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Date:      Sun, 17 Nov 2013 19:04:21 +0400 (MSK)
From:      Dmitry Morozovsky <marck@rinet.ru>
To:        freebsd-fs@FreeBSD.org
Subject:   ZFS: Memory needed for managing L2ARC
Message-ID:  <alpine.BSF.2.00.1311171900130.8224@woozle.rinet.ru>

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Dear colleagues,

are there any "real" estimations on how much memory is needed for having 
efficient, say, 1T of L2ARC?  stable/amd64, of course.

I have backup storage server, where pool size is targeted to a few hundreds of 
terabytes (currently ~35T), and hot set is usually less than 512G-1T.

quick googling leads to some Solaris/Illumos documents, but even them are not 
bright enough in answer that.

Thanks!

-- 
Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck@FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
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