i've got tape from someone asking me if i can restore data from it. it's
DDS-1 tape.

i found blocksizes (8k) and then restored 6 tape-files total.

3 first were 80 bytes each, then 72MB (which looks like dump) and then 2
80-byte files.

as this header files has "DECVMSBACKUP" text i think it's backup from VMS.

does anybody know program that can extract files from it?
or format of this dump file?

thank you very much! (and please respond privately, i'm not netbsd-vax
user)


small files look like this:

file1
00000000  56 4f 4c 31 43 48 41 20  20 20 20 20 20 20 20 20  |VOL1CHA         |
00000010  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
*
00000040  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 33  |               3|
00000050
file2
00000000  48 44 52 31 43 48 41 2e  42 43 4b 20 20 20 20 20  |HDR1CHA.BCK     |
00000010  20 20 20 20 20 43 48 41  20 20 20 30 30 30 31 30  |     CHA   00010|
00000020  30 30 31 30 30 30 31 30  30 30 30 32 30 38 34 30  |0010001000020840|
00000030  30 32 30 38 34 20 30 30  30 30 30 30 44 45 43 56  |02084 000000DECV|
00000040  4d 53 42 41 43 4b 55 50  20 20 20 20 20 20 20 20  |MSBACKUP        |
00000050
file3
00000000  48 44 52 32 46 30 38 31  39 32 30 38 31 39 32 20  |HDR2F0819208192 |
00000010  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000020  20 20 20 20 4d 20 20 20  20 20 20 20 20 20 20 20  |    M           |
00000030  20 20 30 30 20 20 20 20  20 20 20 20 20 20 20 20  |  00            |
00000040  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000050
file5
00000000  45 4f 46 31 43 48 41 2e  42 43 4b 20 20 20 20 20  |EOF1CHA.BCK     |
00000010  20 20 20 20 20 43 48 41  20 20 20 30 30 30 31 30  |     CHA   00010|
00000020  30 30 31 30 30 30 31 30  30 30 30 32 30 38 34 30  |0010001000020840|
00000030  30 32 30 38 34 20 30 30  39 31 31 32 44 45 43 56  |02084 009112DECV|
00000040  4d 53 42 41 43 4b 55 50  20 20 20 20 20 20 20 20  |MSBACKUP        |
00000050
file6
00000000  45 4f 46 32 46 30 38 31  39 32 30 38 31 39 32 20  |EOF2F0819208192 |
00000010  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000020  20 20 20 20 4d 20 20 20  20 20 20 20 20 20 20 20  |    M           |
00000030  20 20 30 30 20 20 20 20  20 20 20 20 20 20 20 20  |  00            |
00000040  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000050