RE: Simulator - Disk Array

From: Buerger, Andreas (andreas.buerger@wincor-nixdorf.com)
Date: Fri Jan 18 2008 - 03:58:25 EST

  • Next message: Johnson, James A [HDS]: "NetApp Home Lab"

    Nick,

    Don't get me wrong. This was just an idea for an alternative, you
    described below.
    These ideas with netapp sims should be used for field stuff or things
    like that.
    It is not planed for whole branches, only for several people, that's why
    a real filer doesn't make sense and would be completely oversized.
    So I'm looking for a solution to optimize these things and netapp
    functions may improve the whole process.
    I want to give it a try, if it's really competitive with standard unix
    methods, that are already well proven.

    Of course, support questions and license restrictions are other points,
    we have to deal with...

    -----Original Message-----
    From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com]
    On Behalf Of Nicholas Bernstein
    Sent: Thursday, January 17, 2008 8:02 PM
    To: Toasters
    Subject: Re: Simulator - Disk Array

    So this data is obviously important to you, and something that you want
    to
    protect, this is why you're doing offsite data replication. I would
    think
    you would be much better off buying a filer, but since you're using the
    simulator, I'm assuming that's a no-go. I'm assuming further, since you
    have
    the simulator, you have access to a unix/linux box to run it on. Here's
    what
    I would propose as an alternative:

    Mount the volumes you want to sync off site on a unix box.
    Open port 22 on your firewall to the remote site you want to sync your
    data
    to.
    Follow the guide below, but add the option "-e 'ssh'" to the rsync
    commands,
    and set the source to be "ip.of.unix.source:/path/to/mounted/volumes"
    and
    the destination the location on the remote destination's unix machine.

    This is a fairly straight forward process and uses standard methods
    common
    for doing backups in the unix world. It will preserve your premissions
    and
    allow you to recover from a specific point in time, just like snapshots
    do.
    It's not *quite* as nice, but I would imagine it would be preferable to
    relying on a sim. Obviously, it does require a certain comfort level
    with
    unix, so your mileage may vary.

    -Nick

    On 1/17/08 9:26 AM, "Fox, Adam" <Adam.Fox@netapp.com> wrote:

    > The biggest hurdle you'll have is no support for your simulators.
    > So depending on how mission critical this replication is, you'll need
    to
    > decide if it's worth it for the price.
    >
    > I'm not saying it won't work, I believe it will. But if you have any
    > problems down the line, tech support will be limited as to what they
    can do
    > since the simulators don't have support contracts.
    >
    > -- Adam Fox
    > adamfox@netapp.com
    >
    >
    > -----Original Message-----
    > From: Buerger, Andreas [mailto:andreas.buerger@wincor-nixdorf.com]
    > Sent: Thursday, January 17, 2008 12:12 PM
    > To: Fox, Adam; Johnson, James A [HDS]; Bill Holland
    > Cc: toasters@mathworks.com
    > Subject: RE: Simulator - Disk Array
    >
    > Hi,
    >
    > One additional question regarding this topic.
    > We're planing the usage of netapp sims, for somekind of small data
    replication
    > from our central datacenter to home offices.
    > Today we're syncing the data with unix tools, but we think about
    implementing
    > a netapp sim, because of some very useful netapp functios.
    > The amount will be about 1-2gb, which has to be mirrored each day to
    the home
    > offices.
    > I think we can optimize speed and and we would be able to throttle
    bandwith
    > with the usage of the simulators snapmirror.
    > The solution will be a blackbox for the users, just only for automatic
    syncing
    > the data from our headquarter to their private office.
    > For this usage, netapp functions provide very powerful and useful
    methods,
    > thats why I'm thinking about this...
    >
    > What do you think about these ideas? Are there any restrictions, which
    do not
    > allow the commercial use of netapp sims?
    > Or do you think it's just an unrealistic idea, to implement such a
    solution?
    >
    > Regards
    > Andreas
    >
    >
    > ________________________________
    >
    > From: owner-toasters@mathworks.com
    [mailto:owner-toasters@mathworks.com]
    > On Behalf Of Fox, Adam
    > Sent: Thursday, January 17, 2008 5:19 PM
    > To: Johnson, James A [HDS]; Bill Holland
    > Cc: toasters@mathworks.com
    > Subject: RE: Simulator - Disk Array
    >
    >
    > No. The simulator liceses only work on simulators, not real filers.
    > Licenses are priced by platform, but older (i.e. EOL platforms) may
    not have
    > prices.
    >
    > There's been talk about "home use" licensing, but I'm not aware if it
    was ever
    > implemented.
    >
    > -- Adam Fox
    > adamfox@netapp.com
    >
    >
    >
    > ________________________________
    >
    > From: Johnson, James A [HDS] [mailto:James.Johnson8@hdsupply.com]
    > Sent: Thursday, January 17, 2008 10:36 AM
    > To: Johnson, James A [HDS]; Bill Holland
    > Cc: toasters@mathworks.com
    > Subject: RE: Simulator - Disk Array
    >
    >
    >
    > I know this probably doesn't work. But if I purchase a old filer,
    would
    > the simulator licenses work on that? How much does the licenses cost
    > anyway?
    >
    >
    >
    > James
    >
    >
    >
    > ________________________________
    >
    > From: owner-toasters@mathworks.com
    [mailto:owner-toasters@mathworks.com]
    > On Behalf Of Johnson, James A [HDS]
    > Sent: Friday, January 11, 2008 8:13 AM
    > To: Bill Holland
    > Cc: toasters@mathworks.com
    > Subject: RE: Simulator - Disk Array
    >
    >
    >
    > Thanks, I thought that would be the case.
    >
    >
    >
    > ________________________________
    >
    > From: Bill Holland [mailto:hollandwl@gmail.com]
    > Sent: Friday, January 11, 2008 8:12 AM
    > To: Johnson, James A [HDS]
    > Cc: toasters@mathworks.com
    > Subject: Re: Simulator - Disk Array
    >
    >
    >
    > No. The simulator is limited to 28 1GB virtual disks.
    >
    > On 1/11/08, Johnson, James A [HDS] <James.Johnson8@hdsupply.com>
    wrote:
    >
    > Can a simulator be used for real disk? E.g. I build a linux box and
    > attach 36 external disks to it, would the simulator be able to see
    that
    > storage? If so, how? Does anyone have instruction on how to do this?
    >
    >
    >
    >
    >
    > Thanks,
    >
    >
    >
    > James
    >
    >
    >

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