From oracle-l-bounce@freelists.org Tue Jul 12 10:54:17 2005 Return-Path: Received: from air891.startdedicated.com (root@localhost) by orafaq.com (8.12.10/8.12.10) with ESMTP id j6CFsG6T015078 for ; Tue, 12 Jul 2005 10:54:16 -0500 X-ClientAddr: 206.53.239.180 Received: from turing.freelists.org (freelists-180.iquest.net [206.53.239.180]) by air891.startdedicated.com (8.12.10/8.12.10) with ESMTP id j6CFsBIP015037 for ; Tue, 12 Jul 2005 10:54:11 -0500 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 8DADF1CC262; Tue, 12 Jul 2005 10:52:42 -0500 (EST) Received: from turing.freelists.org ([127.0.0.1]) by localhost (turing [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 31352-01; Tue, 12 Jul 2005 10:52:42 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 01CC21CC132; Tue, 12 Jul 2005 10:52:41 -0500 (EST) X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C586F9.C4C45536" Subject: Q:To ASM or Not to ASM Date: Tue, 12 Jul 2005 18:52:55 +0300 Message-ID: <5A841A20A9085A4C984EADD0FF97BF3704F309@ectilex.ectel.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Q:To ASM or Not to ASM Thread-Index: AcWG+cScxc6Fe4anSXKcS7i/teinuQ== From: "Amihay Gonen" To: X-archive-position: 22344 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-To: oracle-l-bounce@freelists.org X-original-sender: AmihayG@ectel.com Precedence: normal Reply-To: AmihayG@ectel.com X-list: oracle-l X-Virus-Scanned: by amavisd-new-20030616-p9 (Debian) at avenirtech.net X-mailscan-MailScanner-Information: Please contact the ISP for more information X-mailscan-MailScanner: Found to be clean X-MailScanner-From: oracle-l-bounce@freelists.org X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on air891.startdedicated.com X-Spam-Status: No, hits=-2.9 required=5.0 tests=AWL,BAYES_00, HTML_FONTCOLOR_RED,HTML_MESSAGE autolearn=no version=2.63 ------_=_NextPart_001_01C586F9.C4C45536 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable I've some questions on ASM (automatic storage management ) =20 I've read a lot of materials on this issue , I think ASM is a good concept in simplify the installation & maintenance of oracle database. =20 I work in R&D in my organization , and we need to decided if to cooperate ASM instead of some other LVM. =20 I build a small list of advantanges and disadvantages on ASM , and some questions . I would like to hear you comments . =20 Advantanges: 1. Simply configuration and maintenance. (same layout ,with regard to O/S type . The only change is the numbers of disk per disk group) 2. Reduce extra level of LVM (reduce price , same vendor in all the stack ). 3. Performance (raw device access , striping in extent level ) =20 disadvantages: 1. New technology . Not wide speared , most IT doesn't have enough knowledge in this area.=20 2. Backup & recovery must be done using RMAN . 3. Single point of failure - If ASM instance is down ( , I'm not sure about this point). =20 My questions are : 1. Do you think that ASM will be acceptable next year as LVM solution for oracle database in big companies ? 2. Do you think that ASM can be fine tuned as you can tune in a file base level installation ?=20 =20 Amihay Gonen DBA =20 ------_=_NextPart_001_01C586F9.C4C45536 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

I've = some questions=20 on ASM (automatic storage management )

I've = read a lot of=20 materials on this issue , I think ASM is a good concept in simplify the=20 installation & maintenance of oracle database.

I work = in R&D in=20 my organization , and we need to decided if to cooperate ASM instead of = some=20 other LVM.

I = build a small list=20 of advantanges and disadvantages on ASM , and some questions . I would = like to=20 hear you comments .

Advantanges:

1. = Simply=20 configuration and maintenance. (same layout ,with regard to O/S type . = The only=20 change is the numbers of disk per disk group)

2. = Reduce extra=20 level of LVM (reduce price , same vendor in all the stack = ).

3. = Performance (raw=20 device access , striping in extent level )

disadvantages:

1. New = technology .=20 Not wide speared , most IT doesn't have enough knowledge in this area.=20

2. = Backup &=20 recovery must be done using RMAN .

3. = Single point of=20 failure - If ASM instance is down ( , I'm not sure about this=20 point).

My = questions are=20 :

1. Do = you think that=20 ASM will be acceptable next year as LVM solution for oracle database in = big=20 companies ?

2. Do = you think that=20 ASM can be fine tuned as you can tune in a file base level installation = ?=20

Amihay Gonen
DBA

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