Disaster Recovery

[Greg jones Jones]

I'm attempting to define a disaster recovery plan for our company. I've
concluded that Ignite is the OS solution. Any help on the following questions
would be appreciated.

1. Is Ignite a good solution for disaster recovery?

2. Is it a good idea to lay over the ignite recovery with incremental backups
from other products (ADSM,Legato)?

3. What are some common disaster recovery plans that are being used for HP-UX?

[Brett Mackie_1]

The Ignite/UX is an excellent way of disaster recovery services for HP-UX. It
does have some limitations that you need to be aware of: -

1. The make_recovery program only copies software and files, etc., that are in
the 'root' filesystem.
2. You can add applications so that they are copied but the apps must be in the
IPD (Installed Products Database), i.e., installed using HP Software
Distributor.
3. On certain hardware platforms, i.e., N class, a certain version is required
otherwise the make_recovery does not work at all. I think, from memory, that
you need V2.2 for it to work.
4. When recovering, the fail-over system needs to have reasonably similar
hardware otherwise things get sticky.

I recently created a DR environment in the HP-UX 11.x environment on N class
machines with common disk on an XP256 disk array. The implementation of the
disk array needed to be very carefully designed and configured so that all
disks were available to both systems at the same time. This setup made the HP
CE cringe but he was able to set it up so that the disks were only mounted on
one system at a time. (Extreme caution and understanding of the infrastructure
is required when coinfiguring this way).

The bottom line is that it works and works well! The N class failover took
about 45 minutes to complete and with some automation (scripts) to realign the
disks and volume groups, it was almost fool-proof.

To me it was a very good option.

Hope that helps!
Brett Mackie
Tripoint Corporation

[Karim Hachimi_1]

Did you define what a disaster means in your envirement ??
I think that is the first step to have a good Plan.
Also what hardware do you have ?? what software ?? to what kind of menaces is
your Server disposed ?
"worst is a nuclear Bomb...Would u still need to have your system UP?" ...What
is the impact of down time ?? are other country's or states involved with u'r
business ?

Ones you have answer the questions you can define what you need. and how much
money you need.