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Required Adapter and Server OS Settings
102 Dell EMC Storage Compatibility Matrix for SC, PS, and FS Series Arrays | DSCM
A.2 Server OS Settings
A.2.1 Windows Server 2008r2
A.2.1.1 Recommended updates and hotfixes for Windows Server 2008r2
See the Microsoft Update Catalog at https://www.catalog.update.microsoft.com/Home.aspx to locate specific
KB downloads.
KB number
Title
KB3125574
Convenience rollup update for Windows 7 SP1 and Windows Server
2008 R2 SP1 (May 2016)
msdsm.sys version 6.1.7601.23403 (3/25/16)
mpio.sys version 6.1.7601.23403 (3/25/16)
msiscsi.sys version 6.1.7601.23403 (3/25/16)
storport.sys version 6.1.7601.23403 (3/25/16)
A.2.1.2 Recommended MPIO registry settings for Windows Server 2008r2
The recommend registry settings listed in this section can be applied using the registry editor (regedit.exe) or
through PowerShell. The registry editor can be used on all versions of Windows Server Desktop (Windows
Server with a GUI).
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