Re: Backup problem

machayach@okzim.gaia.co.zw wrote: > > I have an 8 GIG database on an HP UX 10.2 machine with a 12 GIG tape drive > and I am using 2 tapes (120m) to do the backup. The problem is on the time > which is an 1hr 30min when the database is in quiescent mode and 3 hrs when > it is online and someone has to be there to change the tape. How then can I > improve the speed and at the same time use one tape. below are the parameters > settings that I have. Please help. > > MODIFYING TAPE PARAMETERS > > Tape Device [/dev/rmt/1m ] > > Block Size [ 1024] Kbytes Tape Size [ 4000000] Kbytes > > Log Tape Device [/dev/rmt/2m ] > > Block Size [ 1024] Kbytes Tape Size [ 4000000] Kbytes If your tape drive is really 12GB why have you configured a tapesize of only about 4GB? This is why you are falling onto a second tape! Just change TAPESIZE 12000000 if the drive is 12GB non-compressed or if the capacity is 12GB compressed (is the /dev/rmt/1m device a compressed device?) than use 10GB or TAPESIZE 10000000 since binary data does not compress as well as the tape drive manufacturers would like to believe it does (if your data is mostly text you may get closer to the 12GB ideal). Art S. Kagel