From owner-freebsd-questions@FreeBSD.ORG Tue Jul 16 19:48:24 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id B4349260 for ; Tue, 16 Jul 2013 19:48:24 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from st11p05mm-asmtp001.mac.com (st11p05mm-asmtpout004.mac.com [17.172.108.249]) by mx1.freebsd.org (Postfix) with ESMTP id 8C594DCE for ; Tue, 16 Jul 2013 19:48:24 +0000 (UTC) Received: from cswiger1.apple.com (unknown [17.209.8.53]) by st11p05mm-asmtp001.mac.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Jan 3 2012)) with ESMTPSA id <0MQ10029NOCK7D70@st11p05mm-asmtp001.mac.com> for freebsd-questions@freebsd.org; Tue, 16 Jul 2013 19:48:22 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.10.8794,1.0.431,0.0.0000 definitions=2013-07-16_08:2013-07-16,2013-07-16,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=6.0.2-1305010000 definitions=main-1307160168 Content-type: text/plain; charset=iso-8859-1 MIME-version: 1.0 (Mac OS X Mail 6.5 \(1508\)) Subject: Re: to gmirror or to ZFS From: Charles Swiger In-reply-to: Date: Tue, 16 Jul 2013 12:48:20 -0700 Content-transfer-encoding: quoted-printable Message-id: References: <4DFBC539-3CCC-4B9B-AB62-7BB846F18530@gmail.com> <976836C5-F790-4D55-A80C-5944E8BC2575@gmail.com> <51E51558.50302@ShaneWare.Biz> <51E52190.7020008@fjl.co.uk> <6CE5718E-2646-4D8C-AF98-37384B8851C5@mac.com> To: Johan Hendriks X-Mailer: Apple Mail (2.1508) Cc: freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Jul 2013 19:48:24 -0000 Hi-- On Jul 16, 2013, at 11:27 AM, Johan Hendriks = wrote: >> Well, "don't do that". :-) >=20 > When the server reboots because of a powerfailure at night, then it = boots. > Then it starts to rebuild the mirror on its own, and later the fsck = kicks in. >=20 > Not much i can do about it. >=20 > Maybe i should have done it without the automatic attachment for a new = device. It's normally the case that getting a hot spare automatically attached = should be fine, but not if you also have the box go down entirely and need to = fsck. I'm more used to needing to explicitly physically swap out a failed = mirror component, in which case one can make sure the system is OK before the replacement = drive goes in. > [ ... ] >>> Before people tell me to use an UPS, i used a UPS but the damn thing = gave >>> way itself. Then after it came back from the warranty repair it = gave way again. >>=20 >> Grr. That's when you want find another UPS vendor. >=20 > Is apc not the right choice? > I think i got a monday morning model. > Some times things fail! APC is decent for desktops, but I'm dubious about them when it comes to = entire racks or a DC. I like Leviton's PDUs/MDUs and TVSS; for a medium-sized UPS = (10-40 kVA) Liebert and PowerWare (now Eaton) were good. Liebert's PDUs are also = pretty good. Regards, --=20 -Chuck PS: I ran a small DC in NYC with a 20kVA PowerWare 9330 behind a Leviton = 57000 TVSS; the Cupertino locals have ~650kVA worth of Bloom boxes and a Cummins = diesel genset as a backup just for this building.