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PowerPath for CLARiiON
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Lesson Objectives
Ientif! the feat"res of PowerPath
Ientif! insta##ation an config"ration
$rocesses for PowerPath
Ientif! tro"b#eshooting $roce"res for
PowerPath
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A server host%resient software $ro"ct that wor&s
with a 'e## ( )*C or +!,,etri-. storage s!ste, to
e#iver inte##igent I/O $ath ,anage,ent
A re$#ace,ent for A0 in the 'e## ( )*C environ,ent
A a"to,ate $ath fai# over an #oa ba#ancing
a$$#ication for heterogeneo"s environ,ents
+"$$ort ,a-i,", 1 $ath to a sing#e target evice
hat is PowerPath 4
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*"#ti$#e active $aths fro, host to L6N
)ight active $aths 71 tota# or 89 $er +P:; fro, host
to L6N
+et of co,,on f"nctions Loa%ba#ancing a#gorith,s
Path ,aintenance
A"to%restore
+tatic $ath a##ocation
L6N IO $rioriti
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=ost base software
O+ +$ecific versions> +o#aris? AI@? inows?
Netare
Passive I/O *onitoring
On )rror ai# to A#ternate Path 7*"#ti%Path;
Or to a#ternate +P 7'"a# Connect;
A0 Review
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DBMSDBMS ManagementManagementUtilsUtils
File SystemFile System
Logical Volume ManagerLogical Volume Manager
SCSISCSI
ControllerController
ApplicationsApplications
PowerPathPowerPath
SCSISCSI
DrierDrierSCSISCSI
DrierDrierSCSISCSI
DrierDrierSCSISCSI
DrierDrierSCSISCSI
DrierDrierSCSISCSI
DrierDrier
SCSISCSI
ControllerControllerFi!reFi!re
ControllerControllerFi! reFi! re
ControllerControllerSCSISCSI
ControllerControllerSCSISCSI
ControllerController
"pen Systems #"ST
hat is PowerPathhat is PowerPath
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A"to Probe> Perioica##! $robe inactive $aths
6ses +C+I INB co,,an for $robe
0est one L6N $er =A%D+P connection ro"gh#!ever! 3EE secons
A"to Restore>
Perioica##! $robes ai#e/C#ose $aths to eter,ine
if the! been re$aire
Or !o" can ,an"a##! restore
PowerPath eat"resPowerPath eat"res
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SymmOpt / ClarOpt (default)I/O requests are balanced across
multiple paths based on
composition of reads, writes, plus user assignable priority.
Round_Robin
I/O requests are distributed to each available path in
turnLeast_I/Os
I/O requests are assigned to the path with the fewest number
of
requests in the queue.
Least_BlocksI/O requests are assigned to the path with the
fewest total blocks in
the queue.
PowerPath Loa a#ancingPowerPath Loa a#ancing
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A0 vs PP
A0 PowerPath
+tatic #oa ba#ance Po#ic! base #oaba#ance
*an"a# restore A"to restore
6$ to 1 $aths G 2 O+ 6$ to 1 $aths a## O+
A"to Path Chec&
Path *anage,ent
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PowerPath License
o"r License PowerPath asic
No License (Only CDE Support)
PowerPath aseBase License, Failover Only, No load !alancin"
PowerPath )nter$rise
Failover#load !alancin", Clariion Only
PowerPath )nter$rise P#"s
Failover#load !alancin", Clariion # Sy$$etri%
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Pre$are the +torage
+tart ai#over +et"$ i
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)ach e-tension sho"# have its own #icense &e!
PowerPath wi## wor& "ner Hasic ai#over ,oe if no
#icense insta##e
6se e,c$reg Ginsta## to a a #icense to $ower$ath in#in"- an
"ni-
PowerPath Licensing
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0he PowerPath *onitor #ocates on the tas& bar of
inows es&to$? contin"o"s#! ,onitors the stat"s
of !o"r PowerPath config"ration
+et to a#ert !o" with vis"a# an/or a"ib#e c"es when
the stat"s changes? s"ch as so"n an a#ar,? restore
the Power$ath A,inistrator *ain inow? f#ash the
tas& bar icon? or an! co,bination thereof
PowerPath *onitor
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A gra$hica# "ser interface for config"ring? ,onitoring?
an ,anaging PowerPath evices
PowerPath A,inistrator
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PowerPath A,inistrator
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Power,t 6ti#it!
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Power,t 6ti#it!
ost
=ost
+witch
+torage+!,, / CLARiiON
!po"ermt display# !po"ermt display pat$s# !po"ermt display
ports#
