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Re: Excessive Logical and Physical I/O

From: Brian Peasland <dba_at_remove_spam.peasland.com>
Date: Mon, 22 Mar 2004 15:41:44 GMT
Message-ID: <405F0938.48FA3C2D@remove_spam.peasland.com>


> > Yes. If a user changes 1GB of data and a second user needs to build a
> > read consistent image on that 1GB of data, it would take longer than if
> > only 1MB of data was involved. More data = more work.
>
> What if the second user only needed to build a read consistent image
> on 1M out of that 1G?

Building a read consistent image is on a block by block basis. If one user only needs 1MB of read consistent images, then they only rebuild the number of blocks to satisfy that request.

HTH,
Brian

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Brian Peasland
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Received on Mon Mar 22 2004 - 09:41:44 CST

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