Supero SC836E1-R800B, User Manual

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6-3
C hapt er 6 : C ha ssis Se tup an d M a i nt e nanc e
6-3 Failover
Fa i lov er is th e ab i l i ty to automat i cally s w i tch to a red un d ant path wh e n a p ri ma r y
path fa i l s o r b e com es unava i labl e. Fa i lov er is automat i c an d re qu ires no act i on
on th e pa r t of th e Ad m i n is t r ato r.
T h e SC 836EL2 backplan e ha s two e xpan ders wh i ch allow e ff e ct i v e fa i lov er an d
re cov er y . T h is f e atu re is not s uppo r t ed by th e SC 836EL1 backplan e.
Single Host Bus Adapter
I n a si ngl e ho s t bu s configu r at i on, th e
backplan e conn e ct s to on e H o s t B u s
Ad apt er (HBA).
PRI_J0
PRI_J1
PRI_J2
SEC_J0 SEC_J1
SEC_J2
J17
WWN
SAS HBA
Port A
Expander 1
Port B
Expander 2
PRI_J0
PRI_J1
PRI_J2
SEC_J0 SEC_J1
SEC_J2
J17
WWN
SAS HBA
Port A
Expander 1
Port B
Expander 2
Single Host Bus Adapter
Failover
I f th e E xpan der o r d ata path i n Po r t A
fa i l s , th e s y s t e m w i ll automat i cally fa i l
ov er to Po r t B.