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Date:      Fri, 22 Mar 2013 17:26:57 +0300
From:      Zeus Panchenko <zeus@ibs.dn.ua>
To:        <freebsd-fs@freebsd.org>
Subject:   RAM amount recommendations for ZFS pools with ZIL and L2ARC on SSD
Message-ID:  <20130322172657.95912@relay.ibs.dn.ua>

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hi all,

while discovering the subj, I found recommendations at:
http://doc.freenas.org/index.php/Hardware_Recommendations#RAM

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... a general rule of thumb is 1 GB of RAM for every 1TB of storage ...
If you plan to use ZFS deduplication, a general rule of thumb is 5 GB
RAM per TB of storage to be deduplicated.
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so, are these recommendations correct for ZFS pools with ZIL and L2ARC
on SSD configurations?

are there corellations between "RAM amount" and "with/without ZIL, L2ARC
on separate devices pool configuration" ?

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Zeus V. Panchenko				jid:zeus@im.ibs.dn.ua
IT Dpt., I.B.S. LLC					  GMT+2 (EET)
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