From: Dhotre, Shekhar (Shekhar.Dhotre@T-T.COM)
Date: Mon Jul 08 2002 - 14:57:18 EDT
>Solaris ships with driver support
>for a variety of hardware architectures (with the SPARC family), and
>there is usually no problem recovering one Sun machine to another.
Are you saying that
I can restore backup of SunE450 to ultra2 system and spnode`s backup to F30
system ?
When I configured BMR last time ,I was not able to restore E450 system to
ultra2.I still have the CD and I can configure it to test dissimilar
architecture restore, if someone from veritas confirms this.
-----Original Message-----
From: Ray Schafer [mailto:schafer@TKG.COM]
Sent: Monday, July 08, 2002 2:13 PM
To: aix-l@Princeton.EDU
Subject: Re: Bare Metal Restore
I have worked with BMR for quite some time. I am originally from TKG,
and now am part of VERITAS. I would like to clear up some of the
confusion here.
BMR has a lot of advantages over sysback or mksysb. Not the least of
which is that sysback and mksysb cannot use incremental backups to
recover. They are always full system backups - time consuming, use lots
of resources, and aren't done as often.
It is true that Dissimilar Machine Restore is not "supported". You must
understand what this means. It means that we do not test the procedure
nor educate the support folks on how to answer calls from people trying
to do this. It doesn't mean it cannot be done. Dissimilar Machine
Recovery (DMR) is a complicated product we are working on now. This
mainly has to do with recovering windows machines (IBM Netfinity with
RAID to a Dell Perc2 system). However, right now, UNIX is much easier
to do dissimilar machine recovery. Solaris ships with driver support
for a variety of hardware architectures (with the SPARC family), and
there is usually no problem recovering one Sun machine to another. BMR
can also recover AIX to different architectures fairly painlessly. You
may or may not have to perform some manual interaction - much like you
do with sysback. On AIX it is very easy. If you know ahead of time that
you will be restoring one machine to another (say a an old 580
microchannel to an H80), you can install the hardware support for PCI
and CHRP onto the 580, do an incremental backup and use BMR to restore
to the H80 machine. No problem.
Most of the time, however, you will not know in advance. Even machines
as different as an old microchannel machine to a new CHRP machine is
possible. I have done it, and it is not that hard. All you do is use
BMR, but select the "Dissimilar Disk Restore" option on the Client's
"Prepare to Restore" screen on the BMR GUI. Then network boot the
machine. It will discover the drives, send the drive info back to the
BMR server, and update the Client state to "WFDDR". You then perform
the drive mapping, and the machine will continue to restore the machine.
BMR will create the volume groups onto the drives you chose, create the
logical volumes, make the files systems, and restore all the data from
either TSM or NetBackup. After all the data is recovered, the last step
will fail if the restored machine does not have the hardware support for
the new hardware. Let it fail. Then put in the AIX Install CD, boot
from the CDROM, choose the menu that allows you to enter a maintenance
shell after importing the Volume Group. Then: 1) run cfgmgr -i
/cdrom/usr/sys/inst.images. 2) bosboot -a -d /dev/hdiskXX. 3) bootlist
-m normal hdiskXX. Reboot and you're done. Not hard at all.
Marcelino Mata wrote:
>I believe that working against different architectures is marketed as
>"Intelligent Disaster Recovery". Unfortunately I have learned that
>companies like Veritas mis-market that also. We have a Intelligent
Disaster
>Recovery agent or Netbackup MS-Windows and we found out afterwards
that it
>only works if the same server configuration is replaced. Changing
NIC cards
>or Video cards will cause the recovery to fail. Atleast that was
what I was
>told 1 year ago. It was a cheap option for Windows clients unlike
the UNIX
>bare metal restore for Netbackup. I am little puzzled why a AIX
site would
>not just use something like Sysback for AIX. Then again, I did not know
>that the repackaged UNIX bare metal restore for Netbackup supports
AIX. The
>last time I looked at the product in only supported Solaris and one more
>UNIX (before the Kernel Group became a company within Veritas)
>
>Marcelino
>
>-----Original Message-----
>From: justin.bleistein@SUNGARD.COM [mailto:justin.bleistein@SUNGARD.COM]
>Sent: Friday, July 05, 2002 3:29 PM
>To: aix-l@Princeton.EDU
>Subject: Re: Bare Metal Restore
>
>
>What's the point of a Bare metal restore product that doesn't work
across
>different platforms?
>
>--Justin Richard Bleistein
>
>
>
>
> Dave.Zarnoch@SUNG
> ARD.COM To:
aix-l@Princeton.EDU
> Sent by: IBM AIX cc:
> Discussion List Subject: Re: Bare Metal
>Restore
> <aix-l@Princeton.
> EDU>
>
>
> 07/05/2002 03:17
> PM
> Please respond to
> IBM AIX
> Discussion List
>
>
>
>
>
>
>Bill,
>
>We were going to use BMR but found that it will not function
>on dissimilar architectures.
>(According to BMR(Veritas) sales)
>
>This basically stopped us since our DRs are done on different systems.
>
>Dave Zarnoch
>UNIX Systems Administration
>SunGard eSourcing
>600 Laurel Oak Rd.
>Voorhees, NJ 08043
>Dave.Zarnoch@sungard.com
>(856)566-5022
>
>
>
> Bill Verzal
> <Bill_Verzal@BCBS To:
> aix-l@Princeton.EDU
> IL.COM> cc:
> Sent by: IBM AIX Subject: Bare Metal
Restore
> Discussion List
> <aix-l@Princeton.
> EDU>
>
>
> 07/05/2002 02:59
> PM
> Please respond to
> IBM AIX
> Discussion List
>
>
>
>
>
>
>Anyone out there using Bare Metal Restore (Veritas) ?
>
>We are looking at it (actually, it is probably a bit farther along than
>"looking at it"), and I had a question on how it handles restoring
from a
>physically different system then the original backup. For example -
in a
>disaster recovery or test.
>
>I'm concerned about ODM issues and other stuff like that.
>
>Anyone crossed this bridge before ?
>
>Thanks, Bill.
>
>---------------------------------------------------------------------------
-
>-------------------------------
>
>
>
>Bill Verzal
>Technical Consultant
>Forbes Technical Consulting
>(312) 653-3684
>bill_verzal@bcbsil.com
>MailStop: 27.201C
>
This archive was generated by hypermail 2.1.7 : Wed Apr 09 2008 - 22:16:02 EDT