Free EMC DES-1D12 Practice Exam with Questions & Answers

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Cascade replication refers to the replication of data from one site to another, in a sequential or cascading manner. In the case of Dell Unity XT, cascade replication refers to the asynchronous replication of a file resource from one site (site A) to another (site B), then from site B to another site (site C) and so on. This means that data is replicated from one site to another in an orderly fashion, and each site functions as both a source and a target for replication. This allows for multiple copies of the data to be kept in different locations, providing increased data availability and disaster recovery capabilities. It's important to note that cascade replication can also be used for block resources but is usually asynchronous.

Unisphere Central is the recommended software tool for the customer as it allows for the monitoring and reporting of multiple Dell Unity and Dell PowerStore arrays through a single interface. It provides a unified management experience and allows for efficient monitoring and troubleshooting of the storage environment.

Document: docu71319_dell-emc-unity-high-availability-a-detailed-review.pdf

Page: 20 FAIL SAFE NETWORKING (FSN) Dell EMC Unity OE version 4.2.1 introduces Fail Safe Networking (FSN). FSN is a high availability feature that extends link failover into the network by providing switch-level redundancy. FSN appears as a single link with a single MAC address and potentially multiple IP addresses. FSN can consists of Ethernet ports, link aggregations, or any combination of the two. FSN adds an extra layer of availability to link aggregations alone as link aggregations provide availability in the event of a port failure while FSN provides availability in the event of a switch failure. Each port or Link aggregation is considered as a single connection and only the primary port or link aggregation in an FSN is active at a time. All ports in an FSN must have the same MTU size, but the speed and duplex settings can vary.

The NAS server DNS can be enabled on the next page. For Directory Services, DNS configuration is required. Add at least one DNS server for the domain.

From the POWERSTORE ADMINISTRATION PARTICIPANT GUIDE,

" Resource balancer also considers the the following when placing volumes:

Whether the appliance is offline

Appliance failure status

Capacity utilization

"Volume and Volume Group Snapshots: Snapshots cannot be mapped to a host. To view the contents of a snapshot, you must first clone the snapshot then map the clone to a host."