From owner-freebsd-performance@FreeBSD.ORG  Tue Sep  2 12:42:45 2003
Return-Path: <owner-freebsd-performance@FreeBSD.ORG>
Delivered-To: freebsd-performance@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 1896716A4BF; Tue,  2 Sep 2003 12:42:45 -0700 (PDT)
Received: from Chow.corp.media.net (rottie.media.net [66.113.65.4])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 472B343FFB; Tue,  2 Sep 2003 12:42:44 -0700 (PDT)
	(envelope-from max.clark@media.net)
Received: from MCLARK (76.0.6.10.IN-ADDR.ARPA [10.6.0.76]) by
          Chow.corp.media.net (Netscape Messaging Server 4.15) with SMTP
          id HKLQJB00.83I; Tue, 2 Sep 2003 12:37:59 -0700 
From: "Max Clark" <max.clark@media.net>
To: <freebsd-questions@freebsd.org>,
	<freebsd-performance@freebsd.org>, <freebsd-hackers@freebsd.org>
Date: Tue, 2 Sep 2003 12:48:29 -0700
Message-ID: <ILENIMHFIPIBHJLCDEHKIEMEDCAA.max.clark@media.net>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Priority: 3 (Normal)
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0)
Importance: Normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
Subject: FW: 20TB Storage System
X-BeenThere: freebsd-performance@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Performance/tuning <freebsd-performance.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-performance>,
	<mailto:freebsd-performance-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-performance>
List-Post: <mailto:freebsd-performance@freebsd.org>
List-Help: <mailto:freebsd-performance-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-performance>,
	<mailto:freebsd-performance-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 02 Sep 2003 19:42:45 -0000

Sorry for the cross post.

-----Original Message-----
From: owner-freebsd-isp@freebsd.org
[mailto:owner-freebsd-isp@freebsd.org]On Behalf Of Max Clark
Sent: Tuesday, September 02, 2003 11:00 AM
To: freebsd-isp@freebsd.org
Subject: 20TB Storage System


Hi all,

I need to attach 20TB of storage to a network (as low cost as possible), I
need to sustain 250Mbit/s or 30MByte/s of sustained IO from the storage to
the disk.

I have found external Fibre Channel -> ATA 133 Raid enclosures. These
enclosures will house 16 drives so with 250GB drives a total of 3.5TB each
after a RAID 5 format. These enclosures have advertised sustained IO of
90-100MByte/s each.

One solution we are thinking about is to use a Intel XEON server with 3x FC
HBA controller cards in the server each attached to a separate storage
enclosure. In any event we would be required to use ccd or vinum to stripe
multiple storage enclosures together to form one logical volume.

I can partition this system into two separate 10TB storage pools.

Given the above:
1) What would my expected IO be using vinum to stripe the storage enclosures
detailed above?
2) What is the maximum size of a filesystem that I can present to the host
OS using vinum/ccd? Am I limited anywhere that I am not aware of?
3) Could I put all 20TB on one system, or will I need two to sustain the IO
required?
4) If you were building this system how would you do it? (The installed $/GB
must be below $5.00 dollars).

My other options are to use Solaris or Windows (which I would rather not
do).

Thanks in advance,
Max

_______________________________________________
freebsd-isp@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-isp
To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org"