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: C

Correct Answer: B

A Dell PowerStore protection policy contains two snapshot rules and one replication rule, and it applies to specific storage resources such as volumes and volume groups. These resources will run only the snapshot rules, not the replication rule. A snapshot rule allows you to create point-in-time copies of the data, which can be used to recover data in case of data loss or corruption. Snapshot rules are applied to specific volumes or volume groups, and only these resources will be backed up with the snapshot. A replication rule allows you to replicate data to a remote site for disaster recovery or data protection. Replication rules are applied to different resources such as Virtual Machines, File Servers, File Systems, etc. In this case, the snapshot rules will be applied to Volumes and Volume Groups, and the replication rule will be applied to other resources such as Virtual Machines, File Servers, File Systems.

Correct Answer: B

Correct Answer: B

A thin clone is a writeable copy of a volume, which shares the same data blocks as the parent volume. This allows the administrator to provide a copy of the production database volume to the test environment without affecting the production data. It also allows to test the data without affecting the production data, and also it doesn't require additional storage space.

Correct Answer: D

The maximum number of SAS buses per SP for a Dell Unity XT 480F without an additional SAS I/O module is 2. Each Dell Unity XT 480F has 2 Service Processors (SPs) and each SP has 2 SAS buses, for a total of 2 SAS buses per SP. SAS buses are used to connect the storage drives to the SPs and to the storage array. Each bus can support multiple drives and provide high-speed data transfer between the drives and the SPs.

Correct Answer: A

Correct Answer: D

"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."

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: C

The entire capacity of a particular drive size is only available when the drive count within the drive partnership group for the drive in question matches or exceeds the stripe width plus one drive. It is not recommended to mix different size drives of the same type for this reason, unless an adequate number of drives are available to meet or exceed the stripe width plus one drive requirement h16289-dell_emc_unity-dynamic_pools.pdf-Page 18-19

Correct Answer: A

https://dl.dell.com/topicspdf/sc-7-3_rn_en-us.pdf

Reference: https://www.delltechnologies.com/en-us/blog/storage-center-os-7-3-brings-big-performance-boost-to-sc-series-arrays/

Correct Answer: A

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: B

In multiprotocol implementations (both SMB and NFS protocols enabled), an end�to-end mapping from Windows Security ID (SID) to UNIX User ID (UID) and Group ID (GID) is required.

Correct Answer: B

The reason there is such a large range in the number of IOPS delivered by SSDs is the IOPS are truly dependent on the type of traffic the SC Series was designed to handle. The two biggest factors that will determine IOPS in an SSD environment are block size of the application and overall throughput.

Reference: https://downloads.dell.com/manuals/common/sc-series-performance-availability-best-practices-dell-emc-4024-bp-sc_en-us.pdf