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- Red Hat Enterprise Linux
this is the output of multipath -ll on one of our servers.
\_ round-robin 0 [prio=100][enabled]
\_ 0:0:1:1 sdd 8:48 [active][ready]
\_ 1:0:0:1 sdf 8:80 [active][ready]
\_ round-robin 0 [prio=20][enabled]
\_ 0:0:0:1 sdb 8:16 [active][ready]
\_ 1:0:1:1 sdh 8:112 [active][ready]
if you look at the groupings it appears that we have each group with one path to SPA and one to SPB. if I am reading this correctly - host-channel-target-lunid.
We are using ALUA surley this would introduced 50% of i/o that would be non optimized.
CX4 using ALUA failover mode 4