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 Windows 2008R2 Cluster SQL 2005 Instances Missing

Author  Topic 

doug-uvmmed
Starting Member

1 Post

Posted - 2012-03-12 : 15:49:24
- Windows 2008R2 SP1, 64-bit, 3 node, node majority, cluster, currently patched
- Dell M610 blades, dual quad processors, 48GB RAM each
- 6 nics, 5 in use: 1 Public (1G), 2 SAN (MPIO, 10G each), 1 Private (Cluster, 1G)
- Shared disks on Dell EqualLogic iSCSI SAN, current firmware, current Dell HIT (MPIO) and current MS MPIO DSM
- All nics set up properly for iSCSI (jumbo frames, flow control, receive-side scaling, etc.)
- SQL 2005 SP4, 64-bit, Enterprise, currently patched
- 4 instances, 2 on each of 2 nodes, third node completely passive as failover for either of the other two
- Cluster Validation shows cleanly, except for SAN nics which are on the same subnet
- No cluster trafic enabled on the SAN nics, switches are isolated to SAN VLAN only
- Cluster is set up for any node to accept any service or resource
- Problem:
•All instances do not appear as SQL Server service on all nodes, therefore failover to any node cannot/does not work
•Not consistent: some instances appera on some nodes and not on others ... they are not always the same instance
•For example:

Node 1
•Instance A
•Instance B

Node 2
•Instance A
•Instance B
•Instance D

Node 3
•Instance A
•Instance B
•Instance C
•Instance D

Note: Preferred nodes are set to all 3 on all instances

Any ideas from any of you what's causing this? And, ideas about how to get all instances on all nodes? The only thing I can think of is to:
1.Evict Node 1 (a quorum disk will have to be put in place and Disk Majority set)
2.Then re-add Node 1
3.Evict Node 2
4.Then re-add Node 2
5.Remove quorum and reset to Node Majority

This feels a bit draconian, and this is a production cluster that I have very little leeway in bring down for any length of time.

Ideas?

Thx...
   

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