Dell PowerVault MD3600f User Manual page 26

Figure 22. Double Fai lure
This method d works well t to maintain th
active path f for each HBA A group. Ther
at a time. To o achieve high her I/O throug
group the HB BAs in pairs and create vir
configuratio n but also all ows for two o
Figure 23 . F From the stora age array, the
then be map ped directly t to the new ho
HBAs in the e same manne er. This does
hosts/host gr roups to fully y use the fibre
in the array, the Automat tic ESX host c
each zone in n the and the u user must ver
pair group.
Dell MD Storage A Array vCenter Plug g-in
he in-case of a hardware fa
refore, if you have an ESX
ghput from th he ESX host t
rtual hosts fo or each pair of
of the HBAs to be active a
e second pair of HBAs is d
ost or host gro oup. This sam
require additi ional manage
e channel ban ndwidth betwe
configuration n utility canno
rify that a sing gle HBA is c
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failure; howev ver, MRU onl
X host with fo ur HBAs, onl
to the storage e array, it is re
f HBAs. This s allows for a
at the same tim me versus a s
defined as a s separate host a
me methodolo ogy can be use
ement to balan nce the LUN
een all HBA groups. When
ot determine w which HBAs
onnected to b both fabric zo
ly maintains o one
ly one HBA i is active
ecommended d that you
fully redunda ant
single HBA. S See
and virtual di isks can
ed to group a dditional
s between the e
n this method d is used
are configure ed to
ones for each HBA