Users Guide
Multipath and clustering setup
When conguring your VRTX solution with the Shared PERC 8 it may be necessary to tune your system for optimization according to your
specic usage scenario and conguration. Each operating system exposes dierent settings to the user. Below is a list of some of the
settings that may be helpful for your specic usage scenario. You should always review the documentation provided by the vendor of the
operating system for a more comprehensive explanation of these and other settings that are not listed in this document.
Topics:
• Conguring multipath support in Windows
• Multipath setup in Windows
• Conguring multipath support in VMware
• Multipath and clustering setup in VMware
• Multipath and clustering support for Linux
Conguring multipath support in Windows
In Windows, multipath support is enabled by installing the MPIO driver. The Shared PERC 8 device must be added to the list of devices
that are aggregated by MPIO after the device driver is installed.
NOTE
: If you do not have a virtual disk assigned to the host, the Dell Shared PERC 8 is not be available as a multipath device.
Perform the following steps to add the Shared PERC 8 card:
1 Open the MPIO control panel.
2 Click the Discover Multi-Paths tab.
3 Select DELL Shared PERC8 and click Add.
This is a one-time setup procedure. After the Shared PERC 8 device is added to the list of devices, the MPIO driver aggregates all
instances of the same virtual disk into a single one. The recommended multipath policy for Windows is round-robin (with subset).
Multipath setup in Windows
Multipath (MPIO) Settings — Dell recommends the following registry settings when conguring MPIO:
Table 4. Registry settings
MPIO Timer Value
HKLM\System\CurrentControlSet\Services\DISK\TimeOutValue 30
HKLM\system\CurrentControlSet\Services\MPIO\Parameters
\PathVerifyEnabled
0
HKLM\system\CurrentControlSet\Services\MPIO\Parameters
\PDORemovePeriod
60
HKLM\system\CurrentControlSet\Services\MPIO\Parameters
\UseCustomPathRecoveryInterval
1
5
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