RE: ASM over SLVM

From: Job Miller <jobmiller_at_yahoo.com>
Date: Thu, 28 Dec 2006 12:06:25 -0800 (PST)
Message-ID: <20061228200625.54160.qmail@web53909.mail.yahoo.com>

some aspects of an LVM are redundant with ASM and therefore add unnecessary complexity, while others are not, and may add benefit to your management, so using ASM's features for what it is good for, and your LVM for the things ASM doesn't do is one approach.

i don't think it is a marketing vs. technology issue, it is just that many things done by an LVM (like stripping, mirroring, or concatenation) are better done by ASM for Oracle db files.

Job

Kevin Closson <kevinc_at_polyserve.com> wrote:

DIV { MARGIN: 0px } no surprise...the technology and marketing angle do not intersect

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Naqi Mirza Sent: Thursday, December 28, 2006 10:39 AM To: oracle-l_at_freelists.org
Subject: Re: ASM over SLVM

From the HP-UX 10g Oracle RAC and clusterware install guide, page 105 of the pdf version, last bullet point in the page:

Although you can specify a logical volume as a device in an Automatic Storage Management disk group, Oracle does not recommend their use...... . From the same guide on page 104, 4th point:
For each disk that you want to add to a disk group, enter the following command on any node to verify that it is not already part of an LVM volume group: # /sbin/pvdisplay /dev/dsk/cxtydz If this command displays volume group information, the disk is already part of a volume group. The disks that you choose must not be part of an LVM volume group.

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Received on Thu Dec 28 2006 - 14:06:25 CST