Re: asm versus ext3 filesystem on SAN

I will check with our unix admins regarding LVM.

On Fri, Jun 26, 2015 at 11:27 AM, Stefan Koehler <contact_at_soocs.de> wrote:

> Hi Sanjeev,
> not quite sure about Pure Storage Flash Arrays, but why do you need to
> "relocate datafiles to free up space" in case of adding SAN storage to the
> clients? However in general for SAN devices you have two possibilities to
> extend the disk space / ASM / filesystem:
>
> 1) Grow published LUN and resize it on client host (usually needs some
> manual steps in multipathing)
> 2) Add new LUN to client host and expand accordingly
>
> Both points can be done with ASM or EXT3 file systems (+LVM) - no need to
> relocate anything. EXT3 file systems can also be resized online and span
> over several LUNs with LVM.
>
> Best Regards
> Stefan Koehler
>
> Freelance Oracle performance consultant and researcher
> Homepage: http://www.soocs.de
> Twitter: _at_OracleSK
>
> > msanjeevk <sanjeevorcle_at_gmail.com> hat am 26. Juni 2015 um 19:04
> geschrieben:
> >
> > All,
> >
> > We have several custom databases (db size ranging from 40GB to 800GB )
> on NAS as flat files and plan is to move them to SAN on Pure storage -
> > concern here is whether to go with cooked filesystem(ext3) on SAN or
> configure them as ASM disks. If file system fills up we can add another
> > filesystem on SAN but would have to take downtime to relocate datafiles
> to free up space as we are still on version 11gR2(11.2.0.4) - we are still
> > not on 12c that has the online datafile move feature. ASM would provide
> flexibility with adding disks online.
> >
> > Would like to know if there are people in the group who are managing
> databases on SAN storage and how they are managing storage growth.
> >
> > Thanks,
> > Sanjeev.
>
>
>

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