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Re: ontape of large database

Posted in 2009

Topics: Backup & Restore, Storage & Space Management

Floyd Wellershaus — — source: Usenet: comp.databases.informix

Hey L. S. what are you talking about, just using dd on a chunk by chunk basis ? Thanks. ----- Original Message ----- From: "LIGHT SCANS" <light_scans@yahoo.com> Sent: Fri, September 18, 2009 17:53 Subject:Re: ontape of large database Hello Floyd, Since you are happy with ontape, use it. I just wanted to add that a cold transfer is also possible. That is what we use for our 1.5 Tb database. L.S. _______________________________________________ Informix-list mailing list Informix-list@iiug.org http://www.iiug.org/mailman/listinfo/informix-list ----- End of original message -----

↪ replying to Floyd Wellershaus
LIGHT SCANS — — source: Usenet: comp.databases.informix

Hello Floyd, Yes, but haven't tried dd. I have cooked files so I use a form of "cp" on a chunk by chunk basis. That gives me 1 read and 1 write. I even wrote a script to do them all in parallel. Let me add another strange thing I do (that works!). Every week I backup my 1.5 Tb production database using "compress -c" from source to target for all chunks in parallel. It is fast, small (about 0.2 Tb), and easily accessible for restore. And all of my restores worked (using "uncompress -c" in parallel). But I can only vouch for this kind of I/ O and CPU on AIX. -L.S.

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