All Exchange services (except SRS and Event) are cluster resources that fail over when the disk (or server) fails. Additionally, there is an Exchange virtual server resource (what your clients connect to) that fails over. Geocluster creates a Replicated Disk Resource that replicates the data in real time. We did a test failover during the workday and no one reported any problems. It took about 60-90 seconds for the failover to complete. Outlook didn't even burp. It's very important to have a fast and reliable network connection on the private cluster interface since the replication traffic uses this (our is switched 100BaseT).
Tom Bloom Systems Analyst Department of Student Life Texas A&M University (979) 862-7990 [EMAIL PROTECTED] -----Original Message----- From: Andrey Fyodorov [mailto:[EMAIL PROTECTED]] Sent: Wednesday, May 15, 2002 8:45 AM To: Exchange Discussions Subject: RE: Exchange Redundancy What happens if server A's storage blows? Do the users on server A still get blown out of the water? Or does Geocluster mirror storage between server A and server B? -----Original Message----- From: Bloom, Tom [mailto:[EMAIL PROTECTED]] Sent: Tuesday, May 14, 2002 5:52 PM To: Exchange Discussions Subject: RE: Exchange Redundancy We are using an Exchange 2000 active/passive cluster with NSI's Geocluster product. Geocluster extends MS Cluster Services by allowing each server in the cluster to have their own disk storage (no shared disk as in traditional clustering). Geocluster has worked well with Exchange 2000 and we've had few problems. Tom Bloom Texas A&M University -----Original Message----- From: Andrey Fyodorov [mailto:[EMAIL PROTECTED]] Sent: Friday, May 10, 2002 8:43 AM To: Exchange Discussions Subject: RE: Exchange Redundancy Did Double-take mirror the entire Information Store in real time? I know Octopus would choke if someone tried to mirror a very large file. -----Original Message----- From: Gordon Olson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, May 08, 2002 5:22 PM To: Exchange Discussions Subject: RE: Exchange Redundancy I have used Doubletake and Co-standby in the Exchange 5.5 and co-standby is the Winner in my book. If I ever get the ex2k up and mailboxes moved over (almost done) I will use co-standby for that as well. -----Original Message----- From: David Weinstein [mailto:[EMAIL PROTECTED]] Sent: Wednesday, May 08, 2002 1:56 PM To: Exchange Discussions Subject: RE: Exchange Redundancy Clustering will do that but you will not get load balancing - Microsoft's implementation of clustering is hot standby -----Original Message----- From: Soysal, Serdar [mailto:[EMAIL PROTECTED]] Sent: Wednesday, May 08, 2002 3:46 PM To: Exchange Discussions Subject: RE: Exchange Redundancy It's still called clustering. Serdar Soysal -----Original Message----- From: Mark Taylor [mailto:[EMAIL PROTECTED]] Sent: Wednesday, May 08, 2002 3:33 AM To: Exchange Discussions Subject: Exchange Redundancy Having just had our sole Exchange server go down, is there a way of having a redundant server (or load balancing) that is an exact replicar (in terms of user mailboxes etc..)? Basically i am after failover redundacy, so that if one server goes down it will not effect users abilities to send and recive mail. - Is this practical? _________________________________________________________________ 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] _________________________________________________________________ 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]
