Work around when not using Storage Spaces, or when LB policies have been set per-disk manually: Use the Set-MSDSMGlobalDefaultLoadBalancePolicy cmdlet from the MPIO module in Windows Powershell to specify a different LB policy to apply to all pool disks. Work around when using Storage Spaces or when LB policies have not been manually set per-disk: You can work around this issue by trying a different Load Balance policy using the appropriate options mentioned below: To resolve this issue, obtain updated firmware from your disk vendor. Note: This issue may occur when using Storage Spaces in conjunction with SAS disks and MPIO. The MPIO feature is enabled to provide access via both SAS ports.ĭisk firmware does not provide optimal performance when both SAS ports are in use. This issue can occur when disks are configured as below: On a Windows Server 2012, after enabling the Multipath I/O (MPIO) feature on a system using Serial Attached Storage (SAS) disks, the sequential write performance of disks used with MPIO decreases by approximately 50% when operating with the Round Robin load balancing policy. Many of these applications and more are available in the computer labs on campus.Windows Server 2012 Standard More. Some departments on campus may require students to purchase additional software applications.
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