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The Question is:
We are currently restructuring our current Vax system and need to know whether
the star coupler will be supported or still available in conjunction with the
HSZ80 or whether there is a more viable route to follow. I am replacing 5 Vaxs
with 4 Alphas and n
eed all systems to backup each other so i need the cluster hardware capability
and coupler to access my disk farm.
The Answer is :
For support options, requirements, and contractual information and
commitments, please contact your hardware service organization directly.
For pre-sales information and assistance, please contact your HP reseller
or your HP representative.
OpenVMS Engineering has no plans to remove the software that is required
for use with the CI -- your question, however, more directly involves
hardware and hardware support plans.
The Star Coupler itself is a passive device, and it is central to all
CI (Cluster Interconnect) configurations. CI bandwidth is typically
quoted at 70 megabits per second, dual-channel -- and this obviously
assumes you have CI controllers capable of dual-channel operations.
Fibre Channel is the expected storage for mid- and high-end clustering
configurations, and it specifically targets hardware of more recent
vintage than VAX systems. Fibre Channel storage controllers include
the HSG and HSV series controllers.
HSZ controllers are SCSI-based controllers and SCSI-based configurations
are common within low-end configurations and as auxilliary and direct or
local-access storage for mid- and upper-end systems. HSZ and SCSI
host-to-host interconnects may or may not be suited to your environment
and sufficient for your requirements -- without details on the storage
configuration and requirements, the OpenVMS Wizard cannot provide
particular specifics here.
While CI adapters are available, it may be more expedient and cheaper
to reconfigure over to and to use newer storage. Given you have CI and
VAX storage, you likely have older and slower and smaller storage --
again, it may well be easiest to simply serve the newer storage to the
VAX systems.
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