On Dec 18, 2007 12:56 AM, Arno Lehmann <[EMAIL PROTECTED]> wrote: > Hello, > > 18.12.2007 00:47,, pedro moreno wrote:: > > 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: > > Not only command line mounts, but also automatically initiated ones. > Basically, this is the number of times the tapes have been loaded to a > drive. > > ... > > 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. > > If (and I'm not sure this is the case here as I didn't check this in > the code) the mount counter works as I expect, it will only be > incremented when a tape is actually loaded or accessed the first time > after you manually load it. > > > 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. > > The query should be adapted to your needs, i.e. you should modify the > thresholds in the query.sql file, which is rather simple. > > The errors and mounts columns are rather simple to modify, I think. If > you want to get useful thresholds for the no. of writes, you should > take your average (or maximum) effective volume capacity, divide thet > by the block size you use (probably about 64 k) and multiply with the > 260 full backups HP claim the tapes can stand. The result would be > your maximum number of writes per tape - or somewhat close to it. > > Does that help you? > > Arno > > > > OS: Freebsd 6.1-p16 > > Drive: HP Storage Works 232 External. > > > > ------------------------------------------------------------------------- > > SF.Net email is sponsored by: > > Check out the new SourceForge.net Marketplace. > > It's the best place to buy or sell services > > for just about anything Open Source. > > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace > > _______________________________________________ > > Bacula-users mailing list > > Bacula-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/bacula-users > > > > -- > Arno Lehmann > IT-Service Lehmann > www.its-lehmann.de > > ------------------------------------------------------------------------- > SF.Net email is sponsored by: > Check out the new SourceForge.net Marketplace. > It's the best place to buy or sell services > for just about anything Open Source. > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users >
Hi Arno. I was checking my drive and tapes this days. updating his Firmware, etc. I have been having some problems with my drive, but looks like is back. Well analyzing your info, the last part about: > The errors and mounts columns are rather simple to modify, I think. If > you want to get useful thresholds for the no. of writes, you should > take your average (or maximum) effective volume capacity, divide thet > by the block size you use (probably about 64 k) and multiply with the > 260 full backups HP claim the tapes can stand. The result would be > your maximum number of writes per tape - or somewhat close to it. Right now, my tape has disable the HW compression, them i just get 100GB. To get this data i need to calculate: maximum Numbers of Writes per tape = (100,000kb * 64kb)/260 = 24615.385 I'm right? If this result is correct, i already need to change some volumes soon? I'm right Arno? Thanks for your time!!! Happy New Year to all!!! ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
