Re: High Availability -- MIDRANGE-L

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Hi there Ron,

I agree with Steven regarding support. I worked for a customer over here that 
ran
MIMIX. This was back in '95,'96, still on the CISC boxes and when MIMIX still 
had some
issues. Since then, the product has changed hands locally and will not claim to 
have
any in-depth knowledge on the product any more.I do know that they have 
progressed
quite a bit since then, but there are still certain issues that I have with high
availability system. These will improve (have improved), depending on the 
customer's
installation and implementation of the product. Things like network bandwidth, 
etc.,
come into effect.

When it comes to the normal applications, consisting of files or objects that 
are
journalized at record level, then this is fine. As soon as large objects, such 
as
images or objects within the IFS,  are also included the system may take a dive 
in
terms of certain performance aspects. The reason for this is that the object 
does not
change at its simplest journal-able form (record level), but rather as a whole. 
Set up
a folder and create some documents in it. Or scan some images in via AWD. Edit 
anyone
of those objects and change even just a period (full stop) in it. The whole 
object has
then changed. Depending on the volumes, this may adversely affect your 
performance, as
all the changed objects are then replicated to the target machine. I  would 
contact
Lakeview at www.lakeviewtech.com and inquire from them. The same goes for 
VISION. A
local company (www.idion.com) acquired Vision Solutions in March 2000.

I must state that I would not take their (local customers) comments for 
granted. The
reason for this is that any product (as per Steven's comment) is only as good 
as the
after-sales service and support that you get from them, i.e. in your country!  
This
comment must please not be misunderstood, as I know that local support for this
product (MIMIX) is healthy! Failing that, then from the developers. or the 'sun
source' of the product.

Just as an aside: I notice (as many before me have, and many after me will) 
that IBM
tends to identify certain functionality from other companies and then build it 
into
the OS. MIMIX works on a remote journaling function. Albeit that this is menu 
driven
in MIMIX, you can do the same with remote journaling within the later versions 
of the
operating system. It once again makes companies like Lakeview to be perceived 
as if
they are only putting lipstick (rouge?) on the pig, whereas they are the ones 
that did
the homework, donkey work and the slogging to bring this to market!  Once again,
contact them and get information straight from them!!!

Hope this helps.

Jan.

steven.donnellan@simonjersey.com wrote:

>
> MiMiX, once they've configured it, is pretty much 'fire and forget'.  They
> do, however, offer excellent support if you do have cause to need it.
>
> Steven Donnellan
> AS/400 Systems Manager
> IBM Certified Specialist - AS/400 Professional Operator
> Simon Jersey Ltd
>
> http://www.simonjersey.com
>
> <raspo@slomins.com>
> Sent by: midrange-l-admin@MIDRANGE.COM
> 21/11/01 17:16
> Please respond to midrange-l
>
>         To:     <midrange-l@midrange.com>
>         cc:
>         Subject:        High Availability
>
> This is a multi-part message in MIME format.
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> I am interested in hearing users experiences and opinions on the 3 major
> High Availability Applications : MIMIX, Vision and Data Mirror. Any input
> ?
>
> Thanks and have a Happy Thanksgiving ,
>
> Ron Sposito
> Slomin's Inc
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>
> _______________________________________________
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