Forum Discussion

hraju's avatar
hraju
Level 4
15 years ago

Global Cluster, can you verify my config - setup - architecture ?

I need to build a Disaster Recovery using Veritas Cluster and VVR. I need to have HA on Oracle 10g and Tomcat. This should be cheap as possible. This is not so data-intensive application. This would...
Basics
Best Practice
business continuity
Cluster Server
Installing
Windows
  • Wally_Heim's avatar
    Wally_Heim
    15 years ago
    If you are concerned with loosing 1 site enirely then you should have domain controllers avaialable at each site.  Having doman controllers at each site is good if you loose communications completely between the sites.  The DC at both sites will ensure that site is usable even without access to anything from the other site.

    -Wally
Wally_Heim's avatar
Wally_Heim
Level 6
15 years ago
Hi hraju,

Sorry for not getting back to you sooner.  I'm not sure if you are still having this issue or not.

Using internal disks with a RAID controller can be problematic as some RAID controllers do not fully support all SCSI commands (like reservations) to the physical disks.  I'm guessing that your RAID controller is one that does not allow SCSI reservation commands and thus causing problems with importing the clustered disk group.

You can do basically two items to resolve this.

1.  Replace the RAID controller with a RAID controller or SCSI controller that does support SCSI-2 reservations.
2.  Contact Technical Support to see if a patch is available for the version of the product that you are running to by-pass the SCSI-2 reservation requirement.  I think there maybe a patch available but it might be limited as to which versions of the product it is for.


Thanks,
Wally