Hi
We are currently looking at implementing a disaster recovery stratergy. We
are going for backup machines at a remote site. My question pertains to
the duplication of the filesystems to those remote machines, mainly with
respect to database integrity. We have around 8 alpha boxes each of which
run an oracle database on advanced filesystems -- the boxes are independent
of each other To duplicate the data we are looking at two scenarios:
*Periodically* clone the filesets, apply the archive journals to the
remote oracle database and pick any other miscellaneous non-database
files we need from it.
Use some third party product that provide a sort of disk mirroring over
the network -- I believe by utilising nfs. The products we have in mind
are:
Uniq Software Services UP Filesystem -- or UPFS
Programmed Logics SnapShot
Remote Shadow Option by someone who I don't know
Method 1. ensures database integrity but does mean that the recovery
systems will be a *period* behind the real thing. There will also be
performance degradation in making the clone and when the remote machine
accesses the clone via nfs.
Method 2. I am unsure about how the mirroring software works and am
sceptical that it can provide the sort of data duplication necessary to
keep the oracle databases happy. I'm sure that it could provide filesystem
integrity but if the primary box crashes with the oracle database open and
writing -- surely the backup database will be compromised?
My questions are:
Has anyone had any experience with the aforementioned disk mirroring
products? In conjunction with AdvFS?
Experience with DR and the above software products ability to do the *job*?
Is there a site I can go that has papers on DR implementation?
Your input will be appreciated -- and summarised at a later point,
Jason.
Received on Tue Sep 02 1997 - 13:12:16 NZST