Re: 24/7 questions:

[Bob Larkin <blarkin@xxxxxx>]

Trw www.emc.com. For more in depth info, you are stuck with dealing with a
salesman.
Bob

Matt Patee wrote:

> Bob,
>
> I may be interested in the EMC solution you have. Do you have a website I
> could check out? Thanks for the info.
>
> -Matt
>
> Bob Larkin <blarkin@wt.net>@midrange.com on 06/09/2000 05:17:42 PM
>
> Please respond to MIDRANGE-L@midrange.com
>
> Sent by:  owner-midrange-l@midrange.com
>
> To:   MIDRANGE-L@midrange.com
> cc:
> Subject:  Re: 24/7 questions:
>
> Larry,
> Our shop just inherited four AS/400 system with NO DASD. All data storage
> is
> handled by an EMC Symmetrix <sp?> storage system. As you say, it is SCSI
> attached, not LAN, but I understand that other systems are LAN attached to
> the
> same Symmetrix box.
>
> I have investigated IBM's Shark SAN, and it as some interesting features,
> but it
> needs more work for the AS/400 world. If they would support the AS/400's
> optical
> link, it would be a good start, but a Giga ethernet conection might work.
>
> One intersting point on the Symmetix. there is no load source on the
> AS/40s. The
> load source is a virtual drive in the Symmetrix. You can electronically
> switch
> the virtual DASD from one AS/400 to another, then IPL and the second system
> will
> be using the same DASD as the first was. They say this works even though
> the two
> AS/400s are different configurations! That really blows me away. Or
> confuses me.
> What happens to the mismatches in the configurations? I don't have a clue
> how
> that is handled. We are just beginning to work on these inherited systems,
> so we
> don't have all of the information yet.
> Bob
>
> Larry Bolhuis wrote:
>
> > Matt,
> >
> >   If you are truly 24/7 you WILL indeed need to do something to
> > accomplish backups.  Most likely a Mirroring product such as
> > DataMirror's Transformation Server(*) to another system (or LPAR
> > partition) that you can pause while backing up the second machine.  Even
> > with this solution though you will need to identify a time WHEN to pause
> > the mirroring or you will have a clean backup (from the OS/400
> > perspective) but not neccesarily from the applications perspective (ie
> > transactions are only partially applied).
> >
> >   Network Attached storage is not really a player in the AS/400 market
> > yet. Currently the only way to attach non 'native' AS/400 storage is
> > with 6501 SCSI cards and that really buys you nothing.  Due to Single
> > Level Storage architechure it's not likely from my perspective that you
> > will see network attached storage any time soon.
> >
> >   HTH - Larry
> >
> > (*) We represent DataMirror
> >
> > Matt Patee wrote:
> > >
> > > Hello all. I would like to revisit a topic that has come up more than
> once.
> > > My shop will become a 24/7 shop within the next year, and I would
> > > appreciate any and all advice on the best ways to accomplish this.
> > > Mirroring servers, high availability software, shared journaling, etc.
> I
> > > would like to know who has 24/7 shop and how they are managing. What
> are
> > > you using for backup, and disaster recovery solutions?
> > >
> > > Separately I have a questions regarding Network attached storage. Is
> anyone
> > > using this in conjunction with their 400? Does anyone know if it works?
> Is
> > > there any documentation I could look into?
> > >
> > > Any and all help will be appreciated.
> > >
> > > -Matt
> >
> > --
> > Larry Bolhuis         |  It's 10PM.
> > Arbor Solutions, Inc  |  Have you rebooted your NT Server yet today?
> > (616) 451-2500        |
> > (616) 451-2571 -fax   |
> > lbolhuis@arbsol.com   |
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