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тАО04-04-2006 12:38 AM
тАО04-04-2006 12:38 AM
I am facing problem in back-up.for Data size to be backed up Max 1.8 GB,we need two tapes.I am using Tape drive TLZ07 &
tape used is DDS 4 20 GB .Operating system version is openvms 7.1. I do not understand why it required another tape as data to be backed up is less than tape size?
Dipali.
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тАО04-04-2006 12:46 AM
тАО04-04-2006 12:46 AM
SolutionBe sure to specify the correct qualifiers with the INIT and BACKUP commands (/DENSITY=DDSx and /MEDIA=COMPACTION).
And keep in mind, that the compression facor depends on the kind of data, storing ZIP archives will not gain much from the tape's compression.
Also media errors and the size of redundancy blocks (/GROUP) may add a little overhead.
regards Kalle
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тАО04-04-2006 12:49 AM
тАО04-04-2006 12:49 AM
Re: Regarding Tape backup
regards Kalle
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тАО04-04-2006 12:56 AM
тАО04-04-2006 12:56 AM
Re: Regarding Tape backup
welcome to the OpenVMS ITRC forum.
Did you specify /REWIND to make sure, that the tape is being written from the beginning of the tape ?
Volker.
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тАО04-04-2006 01:12 AM
тАО04-04-2006 01:12 AM
Re: Regarding Tape backup
thanks for your prompt reply.
is it ok that i am using DDs4/DDS10 tapes and use DENS=DDS2/MEDIA=COMP in command .is it work? or i have to define tape which i am using.
and what will be data integrity in that case?
Dipali