Well, tape properties show as follows:
Overwrite: Infinite - Do not allow Overwrite (this is needed because i want to store security logs forever %) )
Append: Infinite - Allow Append.
I haven't tried to run this two jobs (btw, one jobs backups logs from one server, second - from another server, these jobs were created by policy and two selection lists) at different time, because:
1) They were created by policy and there is no option to run different selection lists on different schedule
2) They run together perfectly: only one tape is used, both jobs write on the same tape
The problem is that this tape is not appendable next week
BTW, i have multiple jobs creating backups of user docs, data, Exchange databases etc, and this jobs append to their media set associated tapes very well, but this two particular jobs have problems with append...