hey how about that Legato (former Vinca) CoStandby? has anyone ever had any good experience with it? They have been around for a long time too.
-----Original Message----- From: Chris Scharff [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 12, 2002 2:26 PM To: Exchange Discussions Subject: RE: Exchange 2000 HA Well, obviously this is an area I've looked into quite a bit. <g> My major issue with replication is bandwidth, in a large distributed Exchange organizations there are in some cases sites which don't have (and can't obtain) sufficient bandwidth for complete replication. A solution which used snapshot (Exchange aware) backups and replicated diffs, would probably be ideal in terms of bandwidth optimization... Recovery from failover would be my biggest concern. How do the changes get replicated back quickly in order to bring the production server back online and how automated will the process be. Another issue which weighs on my mind somewhat is testing... How easy is it to test failover, and how much expertise is required to make sure it goes smoothly when the %^&# hits the fan. There are also some issues around message routing in the event of a partial failover: updating of DNS and IP routing, client configuration and the like. Short answer: I don't think any full WAN replication solutions are as straightforward or easy to implement as the vendors might like you to think. Not that they aren't an appropriate solution for some companies, but sunglasses are required during evaluation in order to not be blinded by the sunshine and light the vendors espouse. And like Missy, I like the Marathon Technologies solutions if for no reason other than they've been at this game a lot longer than the other players and have earned a good reputation during that time. -- Chris Scharff, MVP MCSE EMS Sales Engineer MessageOne 512.652.4500 x-244 > -----Original Message----- > From: Karen McLaughlin [mailto:[EMAIL PROTECTED]] > Sent: Thursday, September 12, 2002 12:07 PM > To: Exchange Discussions > Subject: Re: Exchange 2000 HA > > > I agree based on theory, but have not implemented it myself. > The product being considered is Mirror View to go with an EMC > SAN/ Chris, the reason DoubleTake is not an option is based > on the understanding that the replication is a "best effort" > process and is not guaranteed. According to EMC, Mirror View > is confirmed replication between sites. > > The bottom line, though, is that if this doesn't work, then > it's not worth the huge chunk of money they are asking for it. > > Cheers, > Karen > > On Thu, 12 Sep 2002, Missy Koslosky wrote: > > > I mean that you need to take into account the way Exchange > works with > > its transaction logs - how they're cached and then written. Doing > > this simultaneously with geographically dispersed systems is > > unreliable and is simply, IMO, asking for at trouble. There is no > > product out there today that can make this work consistently - they > > may work for a while, but I would not want to tell anyone that this > > type of solution (geo-clustering) is a great way to go. > > > > Make sense? > > > > Missy > > ----- Original Message ----- > > From: "Karen McLaughlin" <[EMAIL PROTECTED]> > > To: "Exchange Discussions" <[EMAIL PROTECTED]> > > Sent: Thursday, September 12, 2002 12:28 PM > > Subject: Re: Exchange 2000 HA > > > > > > Missy, when you say "doesn't do it nicely," does that imply that it > > does not work well/reliably as well as not being worth the cost? > > > > - Karen > > > > > > On Thu, 12 Sep 2002, Missy Koslosky wrote: > > > > > There aren't any real best practices for this, as > Exchange doesn't > > > do it nicely. There are other possible solutions - Scharff? > > > > > > Missy > > > ----- Original Message ----- > > > From: "Karen McLaughlin" <[EMAIL PROTECTED]> > > > To: "Exchange Discussions" <[EMAIL PROTECTED]> > > > Sent: Thursday, September 12, 2002 12:01 PM > > > Subject: Exchange 2000 HA > > > > > > > > > I'm looking for best practices and white papers that discuss > > > replicating Exchange 2000 clusters to a remote site. > Management is > > > concerned over how to do backups and what kind of software is out > > > there that can provide this functionality. DoubleTake is > not good > > > enough, and that's the only product I am familiar with. > > > > > > Any pointers appreciated. > > > > > > TIA, > > > Karen > > > > > > > > > _________________________________________________________________ > > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > > Archives: http://www.swynk.com/sitesearch/search.asp > > > To unsubscribe: mailto:[EMAIL PROTECTED] > > > Exchange List admin: [EMAIL PROTECTED] > > > > > > > > > > > > _________________________________________________________________ > > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > > Archives: http://www.swynk.com/sitesearch/search.asp > > > To unsubscribe: mailto:[EMAIL PROTECTED] > > > Exchange List admin: [EMAIL PROTECTED] > > > > > > > > > _________________________________________________________________ > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > Archives: http://www.swynk.com/sitesearch/search.asp > > To unsubscribe: mailto:[EMAIL PROTECTED] > > Exchange List admin: [EMAIL PROTECTED] > > > > > > > > _________________________________________________________________ > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > Archives: http://www.swynk.com/sitesearch/search.asp > > To unsubscribe: mailto:[EMAIL PROTECTED] > > Exchange List admin: [EMAIL PROTECTED] > > > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
