disaster recovery using ontape
Posted in 2003
Topics: Backup & Restore, Storage & Space Management, Versions, Editions & End-of-Life
Hi, We are putting in a machine to function as both our test and off-site
disaster recovery box. I will need to configure the new machine to be able
to come up after a restore of the database.
I recall a thread but could not find in the archives, when using ontape to
restore, the links must be EXACTLY the same. Does this carry over into the
unix /dev/vgxx/dbsxxx? I wouldn't think so, but want to confirm this with
folks. Does it also carry over into the naming conventions of the chunks?
Or will it just restore to the dbspace, as long as there is enough space
available and the names/links are exact.
IDS 7.31
Thanks in advance,
Doug
sending to informix-list
It refers simply to the chunk names used. So provided you've used links for
chunk names, the underlying devices need not have the same names.
For example, if your chunk name on the primary is appdbs_1, and is a link to
/dev/vglocal/rappdbs_1
then on your restore target your chunk name MUST also be appdbs_1, but may
be a link to /dev/vgemc/rlvol8, or any other device name, or even a file,
say /exports/informix/appdbs_1.
In IDS 9.40 this restriction is (finally!) removed, so you can do a
"re-directed restore" to any chunk name(s).
"Doug Fossmeyer" <dfossmeyer@gmx.net> wrote in message
news:bjku5a$qgs$1@terabinaries.xmission.com...
>
> Hi, We are putting in a machine to function as both our test and off-site
> disaster recovery box. I will need to configure the new machine to be
able
> to come up after a restore of the database.
>
> I recall a thread but could not find in the archives, when using ontape to
> restore, the links must be EXACTLY the same. Does this carry over into
the
> unix /dev/vgxx/dbsxxx? I wouldn't think so, but want to confirm this with
> folks. Does it also carry over into the naming conventions of the chunks?
> Or will it just restore to the dbspace, as long as there is enough space
> available and the names/links are exact.
>
> IDS 7.31
>
> Thanks in advance,
>
> Doug
>
> sending to informix-list