Backing up any application faithfully requires complete knowledge of
everything that the application installs and uses. It is not
good practice to make a backup process dependent on such intimate
knowledge of the application. Things could change from release to
release, and even from patch to patch.
Our VOB server disk partitions are backed up nightly. If necessary
we could restore the whole system from backup. But if ClearCase
were blown, my choice for restoring just ClearCase would be as
I said earlier. Save the registries and license.db files. Create
a release area (if you have lost yours) and install from the release
area. Then restore the registries and license.db files.
I don't understand your question about VOBs. Installing ClearCase
won't touch the VOB storage areas. Nor the view storage, for that
matter. If you save and restore the registries you don't have to
"rebuild" a list of VOBs. That's what the registries are: lists
of vobs and views, their tags, and their storage locations.
And just because you install from a release area doesn't mean the
resulting installation on the target machine will be dependent on
the release area. Just do a full install. The "Installation &
Release Notes" do a fine job of explaining all this. Maybe it
would help if you review these again.
--Marilyn Sander
| Date: 27 Feb 2000 12:13:44 -0800
| From: c c <cc@techemail.com>
| Cc: cciug@Rational.Com
|
| On Fri, 25 February 2000, Marilyn Sander wrote:
| > There is no point in trying to backup and restore all
| > the ClearCase application files. It's much easier
| > and more reliable to simply re-install.
|
| ClearCase VOB and Reg. srvr works without the release area once it is
installed on a specific machine. Given that, restoring the ClearCase itself
without the release area will free the dependency on: 1) network access between
the VOB srvr and release area, 2) registry information between the newly created
and the existing VOB data. (That is, restoring registry data from backup will
give the quickest way to restore than rebuilding a list of VOB's registry and
possible lost of private items.
|
| Can't one just backup ClearCase restore it faithfully? If so, how are you
doing it with tape backup?
|
|
| _______________________________________________________
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Marilyn E. Sander, CM Engineer marilyn@hal.com
HAL Computer Systems (408)341-5590
1315 Dell Avenue, Campbell, CA 95008
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