You want to create a data volume on aggr0 and you receive a message with the following warning:
''Warning: You are about to create a volume on a root aggregate. This may cause severe performance or stability problems and therefore is not recommended. Do you want to proceed?''
What is the reason for this severe performance or stability problem?
Correct Answer:
B
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One possibly cause is Disk I/O contention on the data volume.
The root volume in Cluster-Mode is used to store and update various tables of the replicated database. Crucial information regarding the locations of LIFs, volumes, aggregates, and different jobs required to run in the cluster are stored in these tables. If a root aggregate has very busy data volumes, the disks in the aggregate will experience higher latency. When a node is unable to update its copy of the replicated database fast enough, it will consider itself unhealthy and stop serving all the data until it can catch up. This is extremely disruptive and affects all the volumes on the node, even if the cause is related to the data volumes stored on the root aggregate only.
Reference: Why is a warning displayed when attempting to create one or more data volumes in the root aggregate in Data ONTAP Cluster-Mode? https://kb.netapp.com/support/index?id=3013563&page=content&locale=en_US
You have completed a clustered Data ONTAP installation for a new customer. You are now ready to hand off the system to the customer.
Which three actions should you take at this stage in the installation process? (Choose three.)
Correct Answer:
ABE
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What happens to the NTP configuration in clustered Data ONTAP 8.3 when a node joins a cluster?
Correct Answer:
B
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A node that joins a cluster automatically adopts the NTP configuration of the cluster.
Reference: How to configure and troubleshoot NTP on clustered Data ONTAP 8.2 and later using CLI https://kb.netapp.com/support/index?page=content&id=1014787
You are assigned to install five DS2246 with twenty-four 400 GB SSDs per shelf to a single node system.
According the NetApp, which statement is correct?
Correct Answer:
D
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Up to 10 shelves are supported per stack for the DS2246, so we one stack is enough as we only have five shelves (DS2246s).
Reference: Making the Move from FC to SAS Storage
http://www.netapp.com/as/communities/tech-ontap/tot-fc-sas-1101-as.aspx