SUMMARY: Monitors and Mirroring...

From: Cenon B.C. Marana Jr. <bonn_at_durian.usc.edu.ph>
Date: Sat, 22 Jun 1996 01:44:18 +0800 (HKT)

Thanks to those who responded, namely:

Ohad Imer <ohad_at_comport1.comport.com>
Roman Gollent <roman_at_portal.stwing.upenn.edu>

My original questions are as follows:

> 1.) My monitor is gonna be repaired due to some problems. Is it possible
> to connect any SVGA monitor in an Alpha as long as it supports a 1024x768
> setup? Am using a Qvision card.

PC SVGA monitors works alright with the Alpha and vice versa. I have
tested it using the ADI Microscan 5AP and Microscan 7X+ series.

>2.) I have been trying to establish such setup.
>
> -------- --------
> | | | |
> | | | |
> | | | |
> -------- --------
> Alpha 1 Alpha 2
> (DEC 2000/300) (Alphaserver 400)
>
> Both hosts *are not* on the same place and *are connected via leased line*.
>
> Is there a way wherein data of Alpha 1 is somewhat "mirrored" to Alpha 2
> (when data is saved in Alpha 1, Alpha 2 data is also immediately updated)
> and when there is Alpha 1 failure (power, hard disk crash, etc.) Alpha 2
> takes over the setup and the change is somewhat transparent to the users?
>
> If it is possible, how?

Roman Gollent suggests:
======================

You will need to use the ASE package and you need to have 2 2100s with
KZPSAs and the proper componentry to do this. Interactive users will
lose functionality, I think but any transaction based services will
fall over gracefully.

Ohad Imer sez:
==============

   Use RTR (Reliable Transaction Routing) from DEC, or Tuxido- r u
   running Oracle?? With RTR you can guarenty the writes to both
   servers, and if one goes down, when it comes up it will
   sync it back up to date - you must write the application
   on the client to support this...



I also have heard that Wide Area clustering is a feature available on
OpenVMS clusters and is yet to be available on Digital UNIX. Can someone
from Digital perhaps confirm this one?


Bonn
:)
Received on Fri Jun 21 1996 - 20:08:09 NZST

This archive was generated by hypermail 2.4.0 : Wed Nov 08 2023 - 11:53:46 NZDT