Re: [foxboro] Licensing of mirroring software

Sorry guys a quick look at the IQS   shows

J0175GU   Disk Mirroring software 

As standard the medusa software supplied is a cut down version that only
supports concatenation.

System monitor does not monitor medusa messages.

as a quick check cd /usr/local/medusa

dft

this will produce a uaeage message

it is different if the mirroring software is configured (licensed or not) or
not.

Regds

Graham.



-----Original Message-----
From: wcricker [mailto:wcricker@xxxxxxxxxxxxx]
Sent: 14 November 2002 16:19
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Licensing of mirroing software



Stan, Here's my take.

Disk mirroring software is included on every 51 series box,
No separate license is sold by Invensys for this stuff,
The Medusa stuff runs on every 51 box, regardless of SysDef, etc.
SysDef includes mirroring configuration, appaprently to inform
  System Monitor to process messages.

Given this, it is my understanding that mirroring is included
  in the 51 series station license. So to impliment mirroring,
  you add the hardware, set the param's in SysDef, do a 'change'
  type of Software Install, and have at it.

When you do this thing, remember disk sizes should be the same
  type (according to the disk's soft label), and that you should have 
  the second scsi interface, the one with the ethernet on the same
  card.  Things can get dicey if the (single) hard drive you have now
  is not the same as each of the hard drives in the mirrored pair
  are going to be.  In this case you need to get fancy about moving
  the old image to the new drives, or you need to do a Day 0 reload.

Also, the parts are available, new, on the open market.

Good luck.

William C. Ricker
FeedForward, Inc.
Marietta, GA, USA
wcricker@xxxxxxxxxxxxxxx
770-426-4422 


 
 
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