Live Migration transfers a running BS2000 system from one server unit to another server unit. Live Migration can be carried out with SHC-OSD without noticeable operating interruptions of the storage systems.
SHC-OSD is affected by Live Migration due to the LAN connection between SHC-OSD and the StorMan or SYMAPI server. During the Live Migration, the communications partner of SHC-OSD in the LAN changes. During the Live Migration, the communication connections are reconfigured by BCAM.
Live Migration for ETERNUS DX/AF
For IPv4 connections between SHC-OSD and StorMan, SHC-OSD is not interrupted during
a Live Migration.
For SE servers, the communication between SHC-OSD on the server unit and StorMan on the management unit is usually carried out via the internal IP6 network. The IP6 network is reconfigured during a Live Migration. During a Live Migration this can cause delays in the minute range when running SHC-OSD commands.
Live Migration for Symmetrix/VMAX3
For Symmetrix/VMAX3 storage systems, SHC-OSD generally communicates with the external SYMAPI servers via IPv4. SHC-OSD is not interrupted during a Live Migration.