The Microsoft Cluster
Originally written by
- The Microsoft cluster service supports 2-node and N-node
- In a two-nodes configuration, SCSI reserve commands are used to handle
- If there is a "split brains", the formerly-active node will send a SCSI
reserve every 3 seconds, while the formerly-passive node will send it
every 5 seconds.
- The first to manage to get SCSI reservation, becomes active.
- in an N-node configuration, usually a Quorum disk is used to overcome
- A quorum disk is used to handle a 'vote' for the active node. In order to
win, a node must get (N/2)+1 votes. Thus, N is normally an odd number
- Very commonly found in the field.
- (Probably) works only with SCSI disk devices.