Friday, February 24, 2012

best way to tolerate an unreliable WAN connection?

I'm looking at a problem two sites have - the both run the same ERP system
on one server, and their WAN and internet connections are unreliable. What
is the preferred method to keep people from sitting on their thumbs when the
WAN is unavailable? What about if you want to be able to change data at both
locations while the connection is down?
Paul
I would cehck with the ERP vendor to see if they support
replication...either through SQL Server or through their own processes.
Many ERP/CRM vendors do have a "remote server" concept built-in for just
such a situation
Kevin Hill
President
3NF Consulting
www.3nf-inc.com/NewsGroups.htm
www.DallasDBAs.com/forum - new DB forum for Dallas/Ft. Worth area DBAs.
www.experts-exchange.com - experts compete for points to answer your
questions
"Paul" <noone@.executespammers.org> wrote in message
news:OhI52pujFHA.3288@.TK2MSFTNGP09.phx.gbl...
> I'm looking at a problem two sites have - the both run the same ERP system
> on one server, and their WAN and internet connections are unreliable. What
> is the preferred method to keep people from sitting on their thumbs when
> the
> WAN is unavailable? What about if you want to be able to change data at
> both
> locations while the connection is down?
> Paul
>
|||I messed with replication while back. It made making changes to the database
(new columns, SP's etc) a pain. I was hoping there might be an alternative,
maybe a third-party product.
The ERP system is a custom one. I'm trying to find a solution for a problem
my friend is having. Definitely anything he settles on to fix it would be of
interest to me, because I do custom ERP systems as well. We're fortunate
enough here though where WAN downtime hasn't been an issue thus far.
Paul
"Kevin3NF" <KHill@.NopeIDontNeedNoSPAM3NF-inc.com> wrote in message
news:u6VabyujFHA.2852@.TK2MSFTNGP15.phx.gbl...[vbcol=seagreen]
> I would cehck with the ERP vendor to see if they support
> replication...either through SQL Server or through their own processes.
> Many ERP/CRM vendors do have a "remote server" concept built-in for just
> such a situation
> --
> Kevin Hill
> President
> 3NF Consulting
> www.3nf-inc.com/NewsGroups.htm
> www.DallasDBAs.com/forum - new DB forum for Dallas/Ft. Worth area DBAs.
> www.experts-exchange.com - experts compete for points to answer your
> questions
>
> "Paul" <noone@.executespammers.org> wrote in message
> news:OhI52pujFHA.3288@.TK2MSFTNGP09.phx.gbl...
system[vbcol=seagreen]
What
>
|||If you want the system usable in two places that are not connected (during a
WAN outage), you are definitely looking into replication. Unless one of the
systems is going to be read-only. In that case you may be able to look into
log shipping, or 3rd party products like double-take from
www.nsisoftware.com (no affiliation)
Kevin Hill
President
3NF Consulting
www.3nf-inc.com/NewsGroups.htm
www.DallasDBAs.com/forum - new DB forum for Dallas/Ft. Worth area DBAs.
www.experts-exchange.com - experts compete for points to answer your
questions
"Paul" <noone@.executespammers.org> wrote in message
news:%231ALn%23ujFHA.3348@.tk2msftngp13.phx.gbl...
>I messed with replication while back. It made making changes to the
>database
> (new columns, SP's etc) a pain. I was hoping there might be an
> alternative,
> maybe a third-party product.
> The ERP system is a custom one. I'm trying to find a solution for a
> problem
> my friend is having. Definitely anything he settles on to fix it would be
> of
> interest to me, because I do custom ERP systems as well. We're fortunate
> enough here though where WAN downtime hasn't been an issue thus far.
> Paul
> "Kevin3NF" <KHill@.NopeIDontNeedNoSPAM3NF-inc.com> wrote in message
> news:u6VabyujFHA.2852@.TK2MSFTNGP15.phx.gbl...
> system
> What
>
|||Hi
Why not get the network sorted out. If the WAN goes down, hit ISDN/Dial Up
and keep the location working.
Implementing workarounds because the network guys can't keep their act
together is a difficult and costly thing.
Regards
Mike Epprecht, Microsoft SQL Server MVP
Zurich, Switzerland
IM: mike@.epprecht.net
MVP Program: http://www.microsoft.com/mvp
Blog: http://www.msmvps.com/epprecht/
"Paul" <noone@.executespammers.org> wrote in message
news:OhI52pujFHA.3288@.TK2MSFTNGP09.phx.gbl...
> I'm looking at a problem two sites have - the both run the same ERP system
> on one server, and their WAN and internet connections are unreliable. What
> is the preferred method to keep people from sitting on their thumbs when
> the
> WAN is unavailable? What about if you want to be able to change data at
> both
> locations while the connection is down?
> Paul
>
|||Yeah, that's the advice I gave.
According to the guy suffering from this, one site is out in the sticks and
has only Verizon for a provider and (apparently) one option for
connectivity. I told him to try to set up a failover connection over a
regular cable broadband connection. Never seen it done, but I don't see why
it couldn't work. People may turn their noses up at residential connections
but it's better than nothing, and some of them are damn fast. I've been
looking at Verizon's FIOS and salivating. 30Mb/s!
Paul
"Mike Epprecht (SQL MVP)" <mike@.epprecht.net> wrote in message
news:u8tKsY3jFHA.3144@.TK2MSFTNGP12.phx.gbl...[vbcol=seagreen]
> Hi
> Why not get the network sorted out. If the WAN goes down, hit ISDN/Dial Up
> and keep the location working.
> Implementing workarounds because the network guys can't keep their act
> together is a difficult and costly thing.
> Regards
> --
> Mike Epprecht, Microsoft SQL Server MVP
> Zurich, Switzerland
> IM: mike@.epprecht.net
> MVP Program: http://www.microsoft.com/mvp
> Blog: http://www.msmvps.com/epprecht/
> "Paul" <noone@.executespammers.org> wrote in message
> news:OhI52pujFHA.3288@.TK2MSFTNGP09.phx.gbl...
system[vbcol=seagreen]
What
>

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