Re: Optical storage solution

["Patrick Townsend" <patownsend@xxxxxxxxxxxxxx>]

We recently looked at 3995 as an archival device for one of our
applications. We came to the conclusion that the new LTO tape drives offer a
lot of advantages. Speed and cost are among them.

Patrick
---
IBM AS/400 communications, FTP automation, and eCommerce
software and consulting services.

http://www.patownsend.com

----- Original Message -----
From: "Carley, Neil" <carleyn1@Midas-Kapiti.com>
To: <MIDRANGE-L@midrange.com>
Sent: Monday, July 09, 2001 6:06 AM
Subject: Optical storage solution


> Hi everyone,
>
> I am looking into possibly adding a #3995 optical storage drive to our
> system  to, in the short term help our current DASD(or lack of it!)
problem.
> .I have read through the IBM documentation etc. but would appreciate if
> someone who has experience of using these drives could explain how exactly
> the data end of things work ?
> The below scenario kind of outlines my questions/confusions.
>
>
> Say,
> I have 5000 libs on my system 1000 of which are rarely accessed (none the
> less critical), how exactly do I archive these off DASD onto the optical
> solution (savlib(libxxx) dev(opt02))? and what way do they appear when
they
> are there ?
>
> If I need to access/use one of the above libs or data contained in
> it, how do I do it ?
> do I view the data from the optical, and if I need to change/update it
then
> do I restore it back to ASP disk, make my change and then save it back to
> the
> optical ?
>
> Should I change/update the above lib or data in it can I write it
> back to where it was on the optical in the updated form ?
>
> What if multiple users require data residing on the optical library at the
> same time, does it work like a tape drive would, i.e. 1 drive 1 user, or
> will it
> buffer requests for the use of the internal drive as they come into the
> system and process them in turn ? Also if it is a model with more than 1
> internal drive can more than 1 user use the optical library at the same
> time
> assuming they are not requiring data from the same optical cartridge ?
>
> Hope these questions don't seem too trivial but I want to be sure of how
it
> all works.
> Needless to say if you think of any other significant running conditions
> etc. for the solution please advise.
>
> Regards & thanks
>
>  Neil
>
>
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