Re: Is it possible to tbtape on

stu@ham.medlab.co.nz (Stewart Hague) wrote: >>Is it possible to run tbtape on a mirrored disk image of informix dbspace ? >>We have a HP system with HP-UX 9.05 and informix 5.03 UC1 (?) and system >>comes to screatching halt whenever we start running tbtape to backup the >>system while waiting for the second tape (we have a database larger than >>a GB ). >I'm not sure on the exact details, but it should be possible to a copy of the >mirrored disk space (once taken out of the mirror so it remains stable) using >a standard unix utility like dd, or something that handles a change in media >like cpio (or a combination of the two). >Hope this is of some help. Sorry Stewart, i don't mean to get at you twice in one session...but...:-( ...please don't do this...You will get zero support from Informix if your restore fails, and I don't think unix utilities like cpio can back up a raw partition in anycase. just a couple of other points...Sirinvasa.. you say it comes to a screaming halt while it's waiting for the SECOND tape? Am i reading this correctly? If this is the case then what you are experiencing rings a bell. The exact technical reasons escape me at the moment but when i wore a younger man's clothes I sort've understood them and they sort've made sense. i think it's got something to do with flushing the physical buffers. Anyhow, if tbtape is interrupted in it's little task (like waiting for a tape to be changed) then it CAN make everybody wait see, until it gets cracking again. --- Peter Tashkoff Auckland, New Zealand e-mail ptash@iconz.co.nz