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Windows Server single-path and MPIO configuration recommendations for SC Series storage
30 Dell EMC SC Series Storage and Microsoft Multipath I/O | CML1004
Note: The registry settings in Table 5 need to be created on a Windows Server 2008 R2 server. Both settings
should be created as DWORD (32-bit) values.
Recommended disk registry settings location:
HKLM\SYSTEM\CurrentControlSet\Services\mpio\Parameters
Setting name
Description
Default
value
Recommended
value
DiskPathCheckEnabled
If the DiskPathCheckEnabled key is set to a nonzero
value, the MPIO component creates a path recovery
worker.
-
1
DiskPathCheckInterval
If the DiskPathCheckInterval key is set to 0, or if the
key does not exist, the MPIO component uses a
default time interval. The default time interval is half
of the time that is set in the PDORemovePeriod
parameter.
-
25
Note: The registry settings in Table 6 only apply to Windows Server 2012 or later.
Recommended disk registry settings location:
HKLM\SYSTEM\CurrentControlSet\Services\mpio\Parameters
Setting name
Description
Default
value
Recommended
value
DiskPathCheckDisabled
If the DiskPathCheckDisabled key is set to zero, the
MPIO component creates a path recovery worker.
0
no change
DiskPathCheckInterval
If the DiskPathCheckInterval key is set to 0, or if the
key does not exist, the MPIO component uses a
default time interval. The default time interval is half
of the time that is set in the PDORemovePeriod
parameter.
10
25
Recommended disk registry settings location: HKLM\SYSTEM\CurrentControlSet\Services\disk
Setting name
Description
Default
value
Recommended
value
TimeoutValue
Disk time-out is a registry setting that defines the time that
Windows will wait for a hard disk to respond to a command.
Installing host bus adapters (HBA) or other storage controllers
can cause this key to be created and configured.
60
no change