From owner-freebsd-questions Thu Feb 10 11:11:11 2000 Delivered-To: freebsd-questions@freebsd.org Received: from bomber.avantgo.com (ws1.avantgo.com [207.214.200.194]) by builder.freebsd.org (Postfix) with ESMTP id 58BA6457F for ; Thu, 10 Feb 2000 11:11:08 -0800 (PST) Received: from river ([10.0.128.30]) by bomber.avantgo.com (Netscape Messaging Server 3.5) with SMTP id 219; Thu, 10 Feb 2000 11:06:40 -0800 Message-ID: <0ea901bf73fa$65c76d90$1e80000a@avantgo.com> From: "Scott Hess" To: , "Jon Rust" References: Subject: Re: Vinum questions Date: Thu, 10 Feb 2000 11:09:47 -0800 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2919.6600 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG "Jon Rust" > My 2 choices: > > 1) Stripe and mirror. Gives 18G of storage, and best performance > that still has protection against drive failure. Not the most > efficient use of my drives, however. > > 2) RAID-5 all 4 of the drives in one volume. 27G of storage. Decent > performance. But... stability of RAID-5 in vinum? Make sure that RAID5 still meets your performance needs when rebuilding a drive. When we were deciding between RAID5 and RAID0+1 (on a hardware SCSI-SCSI controller), most of the performance tests came out reasonably close to each other - except when rebuilding a drive. There, RAID0+1 took a relatively minor hit, but RAID5 dropped our tps to 1/4 of the normal amount, meaning we couldn't rebuild a drive during peak usage. Later, scott To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message