backup slow -level zero

I have a 18 GIG database and Its taking more than 2.5 hrs to do a level zero backup.I am using a 12GIG DDS tape drive on an HP9000 HP-UX 11.0. What configuration can I do to speed up the backup. My config file is as follows. #*********************************************************************** *** # # INFORMIX SOFTWARE, INC. # # Title: onconfig.std # Description: Informix Dynamic Server Configuration Parameters # #*********************************************************************** *** # Root Dbspace Configuration ROOTNAME rootdbs # Root dbspace name ROOTPATH /dev/rootdbs # Path for device containing rootdbspace ROOTOFFSET 0 # Offset of root dbspace into device (Kbytes) ROOTSIZE 1000000 # Size of root dbspace (Kbytes) # Disk Mirroring Configuration Parameters MIRROR 0 # Mirroring flag (Yes = 1, No = 0) MIRRORPATH # Path for device containing mirroredroot MIRROROFFSET 0 # Offset into mirrored device (Kbytes) # Physical Log Configuration PHYSDBS rootdbs2 # Location (dbspace) of physical log PHYSFILE 250000 # Physical log file size (Kbytes) # Logical Log Configuration LOGFILES 30 # Number of logical log files LOGSIZE 5000 # Logical log size (Kbytes) # Diagnostics MSGPATH /u/informix/online.log # System message log file path CONSOLE /dev/console # System console message path ALARMPROGRAM /u/informix/etc/log_full.sh # Alarm program pathSYSALARMPROGRAM /u/informix/etc/evidence.sh # System Alarm program path TBLSPACE_STATS 0 # System Archive Tape Device TAPEDEV /dev/rmt/0m # Tape device path TAPEBLK 6144 # Tape block size (Kbytes) TAPESIZE 24000000 # Maximum amount of data to put on tape (Kbytes) # Log Archive Tape Device LTAPEDEV /dev/rmt/1m # Log tape device path LTAPEBLK 1024 # Log tape block size (Kbytes) LTAPESIZE 4000000 # Max amount of data to put on log tape (Kbytes) # Optical STAGEBLOB # Informix Dynamic Server/Optical staging area # System Configuration SERVERNUM 1 # Unique id corresponding to a DynamicServer instance DBSERVERNAME ok_srvr # Name of default database server DBSERVERALIASES ok_tcp # List of alternate dbservernames NETTYPE ipcshm,1,300,CPU # Configure poll thread(s) for nettype NETTYPE soctcp,1,5,NET # Configure poll thread(s) for nettype DEADLOCK_TIMEOUT 60 # Max time to wait of lock indistributed env. RESIDENT 1 # Forced residency flag (Yes = 1, No = 0) MULTIPROCESSOR 1 # 0 for single-processor, 1 for multi-processor NUMCPUVPS 2 # Number of user (cpu) vps SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vpsto one NOAGE 1 # Process aging AFF_SPROC 0 # Affinity start processor AFF_NPROCS 0 # Affinity number of processors # Shared Memory Parameters LOCKS 400000 # Maximum number of locks BUFFERS 200000 # Maximum number of shared buffers NUMAIOVPS 8 # Number of IO vps PHYSBUFF 128 # Physical log buffer size (Kbytes) LOGBUFF 128 # Logical log buffer size (Kbytes)LOGSMAX 100 # Maximum number of logical log files CLEANERS 127 # Number of buffer cleaner processes SHMBASE 0x0 # Shared memory base address SHMVIRTSIZE 300000 # initial virtual shared memory segmentsize SHMADD 40000 # Size of new shared memory segments (Kbytes) SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited CKPTINTVL 600 # Check point interval (in sec) LRUS 127 # Number of LRU queues LRU_MAX_DIRTY 1 # LRU percent dirty begin cleaning limit LRU_MIN_DIRTY 0 # LRU percent dirty end cleaning limit LTXHWM 50 # Long transaction high water markpercentage LTXEHWM 60 # Long transaction high water mark (exclusive) TXTIMEOUT 0x12c # Transaction timeout (in sec) STACKSIZE 64 # Stack size (Kbytes) # System Page Size # BUFFSIZE - Dynamic Server no longer supports this configuration parameter. # To determine the page size used by Dynamic Server on your platform # see the last line of output from the command, 'onstat -b'. # Recovery Variables # OFF_RECVRY_THREADS: # Number of parallel worker threads during fast recovery or an offline restore. # ON_RECVRY_THREADS: # Number of parallel worker threads during an online restore. OFF_RECVRY_THREADS 10 # Default number of offline workerthreads ON_RECVRY_THREADS 1 # Default number of online workerthreads # Data Replication Variables # DRAUTO: 0 manual, 1 retain type, 2 reverse type DRAUTO 0 # DR automatic switchover DRINTERVAL 30 # DR max time between DR buffer flushes (in sec) DRTIMEOUT 30 # DR network timeout (in sec) DRLOSTFOUND /u/informix/etc/dr.lostfound # DR lost+found file path # CDR Variables CDR_LOGBUFFERS 2048 # size of log reading buffer pool (Kbytes) CDR_EVALTHREADS 1,2 # evaluator threads (per-cpu- vp,additional) CDR_DSLOCKWAIT 5 # DS lockwait timeout (seconds) CDR_QUEUEMEM 4096 # Maximum amount of memory for any CDR queue (Kbytes)CDR_LOGDELTA 30 # % of log space allowed in queue memory CDR_NUMCONNECT 400 # Expected connections per server CDR_NIFRETRY 300 # Connection retry (seconds) CDR_NIFCOMPRESS 0 # Link level compression (-1 never, 0 none, 9 max) # Backup/Restore variables BAR_ACT_LOG /tmp/bar_act.log BAR_MAX_BACKUP 0 BAR_RETRY 1 BAR_NB_XPORT_COUNT 10 BAR_XFER_BUF_SIZE 31 # Informix Storage Manager variables ISM_DATA_POOL ISMData # If the data pool name is changed, be sure to # update $INFORMIXDIR/bin/onbar. Change to # ism_catalog -create_bootstrap -pool <new name> ISM_LOG_POOL ISMLogs # Read Ahead Variables RA_PAGES # Number of pages to attempt to readahead RA_THRESHOLD # Number of pages left before next group # DBSPACETEMP: # Dynamic Server equivalent of DBTEMP for SE. This is the list of dbspaces # that the Dynamic Server SQL Engine will use to create temp tables etc. # If specified it must be a colon separated list of dbspaces that exist # when the Dynamic Server system is brought online. If not specified, or if # all dbspaces specified are invalid, various ad hoc queries w

Yes, seems a bit slow. I think we get about 14GBytes/hour to DLTs. Your TAPESIZE seems big. Tests I did showed 32k or 64k is optimal. You've got 6M. <chivaviro1379@my-deja.com> wrote in message news:8kfnth$uuo$1@nnrp1.deja.com... > I have a 18 GIG database and Its taking more than 2.5 hrs to do a level > zero backup.I am using a 12GIG DDS tape drive on an HP9000 HP-UX 11.0. > What configuration can I do to speed up the backup. > My config file is as follows. > > #*********************************************************************** > *** > # > # INFORMIX SOFTWARE, INC. > # > # Title: onconfig.std > # Description: Informix Dynamic Server Configuration Parameters > # > #*********************************************************************** > *** > > # Root Dbspace Configuration > > ROOTNAME rootdbs # Root dbspace name > ROOTPATH /dev/rootdbs # Path for device containing root> dbspace > ROOTOFFSET 0 # Offset of root dbspace into device > (Kbytes) > ROOTSIZE 1000000 # Size of root dbspace (Kbytes)> > # Disk Mirroring Configuration Parameters > > MIRROR 0 # Mirroring flag (Yes = 1, No = 0) > MIRRORPATH # Path for device containing mirrored> root > MIRROROFFSET 0 # Offset into mirrored device (Kbytes)> > # Physical Log Configuration > > PHYSDBS rootdbs2 # Location (dbspace) of physical log > PHYSFILE 250000 # Physical log file size (Kbytes)> > # Logical Log Configuration > > LOGFILES 30 # Number of logical log files > LOGSIZE 5000 # Logical log size (Kbytes)> > # Diagnostics > > MSGPATH /u/informix/online.log # System message log file path > CONSOLE /dev/console # System console message path > ALARMPROGRAM /u/informix/etc/log_full.sh # Alarm program path> SYSALARMPROGRAM /u/informix/etc/evidence.sh # System Alarm program path > TBLSPACE_STATS 0> > # System Archive Tape Device > > TAPEDEV /dev/rmt/0m # Tape device path > TAPEBLK 6144 # Tape block size (Kbytes) > TAPESIZE 24000000 # Maximum amount of data to put on tape > (Kbytes)> > # Log Archive Tape Device > > LTAPEDEV /dev/rmt/1m # Log tape device path > LTAPEBLK 1024 # Log tape block size (Kbytes) > LTAPESIZE 4000000 # Max amount of data to put on log tape > (Kbytes)> > # Optical > > STAGEBLOB # Informix Dynamic Server/Optical > staging area > > # System Configuration > > SERVERNUM 1 # Unique id corresponding to a Dynamic> Server instance > DBSERVERNAME ok_srvr # Name of default database server > DBSERVERALIASES ok_tcp # List of alternate dbservernames > NETTYPE ipcshm,1,300,CPU # Configure poll thread(s) for nettype > NETTYPE soctcp,1,5,NET # Configure poll thread(s) for nettype > DEADLOCK_TIMEOUT 60 # Max time to wait of lock in> distributed env. > RESIDENT 1 # Forced residency flag (Yes = 1, No = > 0) > > MULTIPROCESSOR 1 # 0 for single-processor, 1 for multi-> processor > NUMCPUVPS 2 # Number of user (cpu) vps > SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vps> to one > > NOAGE 1 # Process aging > AFF_SPROC 0 # Affinity start processor > AFF_NPROCS 0 # Affinity number of processors> > # Shared Memory Parameters > > LOCKS 400000 # Maximum number of locks > BUFFERS 200000 # Maximum number of shared buffers > NUMAIOVPS 8 # Number of IO vps > PHYSBUFF 128 # Physical log buffer size (Kbytes) > LOGBUFF 128 # Logical log buffer size (Kbytes)> LOGSMAX 100 # Maximum number of logical log files > CLEANERS 127 # Number of buffer cleaner processes > SHMBASE 0x0 # Shared memory base address > SHMVIRTSIZE 300000 # initial virtual shared memory segment> size > SHMADD 40000 # Size of new shared memory segments > (Kbytes) > SHMTOTAL 0 # Total shared memory (Kbytes). > 0=>unlimited > CKPTINTVL 600 # Check point interval (in sec) > LRUS 127 # Number of LRU queues > LRU_MAX_DIRTY 1 # LRU percent dirty begin cleaning limit > LRU_MIN_DIRTY 0 # LRU percent dirty end cleaning limit > LTXHWM 50 # Long transaction high water mark> percentage > LTXEHWM 60 # Long transaction high water mark > (exclusive) > TXTIMEOUT 0x12c # Transaction timeout (in sec) > STACKSIZE 64 # Stack size (Kbytes)> > # System Page Size > # BUFFSIZE - Dynamic Server no longer supports this configuration > parameter. > # To determine the page size used by Dynamic Server on your > platform > # see the last line of output from the command, 'onstat -b'. > > > # Recovery Variables > # OFF_RECVRY_THREADS: > # Number of parallel worker threads during fast recovery or an offline > restore. > # ON_RECVRY_THREADS: > # Number of parallel worker threads during an online restore. > > OFF_RECVRY_THREADS 10 # Default number of offline worker> threads > ON_RECVRY_THREADS 1 # Default number of online worker> threads > > # Data Replication Variables > # DRAUTO: 0 manual, 1 retain type, 2 reverse type > DRAUTO 0 # DR automatic switchover > DRINTERVAL 30 # DR max time between DR buffer flushes > (in sec) > DRTIMEOUT 30 # DR network timeout (in sec) > DRLOSTFOUND /u/informix/etc/dr.lostfound # DR lost+found file path> > # CDR Variables > CDR_LOGBUFFERS 2048 # size of log reading buffer pool > (Kbytes) > CDR_EVALTHREADS 1,2 # evaluator threads (per-cpu- > vp,additional) > CDR_DSLOCKWAIT 5 # DS lockwait timeout (seconds) > CDR_QUEUEMEM 4096 # Maximum amount of memory for any CDR > queue (Kbytes)> CDR_LOGDELTA 30 # % of log space allowed in queue memory > CDR_NUMCONNECT 400 # Expected connections per server > CDR_NIFRETRY 300 # Connection retry (seconds) > CDR_NIFCOMPRESS 0 # Link level compression (-1 never, 0 > none, 9 max)> > # Backup/Restore variables > BAR_ACT_LOG /tmp/bar_act.log > BAR_MAX_BACKUP 0 > BAR_RETRY 1 > BAR_NB_XPORT_COUNT 10 > BAR_XFER_BUF_SIZE 31> > # Informix Storage Manager variables > ISM_DATA_POOL ISMData # If the data pool name is changed, be > sure to > # update $INFORMIXDIR/bin/onbar. > Change to > # ism_catalog -create_bootstrap -pool > <new name> > ISM_LOG_POOL ISMLogs > > # Read Ahead Variable