[windows_errors] [What_Error_Messages_Really_Mean_IBMOS2] == OS2 WARP == " Example Backup Strategie "
- From: "albertj809" <albertj809@xxxxxxxxx>
- To: What_Error_Messages_Really_Mean_IBMOS2@xxxxxxxxxxxxxxx
- Date: Thu, 11 Mar 2004 01:31:07 -0000
Example Backup Strategies :
Here is a backup strategy for full daily backups.
Ensure NO other backup product is installed.
Create a backup set for each day of the week (TOOLS->BACKUP SETS-
>NEW from the context menu): (Monday,Tuesday etc.).
I assume these will be called (Monday, Tuesday etc.). The Monday
backup method will direct data to the Monday backup set, the Tuesday
backup method will direct data to the Tuesday backup set and so
forth.
The "changed files only" flag should be switched off and the source
will be "Allow backup of all files".
Make sure that all local drives you want backed up are in
the "Source drives scanned for backup" container (TOOLS->SOURCE
DRIVES).
You can use the refresh option from the context menu if all drives
are not present.
You can drag and drop drive icons between the top and bottom
sections.
Decide the degree of logging you want. The control panel allows you
to select "log failures only" if you don't want the log to become
too large.
Run the Monday backup. Label and insert tapes when requested. The
first tape will be called Monday-1.
The one you insert half way (if needed) through the backup will be
called Monday-2.
NOTE:
With a P200 and 64 MB of RAM we see data rates of less than 1GB per
hour.
If you have a significantly more powerful machine you may achieve a
better rate.
The backup, I have proposed includes the NET.ACC file. If "backup of
ACLs" is switched ON in the control panel, "BACKACC" will run for
each logical drive.
This may add 30 minutes to the backup time.
Check that the backup has completed successfully. Open the "backup
set container", select the "Monday backup set" and choose "view log"
from the context menu.
Files that have "NOT" been backed up for any reason will be marked
with an 'X' in the left hand column.
The most common reason for a failure is if another process on the
system has locked the file and prevented PSnS from reading it.
SystemView, for example, locks some files in this way.
You may want to shut down certain programs, before you run the
backup so that ALL files can be backed up.
NOTE:
The OS/2 system includes some log files that are locked open "Deny
Read"; therefore, not backed up.
Such files are recreated by the system so you do not have to worry
about a failure backing them up.
NOTE:
To automate the process of shutting down certain programs before a
backup runs, write a "User exit" procedure.
Example procedures are provided in the system directory and
instructions in the on-line help.
When the Monday backup completes "EMPTY" the backup set. This
ensures that you can reuse tapes Monday-1 and Monday-2 next week.
To "empty" the backup set open the backup set container, select the
Monday backup set and choose the "empty" option from the context
menu (This doesn't actually delete the data, the "index" is removed
and stored).
Create "Disaster Recovery" diskettes (Full instructions are given in
on-line help).
If you have installed the new version of PSnS, it is important to
create NEW "Disaster Recovery" diskettes, the PSnS program files on
the third diskette will only be at the prior level if new DR
diskettes are not created.
NOTE:
If you intend to restore the production system image to an
alternative machine the systems must be identical in all respects.
In particular you need to ensure that the new system can be driven
by the same set of device drivers.
Test the disaster recovery process fully on the reserve server.
Run the backup methods for the rest of the week just as you ran
Monday's.
=====================================================================
Albert
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