Re: Cluster with Alpha Workstations and Storage

Berg , Bjorn wrote:

>I want to build up a cluster from a Digital Personal Workstation 433 and
>500 and a small Digital StorageWorks. The two computers are connetced to
>the storage with an SCSI Y-cable.
>When I start one computer all went fine, and I could fire Linux up. When
>I try to start the second computer and it tries to connect to the
>storage (SCSI), it fails wit timeouts.
>
>I think the problem is the spin up of the disks. Is there a way to
>connect both computers without problems to the storage to use it as
>shared disk?

First , you need to make sure your scsi chain is OK , terminated
at both ends , observing max cable lenght.
You also need to make sure the scsi controllers on both systems do NOT
use the same scsi id. Sounds like this is your problem.

However , I'm not sure if you can share a disk this way. I think you can
only have access to a disk from 1 of the systems. Maybe you can mount
different
partitions from 1 disk on different hosts, but I'm not sure.
You certainly cannot share a filesystem this way , once you mount it from
one system
you don't want another system to access it as well.

These setups are typically used to do failover without rewiring.


Regards,
Jaap.




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