Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 65DC8E4A1 for ; Thu, 21 Feb 2013 23:12:08 +0000 (UTC) Received: (qmail 31425 invoked by uid 500); 21 Feb 2013 23:12:05 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 31393 invoked by uid 500); 21 Feb 2013 23:12:05 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 31385 invoked by uid 99); 21 Feb 2013 23:12:05 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 21 Feb 2013 23:12:05 +0000 X-ASF-Spam-Status: No, hits=-0.1 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_MED,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of btv1==7640860d484==mkjellman@barracuda.com designates 64.235.145.84 as permitted sender) Received: from [64.235.145.84] (HELO bsf04.barracuda.com) (64.235.145.84) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 21 Feb 2013 23:12:01 +0000 X-ASG-Debug-ID: 1361488299-03dc641478703570001-f7dORa Received: from bn-scl-fe05.Cudanet.local (bn-scl-fe05.cudanet.local [10.8.1.46]) by bsf04.barracuda.com with ESMTP id LdpvTuObwlXmPCco (version=TLSv1 cipher=AES128-SHA bits=128 verify=NO) for ; Thu, 21 Feb 2013 15:11:39 -0800 (PST) X-Barracuda-Envelope-From: mkjellman@barracuda.com Received: from bn-scl-be03.Cudanet.local (10.8.1.54) by bn-scl-fe05.Cudanet.local (10.8.1.46) with Microsoft SMTP Server (TLS) id 8.3.279.1; Thu, 21 Feb 2013 15:11:40 -0800 Received: from bn-scl-be03.Cudanet.local ([::1]) by bn-scl-be03.Cudanet.local ([::1]) with mapi; Thu, 21 Feb 2013 15:11:39 -0800 From: Michael Kjellman X-Barracuda-Apparent-Source-IP: ::1 To: "user@cassandra.apache.org" Date: Thu, 21 Feb 2013 15:11:38 -0800 Subject: Re: Cassandra with SAN Thread-Topic: Cassandra with SAN X-ASG-Orig-Subj: Re: Cassandra with SAN Thread-Index: Ac4QiM2Uhp69YlcJQomjFnyhJWD/qg== Message-ID: In-Reply-To: <57C7C3CBDCB04F45A57AEC4CB21C0CCD1DB3537C@mbx024-e1-nj-6.exch024.domain.local> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.3.1.130117 acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_CD4BE76C122C3mkjellmanbarracudacom_" MIME-Version: 1.0 X-Barracuda-Connect: bn-scl-fe05.cudanet.local[10.8.1.46] X-Barracuda-Start-Time: 1361488299 X-Barracuda-Encrypted: AES128-SHA X-Barracuda-URL: http://bsf04.barracuda.com:8000/cgi-mod/mark.cgi Received-SPF: softfail (barracuda.com: domain of transitioning mkjellman@barracuda.com does not designate ::1 as permitted sender) X-Barracuda-BRTS-Status: 1 X-Virus-Scanned: by bsmtpd at barracuda.com X-Barracuda-Spam-Score: 0.02 X-Barracuda-Spam-Status: No, SCORE=0.02 using per-user scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests=BSF_SPF_SOFTFAIL, HTML_MESSAGE, THREAD_INDEX, THREAD_TOPIC X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.2.123234 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.01 THREAD_INDEX thread-index: AcO7Y8iR61tzADqsRmmc5wNiFHEOig== 0.01 THREAD_TOPIC Thread-Topic: ...(Japanese Subject)... 0.00 HTML_MESSAGE BODY: HTML included in message 0.00 BSF_SPF_SOFTFAIL Custom Rule SPF Softfail X-Virus-Checked: Checked by ClamAV on apache.org --_000_CD4BE76C122C3mkjellmanbarracudacom_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable No, this is a really really bad idea and C* was not designed for this, in f= act, it was designed so you don't need to have a large expensive SAN. Don't be tempted by the shiny expensive SAN. :) If money is no object instead throw SSD's in your nodes and run 10G between= racks From: Kanwar Sangha > Reply-To: "user@cassandra.apache.org" > Date: Thursday, February 21, 2013 2:56 PM To: "user@cassandra.apache.org" > Subject: Cassandra with SAN Hi =96 Is it a good idea to use Cassandra with SAN ? Say a SAN which provi= des me 8 Petabytes of storage. Would I not be I/O bound irrespective of the= no of Cassandra machines and scaling by adding machines won=92t help ? Thanks Kanwar Copy, by Barracuda, helps you store, protect, and share all your amazing=0D things. Start today: www.copy.com. --_000_CD4BE76C122C3mkjellmanbarracudacom_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
No, this is a really really bad= idea and C* was not designed for this, in fact, it was designed so you don= 't need to have a large expensive SAN.

Don't be te= mpted by the shiny expensive SAN. :)

If money is n= o object instead throw SSD's in your nodes and run 10G between racks
<= div>
From: Kanwar Sa= ngha <kanwar@mavenir.com>Reply-To: "user@cassandra.apache.org" <user@cassandra.apache.org>Date: Thursday, February 21, 2013= 2:56 PM
To: "user@cassandra.apache.org" <user@cassandra.apache.org>= ;
Subject: Cassandra with SAN

Hi =96 Is it a good idea to use Cassandra with SAN ?  Say a= SAN which provides me 8 Petabytes of storage. Would I not be I/O bound irr= espective of the no of Cassandra machines and scaling by adding

machines = won=92t help ?

 

Thanks

K= anwar


=0D ----------------------------------
=0D Copy, by Barracuda, helps you store, protect, and share all your amazing=0D things. Start today: www.copy= .com.=0D =0D
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