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01-04-2008, 08:46 PM
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 mksysb with -p flag Hi all, My tape drive supports data compression. 1) Do I really need to use -p flag with mksysb command ? 2) Will restoration of mksysb tape fail if -p flag is not used while taking backup ? 3) How much critical -p flag is ? Does it really matters ? Thanks........ -- KPS Posted via http://dbforums.com      |
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01-04-2008, 08:46 PM
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| Re: mksysb with -p flag ketsak <member44158@dbforums.com> wrote in message news:<3570048.1068167946@dbforums.com>... > Hi all, > > My tape drive supports data compression. > > > > 1) Do I really need to use -p flag with mksysb command ? No, you don't need to. However, if your tape drive is doing hardware compression then you should do. Using the mksysb -p flag should make mksysb's faster (since no CPU cycles are being spent doing software compression) and also may make the image size smaller (as compressing a compressed file can often increase its size). > > 2) Will restoration of mksysb tape fail if -p flag is not used while > taking backup ? > No. It makes no difference to restoring. > 3) How much critical -p flag is ? Does it really matters ? > It isn't critical either way. It does matter, but only for performance and space; not for the actual functionality of mksysb. Iain. |
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