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Required Adapter and Server OS Settings
109 Dell EMC Storage Compatibility Matrix for SC, PS, and FS Series Arrays | DSCM
MPIO Registry Settings: HKLM\SYSTEM\CurrentControlSet\Services\mpio\Parameters
Setting name
Description
Default
value
Recommended
value
PDORemovePeriod
This setting controls the number
of seconds that the multipath
pseudo-LUN remains in system
memory, even after losing all
paths to the device. When this
timer value is exceeded, pending
I/O operations will be failed, and
the failure is exposed to the
application rather than
attempting to continue to recover
active paths. The maximum time
allowed is MAXULONG (49,000
seconds).
20
120
PathRecoveryInterval
This represents the period after
which PathRecovery is
attempted. This setting is only
used if it is not set to 0 and
UseCustomPathRecoveryInterval
is set to 1.
40
25
UseCustomPathRecoveryInterval
If this key exists and is set to 1, it
allows the use of
PathRecoveryInterval.
0
1
PathVerifyEnabled
This flag enables path
verification by MPIO on all paths
every N seconds (where N
depends on the value set in
PathVerificationPeriod).
This Boolean function must be
filled with either 0 (disable) or 1
(enable). By default, it is
disabled.
0
1
PathVerificationPeriod
This setting is used to indicate
the number of seconds with
which MPIO has been requested
to perform path verification. This
field is only honored if
PathVerifyEnabled is TRUE. This
timer is specified in seconds. The
default is 30 seconds. The
maximum allowed is
MAXULONG.
30
no change