Re: archiving strategies with OnLine 5

: In article <3rkqme$8n0@mojo.eng.umd.edu> mheinick@eng.umd.edu (Mark Heinicke) writes: : We have low-volume use and one tape drive available for archiving. Level : 0 archives with repeated logical log backups in between seem to have met : our archive needs; the one restore we had to do went OK. But the : Administrator's Guide appears to recommend frequent level-1 and : perhaps level-2 archives. The only direct benefit I see in this is a : reduction of the number of logical log files. I have run some highly unscientific tests of speed of backup for level 1, level 2, and level 0 backups. I didn't find much difference in speed. My strategy is to do daily level-0 backups to a large, compressed DAT tape drive. During this time, logging is handled by having a maximum number of logfiles at about 5 megabytes apiece. They can handle the logging load while the tape drive is busy. BTW, we've found that our archive process goes a **lot** faster when backing up to the compressed device, rather than the uncompressed tape device. Joe -- --------------------------------------------------------------------------- Joe Lumbley(jlumbley@netcom.com) Dallas, Texas ----------------------------------------------------------------------------