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Active/Passive ---> Active/Active
microsoft.public.sqlserver.clustering microsoft.public.sqlserver.clustering
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#1
 
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Active/Passive ---> Active/Active -
07-28-2004
, 05:42 PM
#2
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Hi Allan, Thanks for replying. I should make myself clearer. Right now I have 2 Dell 6450's attached to EMC Clarion. They are setup as Active/Passive cluster. The company bought 2 new Dell 6650's and I will be swapping out the servers one at a time to upgrade the H/W. One of the developers wants to go Active/Active and the only way I think I can do this is uninstall SQL and uninstall the cluster, then reinstall the |
Active/Passive since we couldn't afford the downtime.
Quote:
| "Allan Hirt" wrote: You mean going from a single instance cluster to a multiple instance cluster (this is the correct terminology). It depends on your disk setup. Remember that each SQL virtual server needs its own set of dedicated disks, not to mention a dedicated disk for the quorum, and if you're using W2K3, one for MS DTC. Also, you need to ensure you have enough memory and processor to handle the additional load. I suggest you look at any of the numerous sources out there, including the SQL 2K HA book by MS Press, or the failover clustering whitepaper on Microsoft.com |
#3
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I think your developer misunderstands the whole 'active-passive...' nomenclature. Do you want one or two virtual servers on your cluster? If one, then it is 'active-passive' or 'single-instance'. Two or more means 'active-active' or 'multi-instance'. If you want to transition your existing single instance to new hosts, that is a different issue. -- Geoff N. Hiten Microsoft SQL Server MVP Senior Database Administrator Careerbuilder.com I support the Professional Association for SQL Server www.sqlpass.org "plane123" <plane123 (AT) discussions (DOT) microsoft.com> wrote in message news:305B32A8-6A53-4337-A2AE-48F60DE459CB (AT) microsoft (DOT) com... Hi Allan, Thanks for replying. I should make myself clearer. Right now I have 2 Dell 6450's attached to EMC Clarion. They are setup as Active/Passive cluster. The company bought 2 new Dell 6650's and I will be swapping out the servers one at a time to upgrade the H/W. One of the developers wants to go Active/Active and the only way I think I can do this is uninstall SQL and uninstall the cluster, then reinstall the cluster and and reinstall SQL. If that's the case I think we'll stay with Active/Passive since we couldn't afford the downtime. "Allan Hirt" wrote: You mean going from a single instance cluster to a multiple instance cluster (this is the correct terminology). It depends on your disk setup. Remember that each SQL virtual server needs its own set of dedicated disks, not to mention a dedicated disk for the quorum, and if you're using W2K3, one for MS DTC. Also, you need to ensure you have enough memory and processor to handle the additional load. I suggest you look at any of the numerous sources out there, including the SQL 2K HA book by MS Press, or the failover clustering whitepaper on Microsoft.com |
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