From owner-freebsd-fs@freebsd.org Sun Jan 20 17:18:29 2019 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C3C4A149AE25 for ; Sun, 20 Jan 2019 17:18:29 +0000 (UTC) (envelope-from ipluta@wp.pl) Received: from mx3.wp.pl (mx3.wp.pl [212.77.101.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 2019770439 for ; Sun, 20 Jan 2019 17:18:27 +0000 (UTC) (envelope-from ipluta@wp.pl) Received: (wp-smtpd smtp.wp.pl 5922 invoked from network); 20 Jan 2019 18:18:18 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wp.pl; s=1024a; t=1548004698; bh=JCgMQ8Wd8tcKeG2bJkQrnPudg3EyaaRgHTaij5Xc23M=; h=Subject:To:Cc:From; b=cjjBYVTB9lGT7ukD65Ny0s7GUKecbYXHxfW8EdZozfs0B+sNWuG396rnj247/b+vJ H38UjmJl314oZkrKVebncUnCKcquH5+jM+unUMOunM52ClN036sn8sKqXlseVZciJ3 3UUCWLtKRdzoLZe1DthydVvpHFzsMX/4jkXnZdTs= Received: from bma4.neoplus.adsl.tpnet.pl (HELO [10.0.0.79]) (ipluta@wp.pl@[83.28.220.4]) (envelope-sender ) by smtp.wp.pl (WP-SMTPD) with ECDHE-RSA-AES256-GCM-SHA384 encrypted SMTP for ; 20 Jan 2019 18:18:18 +0100 Subject: Re: ZFS on Hardware RAID To: andy thomas Cc: freebsd-fs References: <1180280695.63420.1547910313494.JavaMail.zimbra@gausus.net> <92646202.63422.1547910433715.JavaMail.zimbra@gausus.net> From: Ireneusz Pluta Message-ID: Date: Sun, 20 Jan 2019 18:18:12 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: pl X-WP-MailID: 9704427ac54d75590d26dcaae459e329 X-WP-AV: skaner antywirusowy Poczty Wirtualnej Polski X-WP-SPAM: NO 000000A [IeME] X-Rspamd-Queue-Id: 2019770439 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=wp.pl header.s=1024a header.b=cjjBYVTB; spf=pass (mx1.freebsd.org: domain of ipluta@wp.pl designates 212.77.101.9 as permitted sender) smtp.mailfrom=ipluta@wp.pl X-Spamd-Result: default: False [-2.86 / 15.00]; R_SPF_ALLOW(-0.20)[+ip4:212.77.96.0/19]; FREEMAIL_FROM(0.00)[wp.pl]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[wp.pl:+]; RCPT_COUNT_TWO(0.00)[2]; MX_GOOD(-0.01)[mx.wp.pl,mx5.wp.pl]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[wp.pl]; ASN(0.00)[asn:12827, ipnet:212.77.101.0/24, country:PL]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[wp.pl.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.99)[-0.995,0]; R_DKIM_ALLOW(-0.20)[wp.pl:s=1024a]; FROM_HAS_DN(0.00)[]; NEURAL_SPAM_SHORT(0.06)[0.064,0]; NEURAL_HAM_LONG(-1.00)[-0.999,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-fs@freebsd.org]; DMARC_NA(0.00)[wp.pl]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[9.101.77.212.list.dnswl.org : 127.0.5.0]; IP_SCORE(-0.42)[ipnet: 212.77.101.0/24(-1.18), asn: 12827(-0.94), country: PL(0.03)] X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 20 Jan 2019 17:18:29 -0000 W dniu 2019-01-20 o 09:45, andy thomas pisze: > I run a number of very busy webservers (Dell PowerEdge 2950 with LSI MegaRAID SAS 1078 > controllers) with the first two disks in RAID 1 as the FreeBSD system disk and the remaining 4 > disks configured as RAID 0 virtual disks making up a ZFS RAIDz1 pool with 3 disks plus one hot spare. In this configuration, have you ever made a test of causing a drive failure, to see the hot spare activated?