[SunHELP] Reconfiguring an A1000

[Brigance, Leslie V, WWCS]

disaster plan should be fairly simple - CAREFULLY mark each drive and
slot with a number or letter
combination and if all else goes awry, put the old drives back.
Obviously make sure the D1000 array
is powered down before pulling any drives.
>From my experience I can tell you that RAID V arrays of larger disks is
MUCH slower than the smaller
spindles. And by all means stay with the stripe size Oracle recommends.

Your DBA types may be pulling their hair out. You might have to give up
some space and go to
striped mirroring on some of the drives.
Good luck.

-----Original Message-----
From: sunhelp-bounces at sunhelp.org [mailto:sunhelp-bounces at sunhelp.org]
On Behalf Of Daniel Nuno
Sent: Tuesday, May 23, 2006 9:48 PM
To: The SunHELP List
Subject: Re: [SunHELP] Reconfiguring an A1000

Hello,

Your plan looks good to me, but I think you should also consider a DR
plan,
because your downtime will be on friday and for some hours, so if you
have
any problem, will be a little bit difficult to get support or spare
parts.

Between step 5 and 6, you should consider creating the new file systems.

And depending on the amount of information and your stripe size is the
time
of the restore.

Later, could be interesting for you to consider the firmware update:

E450
RaidManager
HBA
A1000
Hard disks

My suggestion would be to start step by step on the firmware update,
don't
do too many changes at the same time.

Don't forget to run an explorer and keep it safe. To extract a module
profile from rm6 could be a good idea as well.

Regards,
Alejandro


On 5/23/06, Werth, Dave <dave.werth at garmin.com> wrote:
>
> Folks,
>
> We have an E450 running Solaris 2.7 with an attached A1000.  The A1000
> currently has eight 9 GB drives and two 18 GB drives.  Five of the 9
GB
> drives are configured in a RAID 5 array, two are RAID 1 (mirrored) and
the
> two 18 GB drives are also RAID 1.  We have one 9 GB hot spare.  We use
> Raid
> Manager 6 to administrate this.  (I know this is old stuff but it
works
> for
> us.)
>
> On Friday we will be removing all of the 9 GB drives are adding nine
18 GB
> drives for a total of eleven 18 GB drives.  One will be a hot spare
and my
> plan at the moment is to configure the rest into two 5 disk RAID 5's
(but
> I'm open to suggestions if you have a better way) but I don't plan on
> changing the logical structure of the LUN's/file systems, just
increasing
> the size of each.  One other thing, the only software on these file
> systems
> is our ERP system and Oracle databases, no system stuff (not even the
> Oracle
> executables) which is on a mirrored set in the E450 itself.
>
> So my plan is to:
> *       Shut down Oracle and the other active software.
> *       Run a full backup
> *       Unmount the file systems and delete the configurations using
RM6
> *       Shut down the system and A1000 and change out the drives.
> *       Reboot the system and reconfigure and remount the new drives
> *       Restore the backup
> *       Reboot the system and make sure everything is ok.
> *       Go home :-)
>
> Since I don't do this very often I hope some of you may have
> comments/suggestions about my plan or at least confirm that it's a
good
> plan.
>
> Thanks, Dave
>
> David Werth
> Garmin AT, Inc
> Salem, Oregon
> dave.werth at garmin.com
>
>
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--
Daniel Nuno
daniel.nuno at gmail.com
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