topic Re: regarding scsi cable in Operating System - OpenVMS

regarding scsi cable

Mon, 13 Aug 2007 03:11:22 GMT

we have two DS-20 Alpha servers with 2 CPU, 4GB RAM & 500 MHz Processor and we are trying to establish a SCSI cable VMS cluster setup among these two servers.

We have configured our servers as follows:

We are getting problem in recognizing the storage box. When we connect the Storage box with the DS-20 server using 68-pin SCSI cable, DS-20 is not able to recognize it moreover, after connecting DS-20 to storage box it is not even showing its internal disks. The same problem occurs when we connect two DS-20 Alpha server using 68-pin SCSI cable without using the Storage box both the server are not showing their internal disks.

Can you please help us how can we make DS-20 server to recognize storage box or how one DS-20 Server can show other DS-20 disks also after connecting each other using SCSI Cable. Is there any system changes or environmental variable to be set for the same.

Re: regarding scsi cable

Anton van Ruitenbeek — Mon, 20 Aug 2007 18:06:41 GMT

What sort of controllers are you using ? This is only supported on Diff controllers.
What kind of storagebox/controller are you using ?
It's more convenient to use the following configuration:

alpha1 -> port 1 storage
alpha2 -> port 2 storage

And the best thing is to use Y-cables on the Alpha's. This is actualy the best when you want to mantanance on a Alpha without shutting down the other node.

AvR

Re: regarding scsi cable

Hein van den Heuvel — Mon, 20 Aug 2007 18:23:34 GMT

Hello Ajaydec. There are a lot of words missing from your description suggesting that you may not be fully aware of all the issues involved. Missing words: terminators, differential, tri-link, Y-cable, FWD, kzpsa/kzpba, version.
Extraneaous words: internal storage.

Please check out the OpenVMS Clsuter Documentation, and activate proper support as requied.

Alos check out suggested configurationas per Golden Eggs:
http://www.openvms.org/pages.php?page=Alpha_GE_Archives
For example:
http://goldeneggs.spyderbyte.com/geggs/GTAVDS20EGPF.pdf

Good Reading!

Hein.

Re: regarding scsi cable

Hoff — Mon, 20 Aug 2007 20:21:01 GMT

The base question from this thread is a duplicate of the following thread:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1152646

Re: regarding scsi cable

Wed, 06 Feb 2008 06:11:24 GMT

regards,
ajaydec