Re: Backup problem

In article <358530AD.43CC@bloomberg.net>, kagel@bloomberg.net wrote: > > 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. > > Is there any way I can change the block size parameter by increasing it so that more data is written on a small block. > > 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 > -----== Posted via Deja News, The Leader in Internet Discussion ==----- http://www.dejanews.com/ Now offering spam-free web-based newsreading