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10gRAC configurations on hp-ux
Starting with Oracle10g RAC, there are different configurations possible for HP-UX; essentially, the
customer needs to decide about which clustering solution will be deployed:
• Service Guard Extension for RAC + Oracle Clusterware
• Oracle Clusterware only
Based on the storage volume manager choice, there are three main alternatives:
• Oracle Automatic Storage Management (ASM)
• HP Cluster File system (CFS)
• RAW devices
Important Note: RAW devices do NOT provide a shared location for storing archive logs (archived
logs cannot be located on RAW). In this case, an extra approach has to be addressed to have all
archived logs accessible by all RAC instances. This is needed for backup and recovery purposes. Two
possible approaches are to:
• Define an archivelog destination local on each node (i.e. /arch1 on RAC1, /arch2 on RAC2) and
export it and cross mount it on every system. In case one of the nodes is down, the archivelog
directory is also not available.
• Define a shared archivelog destination for all RAC nodes on an NFS share and use a clustering
solution as HP Service Guard to guarantee its availability.
Figure 3. Oracle 10gRAC on hp-ux supported configurations
SGeRAC &
Oracle
Clusterware
10g RAC
HP-UX
Oracle
Clusterware
SLVM CVM ASM
RAW ASM RAW CFS
SGeRAC &
Oracle
Clusterware
10g RAC
HP-UX
Oracle
Clusterware
SLVM CVM ASM
RAW ASM RAW CFS
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