I am using D3 NT and rely on the FILE-SAVE command to save and restore
the data on an alternate system in the even of a crash. However, I
was wondering if anyone knows of or uses a commercial software package
that can replicate a live D3 NT system so I can avoid the down-time of
restoring from the latest file-save?

On Jul 13, 10:16*am, Jay <jcarr... (AT) labhealth (DOT) com> wrote:
You would need a duplicate set of licenses to do what I think you are
trying to do. It sounds like you want to have a "fail-safe" system,
duplicating the updates of your "live" system, which is what would be
necessary to avoid restoring from a file-save. This is certainly not
an uncommon environment, but in order to do so, your "fail-
safe" (backup) system has to be licensed (maybe not at the full-cost
per license) for as many users as you want to be able to use the
secondary system. You will most likely need to look at redundant
networking, as well, so that, if you have to switch over to a backup
system, your users are able to connect to that system.

Lots to consider to make this plan work properly, and timely - again,
if I am reading your question, properly.

Good luck.

Jim Cronin
Kittery Trading Post

On Jul 13, 11:42*am, JJCSR <JCro... (AT) ktp (DOT) com> wrote:
Yes, you are correct on all counts.

Jay wrote:
Jay - D3v9 now has HotBackup just for that purpose. Call TL. Don't
quote me, but I believe the cost for a secondary system is %15 of the
primary.

That replicates your data but you still need to ensure that if the
primary fails that the secondary can kick in automatically, or with
minimal manual attention. Users connecting to IP address 101 now need
to switch to 102 - which can be handled through DNS management. In a
transition, users will have their sessions interrupted and will need
to re-connect in. The severity of this interruption depends on how
your app is designed. TL can probably provide tips for minimizing
that pain as well.

HTH
T

On Jul 13, 3:41*pm, Tony Gravagno <tony_grava... (AT) nospam (DOT) invalid>
wrote:
Thanks Tony. I'll look into it.

On Jul 13, 4:24*pm, Jay <jcarr... (AT) labhealth (DOT) com> wrote:
We were hoping to avoid upgrading to v9 since the systems are already
in place.

To claify, the solution that Jay is looking for is a commercial package like
Double-Take.

We are aware of the TL hot-backup solutions.

Has anyone ever done this using any commercial software?

Thanks,
Jeff

"Jay" <jcarroll (AT) labhealth (DOT) com> wrote

On Jul 13, 7:16*am, Jay <jcarr... (AT) labhealth (DOT) com> wrote:
NT ? Are you trying to set a record ?

On Jul 14, 4:38*am, "Jeff Caspari" <mu... (AT) idt (DOT) net> wrote:
The problem is you have a active file system that no commercial
software is going to understand. You can obviously use any type of os
level replication or even san replication, but your second copy when
you bring it on line will act just like if the power was pulled. Your
VME will be your biggest concern and you will probably have some GFE's
spread around the FSI.

Keep in mind this is no different for any other database, such as SQL
Server. You cannot just replicate a SQL store to a second server and
expect it to work cleanly, instead you are supposed to use SQL
replication or a special built internal SQL tool.

On Jul 14, 4:38*am, "Jeff Caspari" <mu... (AT) idt (DOT) net> wrote:
you might want to touch base with ross ferris at stamina software...