DES-1D12 Online Practice Questions and Answers

Correct Answer: C

DELL PDF document about dynamic pools: h16289-dell_emc_unity-dynamic_pools.pdf Page 20-21. The smallest RAID 5 stripe width the system supports is a 4+1. The smallest dynamic pool created with the RAID 5 4+1 configuration is 6 drives. The minimum drive count includes the number of drives specified in the stripe width, plus the hot spare capacity. The hot spare capacity is selected by the user at pool creation, and can either be set to 1 or 2 drives for every 32 drives in the pool.

Correct Answer: B

Correct Answer: D

The embedded module in a Dell Unity XT 480F system provides management functionality for the system, such as control of the storage array, monitoring of system health and performance, and management of storage resources. This embedded module allows you to manage the system through an intuitive web-based interface or via command-line interface.

Correct Answer: C

Based on the customer's monthly data access profile, where block data is accessed infrequently but frequently during month-end reporting, the technical architect should recommend a hybrid solution using FAST VP and FAST Cache. FAST VP (Fully Automated Storage Tiering for Virtual Pools) is a feature that automatically tiers data across different types of storage media based on access patterns. With FAST VP, frequently accessed data will be automatically moved to faster storage media such as flash, while infrequently accessed data will be moved to slower, less expensive storage media such as disk. FAST Cache is a feature that increases the performance of Unity storage systems by caching frequently accessed data on flash storage. With this hybrid solution, the customer will have the best of both worlds: high-performance flash storage for frequently accessed data, and lower-cost disk storage for infrequently accessed data. This will help the customer to improve performance during month-end reporting and save costs for infrequently accessed data. It's important to note that this design should be evaluated based on the specific requirements, workloads and expected growth of the customer.

Correct Answer: B

From the POWERSTORE ADMINISTRATION PARTICIPANT GUIDE, " Resource balancer also considers the the following when placing volumes:

1.

Whether the appliance is offline

2.

Appliance failure status

3.

Capacity utilization

Correct Answer: A

Correct Answer: C

Limit per cluster = 32 replication rules

Correct Answer: A

Correct Answer: D

Correct Answer: B

7% is the recommended minimum amount of Flash that a technical architect should specify when designing a Dell Unity XT 480 using the System Designer option of Sizer. This is because, Unity XT storage systems require a certain amount of flash storage to handle system-wide functions such as metadata, snapshots and other storage services.

Correct Answer: D

This ensures that the drive is properly connected and communicating with the array, and that it is functioning as expected. Additionally, the new drive should be added to an existing DRS(Drive Replacement Set) and if necessary, the keystore should be backed up and the drive should be formatted.

Correct Answer: A

Reference: https://www.delltechnologies.com/en-us/collaterals/unauth/white-papers/products/storage/h18156-dell-emc-powerstore-snapshots-thin-clones.pdf (27)

Correct Answer: A

An administrator can use a user quota to limit the amount of storage that the user consumes on a Dell PowerStore system. A user quota is a limit that is set on the quota tree, which is a hierarchical structure that organizes storage resources and sets limits on how much storage can be used at each level. The user quota is applied to a specific user or group of users and limits the amount of storage that can be consumed by that user or group of users.

Correct Answer: C

The Dell PowerStore appliance provides two methods to migrate storage resources within the same cluster: Assisted Migration and Volume Motion. Assisted Migration: This method allows the administrator to manually initiate and control the

migration process, and it allows for the migration of individual resources such as LUNs, file systems and snapshots.

Volume Motion: This method allows the administrator to move a LUN or file system from one storage pool to another on the same PowerStore appliance or within the same cluster. This is done without any disruption to the hosts accessing the

data and it can be automated with the use of policies.

It's important to note that the Live Migrate and Migrate options are not available to migrate storage resources within the same cluster in Dell PowerStore.

Correct Answer: A

FAST Cache is an intelligent caching technology that optimizes data access for OLTP workloads by tracking and promoting data at the granularity of 8KB blocks. It uses a combination of flash memory and DRAM to store frequently accessed data, allowing the system to quickly access the most frequently used data, reducing latency and improving overall performance.