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K2 client media (iSCSI or LAN Connect) connection failover behavior



If the following system connection or component fails to respond to network communication:

  • Media (iSCSI or LAN Connect) network “A” connection between a K2 SAN-attached system and the GigE switch

Then the following failover behavior occurs:

  1. The K2 SAN-attached system drops communication on its “A” media port and begins using its “B” media port and the “B” media (iSCSI or LAN Connect) network. The network adapter on the “B” K2 Media Server provides access to the Fibre Channel connected RAID storage.
  2. Control traffic keeps using the same path to K2 Media Server “A”.
  3. K2 Media Server “A” is still the media file system/metadata server. The media file system (SNFS) and media database do not fail over.
  4. The other K2 SAN-attached systems (not affected by the component failure) keep using the same paths for media and control, as in pre-failover behavior. This means the K2 SAN-attached systems unaffected by the failover are using the network adapter on the “A” K2 Media Server to provide access to the Fibre Channel connected RAID storage, while at the same time the affected K2 SAN-attached systems are using the network adapter on the “B” K2 Media Server to provide access to the Fibre Channel connected RAID storage. In this case both RAID controller are simultaneously providing disk access.

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