Re: Backup Very Slow

Prior to moving to a data center (few months back) my backups were to Ultrium 3's. I could backup 330 gigs in 2 hrs (HP 11.11 IDS 9.40 ,7420). Before the move to Ultriums I was using DLT 320's with the backup taking 5+ hrs. Thanks "DORN B" <varadorn@gmail.c om> To Sent by: PapaKiKi <agwanzura@okzim.co.zw> informix-list-bou cc nces@iiug.org informix-list@iiug.org Subject Re: Backup Very Slow 09/05/2006 06:03 PM Another way that I did before was to change the tape backup device from DLT to LTO if your budget is allowed. It greatly reduces the backup time for us. Dorn B. On 5 Sep 2006 10:27:45 -0700, PapaKiKi <agwanzura@okzim.co.zw> wrote: have Informix IDS 7.3 on an Rp4440 server with UNIX 11.0 I am using DLT Tape drives and 80gig tapes to do my back up on a 98gig database. My problem is that a level 0 backup takes 24hrs to finish. Using ontape . I need to reduce the time.My database has 405 users at peak and an average of 240 users during the day .I normally start my backup at 1600hrs.I need help to reduce this time.Any help or suggestions are welcome. Here is my configuration file ( onconfig.live) #************************************************************************** # # 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 rootdbs # 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/c8t3d0BEST # Tape device path TAPEBLK 6144 # Tape block size (Kbytes) TAPESIZE 80000000 # Maximum amount of data to put on tape (Kbytes) # Log Archive Tape Device LTAPEDEV /dev/rmt/1m # Log tape device pat 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,1,600,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 500000 # 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 360 # 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