SunCluster 3.0 specific questions

Question

Any questions about Sun Cluster 3.0 solution:
Storage:
Q1: D1000 array has 2 independent differential UltraSCSI channels, but how
many interface boards ? (if the 2 channels are handled by a single adapter,
the D1000 is not a real HA architecture)
Q2: Is the new D2 array supported in a Sun Cluster 3.0 environment ?
Q3: If I build a 2-node cluster with a D1000 array (the 2 channels
daisy-chained together in a single SCSI bus), can the D1000 be easely
substituted with a D2 in the future (changing of course the SCSI board on
the nodes) ?
Network:
Q1: In Sun Cluster 3.0, a NAFO group enables resilience from network adapter
failure. Does it increase the network bandwidth too (spreading the traffic
across all the interfaces of the group, like multipathing does) ?
Cluster aware applications:
Q1: Does anyboby of u confirm that RSMAPIs are available only w/ a SCI
interconnect ?
Q2: Is Netra 20 h/w compatible with SCI (or PCI-SCI) interconnect in a Sun
Cluster 3.0 environment ?
Q3: Using RSMAPIs "An application on node A can export a segment of memory,
which makes it available to applications on node B"; is this segment of
memory available to node B applications after a node A failure (at power off
too) ?
Thank you
bob

Answer 1

Any questions about Sun Cluster 3.0 solution:
Storage:
Q1: D1000 array has 2 independent differential
UltraSCSI channels, but how
many interface boards ? (if the 2 channels are handled
by a single adapter,
the D1000 is not a real HA architecture)In most Sun Cluster implementations which are
optimized for availability, there will be two nodes
connected to one or more D1000s via HBAs.
The choice of splitting the D1000 into two halves
versus using two or more D1000s is up to the
implementor. It is very, very rare and generally
not recommended to have only one shared SCSI
bus.
Q2: Is the new D2 array supported in a Sun Cluster 3.0
environment ?Not yet. Qualifications are updated every two weeks
so you will want to keep in touch with your Sun
representative to verify the qualification status.
Q3: If I build a 2-node cluster with a D1000 array
(the 2 channels
daisy-chained together in a single SCSI bus), can the
D1000 be easely
substituted with a D2 in the future (changing of
course the SCSI board on
the nodes) ?This is a supported configuration assuming there are
two D1000s which are not split into halves and the
data is mirrored between the separate D1000s.
Changing to a D2 in the future will involve upgrading
to the LVD SCSI HBAs and any other associated
migration work (eg. relocating a quorum device
and migrating data)
Network:
Q1: In Sun Cluster 3.0, a NAFO group enables
resilience from network adapter
failure. Does it increase the network bandwidth too
(spreading the traffic
across all the interfaces of the group, like
multipathing does) ?No.
Cluster aware applications:
Q1: Does anyboby of u confirm that RSMAPIs are
available only w/ a SCI
interconnect ?This is correct as of this time.
Q2: Is Netra 20 h/w compatible with SCI (or PCI-SCI)
interconnect in a Sun
Cluster 3.0 environment ?Again, you will need to verify the qualifications with
your Sun representative.
Q3: Using RSMAPIs "An application on node A can export
a segment of memory,
which makes it available to applications on node B";
is this segment of
memory available to node B applications after a node A
failure (at power off
too) ?Yes. The memory is replicated between the two
interfaces. There should always be a copy of the current
remote host memory physically located in the local host.
-- richard