Re: Parallel backups with ISM
BAR_MAX_BACKUP was set to 3. OnBar forked 3 backup processes, but ALL the I/O was going to a single DLT, although 3 DLTs had been defined. David Williams wrote in message ... >In article <BrFP3.6458$lS5.14580@news4.mco>, Doug Agnew ><dagnew@charlottepipe.com> writes >>Is it possible to perform a parallel backup with OnBar/ISM and have ISM >>write to multiple devices concurrently? If so, how do you configure ISM? >> >>I have tried this and had OnBar running 3 backup streams (using OnBar -b -L >>0), but all three streams were being written to the same device, even though >>I had three devices (with mounted, labeled volumes) defined in ISMData. >> > > ?? BAR_MAX_BACKUP?? Havn't got an ONCONFIG file in front of me.. > I've just replied to several article with ONCONFIG's in them but can't > seem to find them amongst of the read ones now!! > >>I can find nothing in the manual about this (maybe I'm just blind), but I >>suspect it is not functional. If anyone can provide a definitive answer, it >>would be GREATLY appreciated. >> >> >>TIA >> >>Doug Agnew >>dagnew@charlottepipe.com >> >> > >-- >David Williams
Oh, well, I hate to reply to my own message, but I can RTM and STILL miss the answer. Found the answer in the RELEASE notes.... ISM does perform multiple device output, but you have to use nsradmin to update the nsr.res file. Doug Agnew wrote in message <6WYP3.8265$Tc3.17580@news1.mco>... >BAR_MAX_BACKUP was set to 3. OnBar forked 3 backup processes, but ALL the >I/O was going to a single DLT, although 3 DLTs had been defined. > > >David Williams wrote in message ... >>In article <BrFP3.6458$lS5.14580@news4.mco>, Doug Agnew >><dagnew@charlottepipe.com> writes >>>Is it possible to perform a parallel backup with OnBar/ISM and have ISM >>>write to multiple devices concurrently? If so, how do you configure ISM? >>> >>>I have tried this and had OnBar running 3 backup streams (using >OnBar -b -L >>>0), but all three streams were being written to the same device, even >though >>>I had three devices (with mounted, labeled volumes) defined in ISMData. >>> >> >> ?? BAR_MAX_BACKUP?? Havn't got an ONCONFIG file in front of me.. >> I've just replied to several article with ONCONFIG's in them but can't >> seem to find them amongst of the read ones now!! >> >>>I can find nothing in the manual about this (maybe I'm just blind), but I >>>suspect it is not functional. If anyone can provide a definitive answer, >it >>>would be GREATLY appreciated. >>> >>> >>>TIA >>> >>>Doug Agnew >>>dagnew@charlottepipe.com >>> >>> >> >>-- >>David Williams > >
In article <UIZP3.8552$2F3.17443@news2.mco>, Doug Agnew <dagnew@charlottepipe.com> writes >Oh, well, I hate to reply to my own message, but I can RTM and STILL miss >the answer. > >Found the answer in the RELEASE notes.... ISM does perform multiple device >output, but you have to use nsradmin to update the nsr.res file. > Seem to remember finding this but wasn't sure if BAR_MAXBACKUP find itor not. Even the 7.31 release notes say nsradmin is not supported and using it may cause problems!!! Where it is and what do you do? -- David Williams