Dell PowerVault MD3260i - Manual (Page 30)

Figure 21. 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 22. 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
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