Best Regards. For those of you who are involved with the administration server that implements clustering high avaibility, may often hear the term fencing or may be you have to apply,
Fencing is the disconnection of a node from shared storage. Fencing cuts off I / O from shared storage, Thus Ensuring data integrity. A fence device is a hardware device that can be used to cut off a node from shared storage. This can be accomplished in a variety of ways: powering off the node via a remote power switch, disabling a Fibre Channel switch ports, or revoking a host’s SCSI 3 reservations. A fence agent is a software program that connects to a fence device in order to ask the fence device to cut off access to a node’s shared storage (via powering off the nodes or removing access to the shared storage by other means)…
To learn more here
https://access.redhat.com/site/articles/28603 or http://www.centos.org/docs/4/4.5/SAC_Cluster_Suite_Overview/s2-fencing-overview-CSO.html or https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/High_Availability_Add-On_Overview/ch-fencing.html
one of the methods that can be used is the use of fibre channel switch as a fencing device, and Mikrotik already have functions as a switch manageabel , I would like to invite you all to the discussion about the impossibility of Mikrotik serves as the fencing device. thank you for your interest
