildred         /mnt/cache/daily.0/frothaven             0     871     392   45.0    0:31 12745.2   0:30 13375.0
mildred         /mnt/cache/daily.0/toofaststu            0    1193     603   50.5    0:43 14289.6   0:42 14694.7
mildred         /mnt/cache/daily.0/bflow1                0    4118    2469   59.9    2:43 15554.4   2:38 15999.2
mildred         /mnt/cache/daily.0/bflow2                0    4161    2491   59.9    2:45 15428.8   2:42 15743.0
mildred         /mnt/cache/daily.0/maxy1                 1     122      30   24.3    0:08  3590.1   0:05  6043.6
mildred         /mnt/cache/daily.0/maxy2                 0    3916     779   19.9    1:14 10843.1   1:21  9853.1
mildred         /mnt/cache/daily.0/maxy3                 0    3916     779   19.9    1:19 10075.1   1:22  9733.0
mildred         /mnt/cache/daily.0/maxy4                 0    4718     805   17.1    1:22 10022.8   1:26  9588.2
mildred         /mnt/cache/daily.0/bflowpims             0    1167     501   42.9    0:44 11533.6   0:43 11923.9
mildred         /mnt/cache/daily.0/drdonut               0    5978    3030   50.7    3:24 15236.6   3:20 15514.4
mildred         /mnt/cache/daily.0/pluto                 0    6886    1328   19.3    1:42 13336.2   1:44 13073.8
mildred         /mnt/cache/daily.0/dilemma               0    2382    1199   50.3    1:19 15468.7   1:18 15742.4
mildred         /mnt/cache/daily.0/ocsi                  1       7       1    7.5    0:07    85.3   0:04   142.2
mildred         /mnt/cache/daily.0/engine                0    1314     680   51.7    0:42 16402.3   0:47 14807.6
mildred         /mnt/cache/daily.0/bones                 0    1925     711   36.9    1:04 11298.9   1:05 11207.1
mildred         /mnt/cache/daily.0/spore                 0     907     412   45.5    0:27 15580.3   0:31 13623.0
mildred         /mnt/cache/daily.0/twoblast              0    1032     417   40.4    0:28 15158.7   0:29 14711.4
mildred         /mnt/cache/daily.0/twoblast.test.myorg   0     917     428   46.7    0:33 13309.8   0:30 14619.5
mildred         /mnt/cache/daily.0/enoman                0    8195    3429   41.8    4:08 14143.5   4:06 14271.6
mildred         /mnt/cache/daily.0/torkly                0    6473    2925   45.2    5:33  8990.7   5:33  8995.4
mildred         /mnt/cache/daily.0/anode                 0     973     426   43.8    0:33 13077.7   0:32 13630.3
mildred         /mnt/cache/daily.0/jackfrost             0    1313     488   37.1    0:42 11942.3   0:38 13141.5
mildred         /mnt/cache/daily.0/nofish                0    1002     422   42.1    0:28 15453.6   0:29 14896.5
mildred         /mnt/cache/daily.0/blargo                0    8886    4040   45.5    4:43 14615.5   4:39 14826.0
mildred         /mnt/cache/daily.0/blargo.test.myorg     0    7721    3329   43.1    4:02 14103.4   4:02 14084.3
mildred         /mnt/cache/daily.0/worly                 1      83      27   32.3    0:09  3081.7   0:06  4586.3
mildred         /mnt/cache/daily.0/walrus                0    3328    2141   64.3    2:20 15690.1   2:17 16004.5
mildred         /mnt/cache/daily.0/wattwichita           0   10095    8966   88.8    8:07 18852.3   8:08 18813.9
mildred         /mnt/cache/daily.0/mozartly              0   26588   17562   66.1   16:38 18019.1  16:36 18056.0
mildred         /mnt/cache/daily.0/mozartly.test.myorg   0   26297   17474   66.4   16:39 17907.5  16:40 17893.5
mildred         /mnt/cache/daily.0/bismuth               0   31555   17889   56.7   17:03 17903.5  17:01 17941.9

(brought to you by Amanda version 3.3.3)