| Title: | + OpenVMS Clusters - The best clusters in the world! + |
| Notice: | This conference is COMPANY CONFIDENTIAL. See #1.3 |
| Moderator: | PROXY::MOORE |
| Created: | Fri Aug 26 1988 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 5320 |
| Total number of notes: | 23384 |
a (possibly) foolish question ...
consider 3 systems - A8200, each with 2 DEFPA cards, plugged into
DECconcentrator 900s. FDDI is the cluster transport, all connected
storage is MTI. according to the way things are cabled, there should
be two separate rings; i don't know if one acts as a backup or as an
"alternative" path.
why, then, doesn't VMS show any path other than PEA0 to these disks?
+b (whose VMScluster skills are rusty at best)
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 5295.1 | BSS::JILSON | WFH in the Chemung River Valley | Thu Apr 24 1997 09:51 | 4 | |
You may be able to get more information from the following STARS article [OpenVMS] How to Determine the Preferred Channel for Cluster Communication Jilly | |||||
| 5295.2 | ALL network devices combine into 1 PEA0 device. | CSC32::B_HIBBERT | When in doubt, PANIC | Thu Apr 24 1997 11:32 | 9 |
The PEDRIVER controls ALL the network adapters that have SCS protocal
enabled. ALL the devices are combined into a single PEA0 logical
device. The PEDRIVER then picks the best path to the node that you are
trying to communicate with base on the last measured latency. If your
2 rings are really separate, they will still appear as a single PEA0
device, but the driver should pick the correct path to the remote node.
Brian Hibbert
| |||||
| 5295.3 | cheers | DYPSS1::SCHAFER | Kalh�un! | Thu Apr 24 1997 13:30 | 1 |
thanks for the info/pointers, guys. | |||||