Hi.
I have been working with some tapes for some months, i was
wondering how much data my tape have been writing && erasing.
I use the command query option 16 and receive this data:
+---------------+--------+--------+------------+--------+
| Volume | Mounts | Errors | Writes | Status |
+---------------+--------+--------+------------+--------+
| FullTape-0007 | 10 | 0 | 19,008,158 | Full |
| FullTape-0015 | 3 | 0 | 4,982,277 | Used |
| FullTape-0014 | 3 | 0 | 5,149,360 | Used |
| FullTape-0004 | 3 | 0 | 4,796,619 | Used |
| FullTape-0001 | 3 | 0 | 5,153,608 | Used |
| FullTape-0013 | 5 | 0 | 8,990,607 | Used |
| FullTape-0011 | 7 | 0 | 10,309,906 | Used |
| FullTape-0010 | 9 | 0 | 13,201,649 | Used |
| FullTape-0009 | 9 | 0 | 18,643,901 | Used |
| FullTape-0008 | 9 | 0 | 17,578,293 | Used |
| FullTape-0006 | 10 | 0 | 15,953,200 | Used |
| FullTape-0005 | 11 | 0 | 20,655,434 | Used |
| FullTape-0003 | 11 | 0 | 20,101,553 | Used |
| FullTape-0002 | 11 | 0 | 19,915,631 | Used
Now i can see that i don't have any errors, now, what about the other fields:
Mount, is how many times, bacula have been using the command Mount for
the volume? This is my bacula-sd.conf for my tape:
# A FreeBSD tape drive -->FreeBSDFroums
Device {
Name = StorageWorks-232
Media Type = LTO-1
Archive Device = /dev/nsa0
AutomaticMount = yes
AlwaysOpen = yes
Removable media = yes
Label media = yes
Random access = no
Hardware End of Medium = no
BSF at EOM = yes
Backward Space Record = no
Fast Forward Space File = no
TWO EOF = yes
Maximum Network Buffer Size = 131072
Maximum Spool Size = 17GB
Spool Directory = "/spool"
}
The option AlwaysOpen=yes, my understanding is, once bacula use the
command Mount, will always keep the device opened, until he fished all
the jobs, in my case they are each weekend 10 jobs = 95GB total, each
monday 7 jobs = 70GB total.
My volume retention period is: 80 days.
HP say this about this tapes:
Technology Load Unload Cycles Full Volume Back ups (FVB) Number
of Passes
Ultrium 20,000 260
1,000,000
Them, could please someone explain me what bacula tell me with this
info, i will appreciated a lot.
OS: Freebsd 6.1-p16
Drive: HP Storage Works 232 External.
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