Re: OnLine 7.2 3rd Party Backup / Restore Utilities
At 10:42 AM 7/28/97 -0400, Glenn Travis wrote:
}Jon C Vemo wrote:
}
}> At 10:34 AM 7/25/97 -0400, Art S. Kagel wrote:
}> >postmaster@colburn.com wrote:
}> >>
}> >> I have been using ontape to backup my database for about a year. I
}> only
}> >> have 1 (about 2GB with 300 tables) and I do a full backup every
}> night
}> >> onto DAT. The problems I have:
}> >
}> >If you upgrade to 7.21+ you get the new backup/restore utility onbar.
}>
}> >Onbar has several advantages over ontape & onarchive:
}> >
}> >1) Can to single dbspace restore or archive.
}> >2) Can restore 'up to the minute' if logs are available (ie user says
}>
}> > "Ooops I deleted all my rows at 11:15 can you restore them?")
}> >3) Uses the new POSIX archive API so that 3rd party hardware
}> interfaces
}> >can be used. Many backup vendors are subscribing to this interface
}> and
}> >providing the shared libraries needed, ex: Legato Networker. These
}> >ofter
}> >add multiple device handling and tape libraries so that archives do
}> not
}> >wait for tape changes.
}>
}> The latter is the real benefit to OnBar. Both single dbspace
}> backup/restore,
}> as well as point-in-time recovery, are available inthe 7.2x versions
}> of
}> OnArchive.
}> With OnArchive (when you get the thing working smoothly) you can use
}> multiple devices. We are using OnArchive and perform level0's to 6 ea.
}> 8mm
}> tape drives, in parallel.
}>
}> OnBar allows you to use one of many the many storage management
}> products
}> (like Legato, ADSM, Alexandria, etc.), that support OnBar through the
}> XBSA
}> standard. Most of these products support multiple devices, robotic
}> libs., etc.
}>
}> We are testing the Alex product with 4 drive DLT libs now. We
}> anticipate a
}> significant thoughput increase, as well as a significant decrease in
}> support
}> of out backup processes (OnArchive is a piece of .......)
}>
}> Jon
}>
}> ---
}> ------------------------------------------------------------------------
}>
}> ---
}> Jon C. Vemo "Life is like a dogsled team, if you ain't the
}>
}> jvemo@cyberspace.com lead dog the scenery never changes."
}> ------------------------------------------------------------
}> ---------------
}> ---
}
} How do you get a significant throughput increase by going from
}'multiple' 4mms to a 'single' tape storage library?
Sorry, should have clarified. We are going to multiple 8mms to a DLT lib
containing multiple DLT drives (4).
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Jon C. Vemo "Life is like a dogsled team, if you ain't the
jvemo@cyberspace.com lead dog the scenery never changes."
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