Home » Network Appliance » NS0-520 » Which two actions would you perform to ensure that each host has valid multipathing?
You are designing a new 4-node AFF A400 SAN cluster with 20 ISCSI hosts. Each AFF A400 node will have four data LIFs. Each ISCSI host needs to access every LUN over two LIFs per node on every SAN node.
In this scenario, which Netapp SAN feature enable this connectivity?
A. Port sets
B. HBA queue depth
C. Selective LUN mapping
D. Asymmetric namespace
Answer: A
Explanation:
SLM will choose 4 LIFs per node, being 8 LIF total (owner and HA partner), enabling portsets will help to limit the ports per node… that way we can stablish only 2 LIF per node.
Creating port sets and binding igroups to port sets
In addition to using Selective LUN Map (SLM), you can create a port set and bind the port set to an igroup to further limit which LIFs can be used by an initiator to access a LUN. If you do not bind a port set to an igroup, then all of the initiators in the igroup can access mapped LUNs through all of the LIFs on the node owning the LUN and the owning node’s HA partner.
You can find more information on this link:
https://docs.netapp.com/ontap-9/index.jsp?topic=%2Fcom.netapp.doc.dot-cm-sanag%2FGUID-5CC27202-A43F-429F-AB13-C70E7CD58E09.html
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