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		<title>In-line or post-process de-duplication? (updated 6-08)</title>
		<description>Discuss In-line or post-process de-duplication? (updated 6-08)</description>
		<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html</link>
		<lastBuildDate>Fri, 24 May 2013 20:11:34 +0000</lastBuildDate>
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			<title>Justin Jordan says:</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-1516</link>
			<description><![CDATA[Great article thanks for the information. Does data deduplication affect this?]]></description>
			<dc:creator>Justin Jordan</dc:creator>
			<pubDate>Tue, 07 Aug 2012 14:07:48 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-1516</guid>
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			<title>That\'s under Misconceptions/FUD</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-282</link>
			<description><![CDATA[The quote you're quoting is under the commonly held misconceptions section. That means that the statement is NOT true. I then go to explain WHY it's not true.]]></description>
			<dc:creator>W. Curtis Preston</dc:creator>
			<pubDate>Wed, 11 Jun 2008 05:48:37 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-282</guid>
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			<title>James Hutchins says:</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-281</link>
			<description><![CDATA[Sorry... should have quoted... I was talking about "An in-line de-dupe process will definitely slow down your incoming data stream." BTW... I completely agree that "Inline and VTL are not mutually exclusive".]]></description>
			<dc:creator>James Hutchins</dc:creator>
			<pubDate>Wed, 11 Jun 2008 02:47:30 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-281</guid>
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			<title>You\'re confusing the issues</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-284</link>
			<description><![CDATA[Inline and VTL are not mutually exclusive. As I said in my comments to that OTHER article, there are inline VTLs (diligent & data domain) and there are post process filesystem-based devices (Quantum when run at advertised speeds). I've tested both types of systems, but I have not done any large side-by-side comparison of inline vs post-process ingest speeds. Maybe someone else has and can comment. BTW, which comment are you talking about that you are unclear on? You're unclear as to which one you're unclear on. ;-)]]></description>
			<dc:creator>W. Curtis Preston</dc:creator>
			<pubDate>Tue, 10 Jun 2008 12:58:41 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-284</guid>
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			<title>James Hutchins says:</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-283</link>
			<description><![CDATA[I'm not clear on one of your points here. If you agree that most companies that buy VTL's to speed up their backup and recovery operations (and don't want to get off of their tape backup software) then the distinction between inline vs. post process is a critical issue. If the goal is faster backup, inline deduplication (which adds a process into the backup path) typically will not be faster than writing to a VTL, right? I agree with you that inline dedupe is faster than writing to tape, but I don't believe it is faster than writing to a VTL.]]></description>
			<dc:creator>James Hutchins</dc:creator>
			<pubDate>Tue, 10 Jun 2008 12:52:02 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-283</guid>
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			<title>Actually, you may be surprised</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-118</link>
			<description><![CDATA[Because it's disk, and reading from more disks is faster than reading from fewer disks, AND because they know they can't help the backup and hurt the restore. This should be a question for whatever vendor(s) you're considering, but most of the vendors have an answer that says restore is either the same or faster than it was before de-dupe.]]></description>
			<dc:creator>cpreston</dc:creator>
			<pubDate>Wed, 29 Aug 2007 09:22:16 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-118</guid>
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			<title>and the other way around</title>
			<link>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-116</link>
			<description><![CDATA[i guess there are systems that do the same thing for restore or not? (i don't have any expirience with de-duping yet). i mean, don't restore times suffer when the software tries to assemble all the parts from all over the place to build a 'true' image of the system? on traditional backup, you restore from your image and everything is in that one image, all bits and bytes neatly after eachother and the restore goes fa-a-a-ast. restoring one file in a de-dup setup will probably be fast enough not to notice, i but can't imagine it being just as fast when restoring a whole filesystem for example. ack, maybe i shouldn't talk about things i have never used before :lol:]]></description>
			<dc:creator>ddierickx</dc:creator>
			<pubDate>Wed, 29 Aug 2007 05:38:32 +0000</pubDate>
			<guid>http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/134-inline-or-post-process.html#comment-116</guid>
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