Grass Valley UIM v.2.1.1 - Manual (Page 57)

February 5, 2008 UIM Instruction Manual 57
About load balancing when multiple UIM-SAN-GEIPs are used
About load balancing when multiple UIM-SAN-GEIPs are used
There can be multiple UIM-SAN-GEIPs deployed in an Open SAN Shared Storage
system. The number of UIM-SAN-GEIPs needed is determined by a combination of
the following requirements: the number of simultaneous transfer streams; transfer
performance.
When multiple UIM-SAN-GEIPs are used, host name aliasing is used in the hosts file
to assign the UIM-SAN-GEIPs to the Profile XP platforms in the Open SAN for
proper load balancing. Referring to the example system on
page 51 , SAN1_UIM1
handles transfer requests for Profiles SAN1_XP1 and SAN1_XP2 while SAN1_UIM2
handles transfer requests for SAN1_XP3 and SAN1_XP4. To accomplish this, the
following entries are added to the master host file.
192.168.100.157 SAN1_UIM1 SAN1_XP1_UIM SAN1_XP2_UIM
192.168.100.158 SAN1_UIM2 SAN1_XP3_UIM SAN1_XP4_UIM
192.168.200.157 SAN1_UIM1_he0 SAN1_XP1_he0 SAN1_XP2_he0
192.168.200.158 SAN1_UIM2_he0 SAN1_XP3_he0 SAN1_XP4_he0
NOTE: Multiple UIM-SAN-GEIPs do not provide automatic failover capability. If
a UIM-SAN-GEIP becomes unavailable, transfer requests will fail for all Profile
platforms assigned to it.
SAN1_XP1
SAN1_XP2
SAN1_FSM2
SAN1_FSM1
Fibre Channel Switch Fabric (SCSI)
SAN1_UIM1
1000BT Ethernet LAN (Streaming) x.x.200.x
10/100BT Ethernet LAN (Control) x.x.100.x
Shared Storage
Profile Open SAN Shared Storage