CCR just plain rocks. The ability to apply updates or serice packs with minimal downtime for cached clients makes it all worth while.
________________________________ From: Neil Hobson [EMAIL PROTECTED] Sent: Thursday, January 24, 2008 3:38 AM To: MS-Exchange Admin Issues Subject: RE: Anyone using CCR in production? I’ve got customers using CCR with DAS just fine. As Michael said, if you plan the spindle count correctly, it’s fine. The other interesting argument I’m seeing in design workshops now is when the customer wants CCR within a data center stored on a single SAN in that data center, with SCR to another site. Do you go with CCR on a SAN? (duplicated storage, etc). Do you put the active storage on SAN and the passive on DAS? Are the features of CCR enough to warrant both nodes on the SAN? (i.e. transport dumpster, passive node backups, etc, etc). Do you go for SCC instead? Loads of interesting questions to consider these days. From: Robinson, Chuck [mailto:[EMAIL PROTECTED] Sent: 23 January 2008 13:37 To: MS-Exchange Admin Issues Subject: RE: Anyone using CCR in production? Neil, I guess that eliminates Dell hardware. :) Seriously though, according to a recent MS webcast: How Microsoft IT Implemented New Storage Designs for Exchange Server 2007, MS claims they are running 99% of the environment using CCR and DAS. Anyone see that? I for one would like to hear some thoughts on that as well as CCR backup/recovery good, bad and the ugly. Chuck From: Neil Hobson [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 23, 2008 4:23 AM To: MS-Exchange Admin Issues Subject: RE: Anyone using CCR in production? I saw one of our customers last year who is running Exchange 2000 and wants to go to Exchange 2007. No clustering is used in Exchange 2000 and no clustering is required for Exchange 2007 because, as far as I can remember, they said they had only had 1 unscheduled outage in the last 5 years. It’s amazing what can be done with well-redundant single servers. :) From: Michael B. Smith [mailto:[EMAIL PROTECTED] Sent: 22 January 2008 18:33 To: MS-Exchange Admin Issues Subject: RE: Anyone using CCR in production? I would say that clustering is falling out of favor, not CCR specifically. Clustering adds a lot of cost and a fair bit of maintenance complexity to get a very small up-time improvement. And if your operations folks aren’t good – it can lead to worse up-time instead of improved up-time. I’m of the opinion (and it is just that – my opinion) that if you buy good hardware to start with (redundant fans, redundant power supplies, name-brand memory, etc.), that clustering isn’t worth the cost. I haven’t played with Windows 2008 dispersed clusters yet. They may make it easier and more worthwhile. I dunno yet. Regards, Michael B. Smith MCSE/Exchange MVP http://TheEssentialExchange.com From: Pete Howard [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 22, 2008 10:05 AM To: MS-Exchange Admin Issues Subject: Re: Anyone using CCR in production? Ive had a CCR implementation with 10 storage groups and about 200gb of data running on RTM code since last August with no issues. Works great, smooth and reliable failover ..so far. Why is CCR falling out of favor ? I can see where it adds some complexity in setup but the MNS style clustering makes that a lot easier. It does make patching more difficult .. I still need to do SP1 when I have a spare minute. Pete Howard | Systems Engineer MCSE 3.51-2003 | ESX VCP • EMail: [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]> ----- Original Message ---- From: Michael B. Smith <[EMAIL PROTECTED]> To: MS-Exchange Admin Issues <exchangelist@lyris.sunbelt-software.com> Sent: Monday, January 21, 2008 11:43:00 AM Subject: RE: Anyone using CCR in production? The first two lines are about a particular client using CCR, sorry. The last line is a generic statement. I wasn’t clear… Regards, Michael B. Smith MCSE/Exchange MVP http://TheEssentialExchange.com<http://theessentialexchange.com/> From: Barsodi.John [mailto:[EMAIL PROTECTED] Sent: Monday, January 21, 2008 11:35 AM To: MS-Exchange Admin Issues Subject: RE: Anyone using CCR in production? So you guys aren’t using CCR or SCC Michael? From: Michael B. Smith [mailto:[EMAIL PROTECTED] Sent: Monday, January 21, 2008 8:30 AM To: MS-Exchange Admin Issues Subject: RE: Anyone using CCR in production? 30K+ users, 2 GB hard limits, individual databases limited to 100 GB. Geodispersion is coming, using Windows Server 2008. Backup is LCR to cheap disk. I’m seeing more folks moving away from clustering with LCR and SCR. Good riddance, in my opinion. Regards, Michael B. Smith MCSE/Exchange MVP http://TheEssentialExchange.com<http://theessentialexchange.com/> From: Alex Fontana [mailto:[EMAIL PROTECTED] Sent: Monday, January 21, 2008 1:46 AM To: MS-Exchange Admin Issues Subject: Anyone using CCR in production? Curious to know what folks have seen in the field when using CCR. How many users, how large are your databases, any issues you've encountered. Any geo-dispersed clusters, special quorum configs, and how are you backing all of it up? thanks! -alex ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
