A junior administrator recently made changes to an E-Series system. As a result of these changes, the management host lost the ability to manage the E-Series system through in-band management, but the host still has access to the ESeries data volumes.
In this scenario, what caused this issue?
A. The access volume was un-mapped
B. The management IPs were changed
C. The ownership of the management host’s volumes changed
D. Auto Load Balancing was disabled
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A
System Manager 11.7: (https://docs.netapp.com/ess-11/topic/com.netapp.doc.ssm-sam-117/GUID-97D91AE3-CE35-4157-BAD4-FFF33B1E97E2.html)
An access volume is a factory-configured volume on the storage array that is used for communication with the storage array and the host through the host I/O connection. The access volume is used in two instances:
– Automatic host creation – The access volume is used by the Host Context Agent (HCA) utility to push host information (name, ports, host type) to System Manager for automatic host creation.
– In-band management – The access volume is used for an in-band connection to manage the storage array. This can only be done if you are managing the storage array with the command line interface (CLI).
A.
access volumeA special volume that is used by the host-agent software to communicate management requests and eventinformation between the management station and the storage array. An access volume is required only for in-bandmanagement.in-band managementA method to manage a storage array in which a storage management station sends commands to the storage arraythrough the host input/output (I/O) connection to the controller. The SMagent must be installed for this method to workcorrectly.
A
In-band management has these characteristics
– “Ethernet cables are not required to connect controllers to the network.” in-band –> no ethernet
– Network configuration tasks for each controller are not required as there are no IP addresses involved.
– Only a name or an IP address for the host needs to be specified to add more storage arrays to it. After the host
name or IP address has been added, the agent software automatically detects any storage arrays attached to the
host.
– One LUN must be set aside for the access volume that allows communication between the management stations
and the storage array. This means there is one less LUN to use in configuring the storage array.
– Storage array management commands use the same path as data I/O; therefore, some of the bandwidth is not
available for data transfer.