1. Where can I find detailed documentation on what each of the values
provided in the statistics means and if/how they should add up?

2. When Amanda does its estimates for individual file systems being backed up
with dump , how does it do it?  
Does it do the same procedure for L0 dumps as for incremental dumps?  Is
there any way to get any time savings if there's a full L0 dump being done as
opposed to an incremental dump?

STATISTICS:
                          Total       Full      Incr.
                        --------   --------   --------
Estimate Time (hrs:min)    2:01
Run Time (hrs:min)        10:22
Dump Time (hrs:min)        4:44       2:49       1:55
Output Size (meg)       58030.4    38691.5    19338.9
Original Size (meg)     48637.9    38691.5     9946.4
Avg Compressed Size (%)     --         --         --    (level:#disks ...)
Filesystems Dumped           59         12         47   (1:46 2:1)
Avg Dump Rate (k/s)      3483.8     3903.2     2867.4

Tape Time (hrs:min)        1:49       1:19       0:30
Tape Size (meg)         53214.7    38692.0    14522.7
Tape Used (%)              52.5       38.1       14.3   (level:#disks ...)
Filesystems Taped            60         12         48   (1:47 2:1)

Chunks Taped                  0          0          0
Avg Tp Write Rate (k/s)  8367.6     8392.1     8302.9

--
 Mark Hennessy