From owner-freebsd-fs@FreeBSD.ORG Fri Dec 25 00:46:31 2009 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BD7A1106568B for ; Fri, 25 Dec 2009 00:46:31 +0000 (UTC) (envelope-from wonslung@gmail.com) Received: from mail-ew0-f226.google.com (mail-ew0-f226.google.com [209.85.219.226]) by mx1.freebsd.org (Postfix) with ESMTP id 5077E8FC0A for ; Fri, 25 Dec 2009 00:46:31 +0000 (UTC) Received: by ewy26 with SMTP id 26so5207014ewy.3 for ; Thu, 24 Dec 2009 16:46:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=npSItJ52yU1y8qTUA3PCCgXw3J0Co57aY2CYPf3NmcY=; b=KSDb0esHMa5HebDwqN1lRy3wmdy7SbOBU9c3rZbvR4IRpLqRnI9zueMbKjli+kqOAN t1oFZ+auxKcXXWUccC9dsU+5xec0cqy7B3EnETDjWS/n641YIvAyM4moS7QHYPtyR4rb hAeOxNXDdcOMv8Lh/qT4/8I2/UE90zTTWJsx8= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=wGGxQlJUORsH7VE1x8ktfWAgTaJp6MUpxX+BU2dsbEm3oml2YYoQh6OXjOfB3lhz8U P6SzQjopcZYeFC7naF0apeEtTj1bo8ug+ypfj9ZZaVsZWAr93CJj+9cVDY0GuhV7yUgr 9cyMRC6QMCuMCv55AFKdSqQKTMQp+We44qLyI= MIME-Version: 1.0 Received: by 10.216.88.138 with SMTP id a10mr3185885wef.163.1261701990199; Thu, 24 Dec 2009 16:46:30 -0800 (PST) In-Reply-To: References: <568624531.20091215163420@pyro.de> <42952D86-6B4D-49A3-8E4F-7A1A53A954C2@spry.com> <957649379.20091216005253@pyro.de> <26F8D203-A923-47D3-9935-BE4BC6DA09B7@corp.spry.com> <1696529130.20091223212612@pyro.de> Date: Thu, 24 Dec 2009 19:46:30 -0500 Message-ID: From: Thomas Burgess To: Ronald Klop Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-fs@freebsd.org Subject: Re: ZFS RaidZ2 with 24 drives? X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Dec 2009 00:46:31 -0000 On Thu, Dec 24, 2009 at 11:53 AM, Ronald Klop wrote: > Isn't it write caching? > My Solaris machine at work also flushes the data every 30 seconds. > > Ronald. > > I think you are right. ZFS does work in bursts...it's very different than what most people expect. I know it was really weird to me when i first saw it.