Date: Fri, 7 Jan 2011 05:16:35 -0600 From: "Matthew D. Fuller" <fullermd@over-yonder.net> To: Daniel Kalchev <daniel@digsys.bg> Cc: freebsd-stable@freebsd.org Subject: Re: ZFS - moving from a zraid1 to zraid2 pool with 1.5tb disks Message-ID: <20110107111635.GL28453@over-yonder.net> In-Reply-To: <4D25C760.4070703@digsys.bg> References: <ifsia5$5ub$2@dough.gmane.org> <4D21E679.80002@my.gd> <84882169-0461-480F-8B4C-58E794BCC8E6@my.gd> <BEBC15BA440AB24484C067A3A9D38D7E0149F32D13E3@server7.acsi.ca> <488AE93A-97B9-4F01-AD0A-0098E4B329C3@my.gd> <AANLkTimezasVY%2BMJjWn2T9sBGQV-JrNmYqRwv_gPYPJP@mail.gmail.com> <CC37553B-EE13-4B5B-AC87-80D0ECC1A2B3@my.gd> <BEBC15BA440AB24484C067A3A9D38D7E0149F32D33F9@server7.acsi.ca> <4D25BF91.7070304@my.gd> <4D25C760.4070703@digsys.bg>
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On Thu, Jan 06, 2011 at 03:45:04PM +0200 I heard the voice of Daniel Kalchev, and lo! it spake thus: > > You should also know that having large L2ARC requires that you also > have larger ARC, because there are data pointers in the ARC that > point to the L2ARC data. Someone will do good to the community to > publish some reasonable estimates of the memory needs, so that > people do not end up with large but unusable L2ARC setups. Estimates I've read in the past are that L2ARC consumes ARC space at around 1-2%. -- Matthew Fuller (MF4839) | fullermd@over-yonder.net Systems/Network Administrator | http://www.over-yonder.net/~fullermd/ On the Internet, nobody can hear you scream.
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