Dell PowerVault MD3860i User Manual download pdf (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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Dell PowerVault MD3860i User Manual Page 30