Dell POWERVAULT MD3620I - Manual (Page 23)

Figure 12. 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.
Figure 13. Device List Command Output
Adding A SATP Claim Rule To Enable ALUA And Change The Multipath Policy To Round
Robin
To create the new claim rule, use the following command: #esxcli storage nmp satp rule add -s VMW_SATP_ALUA -V
DELL -M array_model -c tpgs_on -P VMW_PSP_RR -e “Dell ALUA Claim Rule”. Replace the array model with one of the
following:
• MD32xx
• MD32xxi
• MD36xxi
• MD36xxf
This command:
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