RAID Disk Topologies
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Dual-port Duplex Two-Host RAID Configuration
Figure 3-5 illustrates a dual-port, duplex, dual-path RAID configuration that uses two
hosts
. This configuration:
• Supports transfer speeds up to 400 MB/s
• Supports failover capabilities
• Supports SGI FailSafe high-availability solutions
Figure 3-5 Dual-port Dual-path Attached Duplex RAID Topology
Caution: If two independent systems access the same volume of data and the operating
system does not support file locking, data corruption may occur. To avoid this, create two
or more volumes (or LUNs) and configure each volume to be accessed by one system
only.
LRC B
SFP
Host 0
SFP
Host 1
LRC A
SFP
Host 0
SFP
Host 1
16 dual-ported drives
Midplane
QLogic
2310 HBA
QLogic
2310 HBA
FFX-2 FFX-2
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