Dell PowerVault MD3260 Dell PowerVault MD Storage Array VMware vCenter Plug-in - Page 31

Configuring ALUA Support, Changing Your Default Multipath Policy

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This figure shows how an eight-port HBA configuration can be configured: Figure 24. Eight-HBA Port Configuration Configuring ALUA Support If your MD storage array firmware supports Asymmetric Logical Unit Access (ALUA), active-active throughput will enable LUN ownership to be transferred automatically to the alternate RAID controller in a failure event. Changing Your Default Multipath Policy Depending on your environment, you may be able to achieve higher performance by switching the default multipath policy from Most Recently Used (MRU) to Round Robin (RR). To identify the current SATP claim rule and PSP policy used by your storage array, use the following command: #esxcli storage nmp device list Dell MD Storage Array vCenter Plug-in | 31

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Dell MD Storage Array vCenter Plug-in
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This figure shows how an eight-port HBA configuration can be configured:
Figure 24.
Eight-HBA Port Configuration
Configuring ALUA Support
If your MD storage array firmware supports Asymmetric Logical Unit Access (ALUA), active-active
throughput will enable LUN ownership to be transferred automatically to the alternate RAID controller in a
failure event.
Changing Your Default Multipath Policy
Depending on your environment, you may be able to achieve higher performance by switching the default
multipath policy from Most Recently Used (MRU) to Round Robin (RR).
To identify the current SATP claim rule and PSP policy used by your storage array, use the following
command:
#esxcli storage nmp device list