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XFS memory recomendation?

To: "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
Subject: XFS memory recomendation?
From: "Assarsson, Emil" <Emil.Assarsson@xxxxxxxxxxxxxxxx>
Date: Thu, 16 Feb 2012 12:50:57 +0100
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Thread-topic: XFS memory recomendation?
Hi,

Are there any recommendations about how much memory I need based on the size of 
the file system and/or amount of files?
For example: how much memory would be optimal for a 20TB file system with 
3000000 files? 

I guess it depends on the usage pattern?
Is there any way to make sure that the file allocation table stays in the 
memory?

Best regards
Emil Assarsson

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