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Required Adapter and Server OS Settings
103 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
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
RetryCount
This setting specifies the number
of times a failed I/O if the DSM
determines that a failing request
must be retried. This is invoked
when DsmInterpretError() returns
Retry = TRUE. The default
setting is 3.
3
no change
(FC or iSCSI
systems)
15 (front-end
SAS systems
only)
RetryInterval
This setting specifies the interval
of time (in seconds) after which a
failed request is retried (after the
DSM has decided so, and
assuming that the I/O has been
retried a fewer number of times
than RetryCount). This value is
specified in seconds. The default
is 1 second.
1
no change
DiskPathCheckEnabled
If the DiskPathCheckEnabled key
is set to a nonzero value, the
MPIO component creates a path
recovery worker.
-
1