From owner-freebsd-fs@FreeBSD.ORG Thu Oct 10 22:38:43 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 67B81741 for ; Thu, 10 Oct 2013 22:38:43 +0000 (UTC) (envelope-from lkchen@ksu.edu) Received: from na01-by2-obe.outbound.protection.outlook.com (mail-by2lp0243.outbound.protection.outlook.com [207.46.163.243]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 297C62437 for ; Thu, 10 Oct 2013 22:38:42 +0000 (UTC) Received: from BN1PR05MB264.namprd05.prod.outlook.com (10.141.65.26) by BN1PR05MB262.namprd05.prod.outlook.com (10.141.65.20) with Microsoft SMTP Server (TLS) id 15.0.775.9; Thu, 10 Oct 2013 22:38:34 +0000 Received: from BN1PR05MB264.namprd05.prod.outlook.com ([10.141.65.26]) by BN1PR05MB264.namprd05.prod.outlook.com ([10.141.65.26]) with mapi id 15.00.0785.001; Thu, 10 Oct 2013 22:38:35 +0000 From: Lawrence Chen To: "freebsd-fs@freebsd.org" Subject: RE: RAM and zfs and multiple disks Thread-Topic: RAM and zfs and multiple disks Thread-Index: AQHOxds8JZjJ9r5/Qk2N1XpVIGDhepnuZGUAgAAflcM= Date: Thu, 10 Oct 2013 22:38:34 +0000 Message-ID: <08bab77efc4a4bdabc399c6576e3420a@BN1PR05MB264.namprd05.prod.outlook.com> References: <20131010170724.GA19751@potato.growveg.org>, In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [129.130.0.181] x-forefront-prvs: 0995196AA2 x-forefront-antispam-report: SFV:NSPM; SFS:(51704005)(377454003)(189002)(199002)(24454002)(54316002)(56776001)(85306002)(81686001)(76482001)(65816001)(66066001)(80022001)(74366001)(79102001)(77982001)(63696002)(59766001)(15975445006)(81816001)(74876001)(74706001)(83072001)(69226001)(15202345003)(47736001)(49866001)(50986001)(47976001)(46102001)(51856001)(53806001)(4396001)(74662001)(74502001)(19580405001)(83322001)(75432001)(54356001)(80976001)(19580395003)(47446002)(31966008)(81542001)(74316001)(76796001)(76786001)(76576001)(81342001)(33646001)(56816003)(24736002); DIR:OUT; SFP:; SCL:1; SRVR:BN1PR05MB262; H:BN1PR05MB264.namprd05.prod.outlook.com; CLIP:129.130.0.181; FPR:; RD:InfoNoRecords; MX:1; A:1; LANG:en; Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: ksu.edu X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Oct 2013 22:38:43 -0000 I have a couple of SFF Atom D2700's, so max memory is 4GB. That I've been = running as headless servers.... Were FreeBSD 9.1, upgraded to 9.2 last wee= kend. Though just a couple of 120GB SSDs in them. Been going pretty goo= d.=0A= =0A= dedup is probably out, though they say L2ARC can help....no plans to add mo= re storage to these.=0A= =0A= One of the servers is really busy (cacti)....load is usually 12+, since upg= rading to FreeBSD 9.2 and switching to lz4....load is often just under 10..= ..=0A= =0A= --=0A= Who: Lawrence K. Chen, P.Eng. - W0LKC - Sr. Unix Systems Administrator=0A= For: Enterprise Server Technologies (EST) -- & SafeZone Ally=0A= =0A= ________________________________________=0A= From: owner-freebsd-fs@freebsd.org on behalf= of Morgan Jones =0A= Sent: Thursday, October 10, 2013 15:34=0A= To: freebsd-fs@freebsd.org=0A= Subject: Re: RAM and zfs and multiple disks=0A= =0A= I've FreeBSD with 8gb of ram and no swap for years. I'm currently on 9.0 6= 4-bit.=0A= =0A= I have 2 zfs pools:=0A= one is a pair of 16gb thumb drives for /=0A= the other is 4x2tb + 2x500gb mirror for 10 or so mount points=0A= =0A= It runs with zero problems. In FreeBSD 8.x I had to set the arc max to kee= p from memory starving other processes but 9.0 has been fine. 32-bit was a= disaster--I couldn't keep it from crashing.=0A= =0A= I'm not running dedup.=0A= =0A= -morgan=0A= =0A= =0A= On Oct 10, 2013, at 1:07 PM, John wrote:= =0A= =0A= > Hello list,=0A= >=0A= > I'd like to have zfs on my freebsd desktop. However,=0A= > this motherboard can take 8GB RAM, max.=0A= >=0A= > I'd like to get 2 x4Tb drives. Realistically, do I=0A= > need another motherboard? The primary reason to have ZFS=0A= > is to guard against bitrot.=0A= >=0A= > thanks,=0A= > --=0A= > John=0A= > _______________________________________________=0A= > freebsd-fs@freebsd.org mailing list=0A= > http://lists.freebsd.org/mailman/listinfo/freebsd-fs=0A= > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"=0A= =0A= _______________________________________________=0A= freebsd-fs@freebsd.org mailing list=0A= http://lists.freebsd.org/mailman/listinfo/freebsd-fs=0A= To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"=0A=