Re: [Bacula-users] Questions about daily tape rotation

2006-05-21 Thread Arno Lehmann
Hi, On 5/19/2006 3:55 PM, John Goerzen wrote: Hello all, In the Bacula manual, one suggestion for daily tape rotation is to use a different pool for each day. That sounds excessively complex to me. We want to do daily rotations to offsite storage, though. I thought of a couple of options. O

[Bacula-users] Re: Confusion about changer volumes

2006-05-21 Thread John Goerzen
On 2006-05-21, Arno Lehmann <[EMAIL PROTECTED]> wrote: >> I am concerned about the unpredictability of the tape handling here, >> alas. > > I can't say I experience unpredictable tape handling here, so it would > be good do see more detailed information from you: If possible, use a > pool with a

Re: [Bacula-users] Re: Re: How much available space on the tape?

2006-05-21 Thread Georger Araujo
No, I didn't, at least not in an explicit manner. When I configured the library, I don't recall having enabled software compression - and I suppose BEB would "know" that hardware compression was the way to go, because the library was in its certified device list and the program knew all about it. R

Re: [Bacula-users] Re: How much available space on the tape?

2006-05-21 Thread Arno Lehmann
Hi, On 5/20/2006 3:43 PM, Timo Neuvonen wrote: ... So, one solution would be using of software compression? I guess Bacula allows it? Yes, but keep in mind it's done on the client. Your customers or co-workers will hate you if you run your backup jobs with a high compression level during wor

Re: [Bacula-users] Re: How much available space on the tape?

2006-05-21 Thread Arno Lehmann
Hi, On 5/21/2006 3:52 PM, Georger Araujo wrote: I guess this means I'll have to closely watch how many backups it takes to fill a tape - the worst case being the nominal capacity of the tape, i.e. 200 GB uncompressed. I deployed Bacula web-gui yesterday, it'll make this task easier. Try bacula

Re: [Bacula-users] Re: How much available space on the tape?

2006-05-21 Thread Arno Lehmann
Hello, On 5/21/2006 3:48 PM, Wolfgang Denk wrote: In message <[EMAIL PROTECTED]> you wrote: Anyway, in typical scenarios, the only reliable way way of guessing tape capacity (or remaining capacity) is estimating based on individual data, i.e. using existing tapes with similar data on them as

[Bacula-users] Re: Re: How much available space on the tape?

2006-05-21 Thread Timo Neuvonen
> I'm still puzzled, though, how BrightStor Enterprise > Backup 10.5 managed not only to estimate me how much > space was still available - it also told me the > compression ratio of the backup! I used to get 1.5:1 > Did you use software compression in the backup software, instead of hardware compr

Re: [Bacula-users] Re: How much available space on the tape?

2006-05-21 Thread Georger Araujo
I guess this means I'll have to closely watch how many backups it takes to fill a tape - the worst case being the nominal capacity of the tape, i.e. 200 GB uncompressed. I deployed Bacula web-gui yesterday, it'll make this task easier. I'm still puzzled, though, how BrightStor Enterprise Backup 10.

Re: [Bacula-users] Re: How much available space on the tape?

2006-05-21 Thread Wolfgang Denk
In message <[EMAIL PROTECTED]> you wrote: > > Anyway, in typical scenarios, the only reliable way way of guessing tape > capacity (or remaining capacity) is estimating based on individual data, > i.e. using existing tapes with similar data on them as reference. I wouldn't call this a "reliable"

Re: [Bacula-users] Re: How much available space on the tape?

2006-05-21 Thread Arno Lehmann
Hi, On 5/20/2006 9:45 PM, Robert Nelson wrote: It is possible to query this information from SCSI tape drives using the LOG SENSE command, page 0x31. Hmm. According to the documents I read, LOG SENSE itself is optional, and page 0x31 is vendor specific (according to SPC-3 draft, and SSC-3 dr

Re: [Bacula-users] Re: Confusion about changer volumes

2006-05-21 Thread Arno Lehmann
Hello, On 5/20/2006 11:32 PM, John Goerzen wrote: On 2006-05-19, John Goerzen <[EMAIL PROTECTED]> wrote: I did an update volume and set yesterday's volume to used... then it said it was waiting for mount. I ran mount for the second time (remember I had already done that earlier), and then the