Making Groups of logical disk
Hello, I have used for a while the blogs http://blogs.technet.com/b/kevinholman/archive/2009/11/05/making-groups-of-logical-disks-and-example-from-simple-to-advanced.aspx and it worked fine for a lot of groups... It is the first time I am doing it on a cluster, is there any specifics or limitation? ( Object is Windows Server 2008 Logical Disk AND ( Device Name Matches regular expression (?i:^C) ) AND ( Windows Computer.NetBIOS Computer Name Matches regular expression (?i:^MBSQLSPCL) ) ) ( Object is Windows Server 2000 Logical Disk AND ( Device Name Matches regular expression (?i:^D) ) AND ( Windows Computer.NetBIOS Computer Name Matches regular expression (?i:^MBSQLSPCL) ) ) ( Object is Windows Server 2008 Logical Disk AND ( Device Name Matches regular expression (?i:^F) ) AND ( Windows Computer.NetBIOS Computer Name Matches regular expression (?i:^MBSQLSPCL) ) ) ( Object is Windows Server 2008 Logical Disk AND ( Device Name Matches regular expression (?i:^G) ) AND ( Windows Computer.NetBIOS Computer Name Matches regular expression (?i:^MBSQLSPCL) ) ) ( Object is Windows Server 2008 Logical Disk AND ( Device Name Matches regular expression (?i:^H) ) AND ( Windows Computer.NetBIOS Computer Name Matches regular expression (?i:^MBSQLSPCL) ) ) ( Object is Windows Server 2008 Logical Disk AND ( Device Name Matches regular expression (?i:^L) ) AND ( Windows Computer.NetBIOS Computer Name Matches regular expression (?i:^MBSQLSPCL) ) ) ( Object is Windows Server 2008 Logical Disk AND ( Device Name Matches regular expression (?i:^M) ) AND ( Windows Computer.NetBIOS Computer Name Matches regular expression (?i:^MBSQLSPCL) ) ) ( Object is Windows Server 2008 Logical Disk AND ( Device Name Matches regular expression (?i:^Q|^R) ) AND ( Windows Computer.NetBIOS Computer Name Matches regular expression (?i:^MBSQLSPCL) ) ) I am getting the C, L, M, Q and R for both nodes but... D no drive appears in the selection F, G & H only one drive appears... Any iodea? Thanks, Dom System Center Operations Manager 2007 / System Center Configuration Manager 2007 R2 / Forefront Client Security / Forefront Identity Manager
April 7th, 2011 5:24pm

D doesnt show up in the group because you used Windows 2000 disk instead of Windows 2008. As for the rest of this disks - here is how disks work with clusters. Disk that are part of a cluster resource group are owned by one node at a time. When Logical disk discovery runs, it will discover the disk on a node, or undiscover the disk (delete) it if the disk has moved to another node since the last discovery run. Therefore - you should only see a single disk in your groups and discovered inventory at a time. There is a short time where you could possibly see two disks.... if you failed over the cluster recently, and discovery has picked up the new disk, but not undiscovered the old disk which is no longer present on the old node. Your dynamic groups will work fine, and this is the preferred method when creating overrides.... because if you created overrides of explicit disks - they would not work once a failover ocurred... you would have to create an override for disk on node1, then fail it over, then create an identical override for disk on node 2. Using a dynamic group solves that, however, there could be some lag time for the disk discovery/undiscovery, and then subsequent group population.Kevin Holman http://blogs.technet.com/b/kevinholman
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April 7th, 2011 6:41pm

Thanks Kevin I have the D: Group now... Good Catch I will check again but C: D: and H: should be on both nodes.... the rest of the disks F: G: L: M: Q: R: are shared and should not be doubled... I will try to see the next time the switch between the Active to the failover happened... If I sumarize between what I have and what is expetced: I RDP the two nodes and these are the results... C: & D: work fine as existing all times on both nodes... H: is missing from one node as I have it only once in my group... even it is a Drive always on both nodes. For the shared disks: F: & G: are fine I will check why I am getting L, M & Q from both nodes... may be some latency... waiting the next failover Thanks, Dom System Center Operations Manager 2007 / System Center Configuration Manager 2007 R2 / Forefront Client Security / Forefront Identity Manager
April 7th, 2011 7:19pm

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