Re: backing up logical logs to disk on Online, Ver. 5

Billy Wheeler (bw000001@pixie.co.za) wrote: : At 10:42 PM 3/6/96 GMT, Marvin S Beck wrote: : > 1) tapes are slow and in this day of large 2 Gb and 4Gb disks, dynamic : > backup to tape only seems very restrictive : Yes. Just remember that Informix can only address 2GB of disk at a time. This is true for chunks, but I don't think it's true of log backups, regardless of whether it's disk or tape. The reason OnLine is limited in the chunk size is that it does an lseek() to verify the size of the device. It doesn't do that for log backups. : > Would tbtape work pointed at a raw disk device? (I doubt it since the : > program appears to close, rewind and open the device--would disk : > devices take such commands?) It does work pointed to a disk device. It isn't tbtape which issues the rewind command; this is done automatically when you close a rewinding tape device (which is why we say you have to use a rewinding device). So if you're using disk, it won't rewind, and that's okay. June ---- June Tong Informix Software ---- ---- Senior Consultant (415) 926-6140 ---- ---- International Support junet@informix.com ---- ---- Location-du-jour: Beijing ----