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  3. DES-1721

Dell DES-1721 Exam (page: 2)
Dell Specialist - Implementation Engineer-SC Series Exam
Updated on: 12-Feb-2026

Viewing Page 2 of 20
DES-1721 PDF 147 Questions

Assume a storage administrator is using the recommended storage profile.
What describes the distribution of volume data residing in an SC series storage array that has 15K and 7K as the back- end?

  1. New and frequently accessed replay data in Tier 1 RAID 5Aged replay data and inaccessible data in Tier 3 RAID 6
  2. New data in Tier 1 RAID 10Frequently accessed replay data in Tier 1 RAID 5Aged replay data and inaccessible data in Tier 3 RAID 6
  3. New data in Tier 1 RAID 10Frequently accessed replay data in Tier 2 RAID 5Aged replay data and inaccessible data in Tier 3 RAID 6
  4. New and frequently accessed replay data in Tier 1 RAID 10Aged replay data and inaccessible data in Tier 3 RAID 6

Answer(s): B



A customer is facing poor performance on all synchronously replicated volumes every Thursday between 4 PM and 6 PM. All departments have checked their applications for any batch jobs; however, nothing was found. The I/O graphs do not show any anomaly and the replication links are not saturated.
What is the possible reason for this behavior?

  1. Switches used for replication are restarting
  2. QoS Bandwidth Limit is enabled in the QoS node
  3. Data Progression is consuming all disk performance
  4. Automatic report creation is impacting replication

Answer(s): B



A customer is concerned they are over utilizing their 7K drives.
Where can information about the real time I/O usage of individual drives be viewed?

  1. Hardware > Disks > [disk folder] > [disk number]
  2. Charting > Disks > [disk folder] IO Charts
  3. Charting > Disks > [disk folder] > [disk number]
  4. Hardware > Disks > [disk folder]

Answer(s): A



A company is using an SC4020 array and the storage administrator wants to expand the available capacity by adding 92, 3.5" disk drives.
Which expansion enclosure(s) can be used to meet the demand?

  1. 1x SC280 drive bay
  2. 2x SC180 drive bays
  3. 4x SC220 drive bays
  4. 8x SC200 drive bays

Answer(s): D



You have implemented two SC Series systems at a customer site. The Dell Storage Manager (DSM) Suite has been installed on a Microsoft Windows server. Both Storage Centers have been installed and added to the DSM. However, several days after the installation, the customer is only able to see one Storage Center in the DSM GUI.
Which recommended action will correct this issue?

  1. Check the network connections to the missing Storage Center
  2. Reinstall the DSM including the database
  3. Connect the DSM to the Data Collector
  4. Restart the missing Storage Center

Answer(s): D



What is the maximum number of disks that can be supported by an SC4020 running SCOS 6.6.4 or later?

  1. 120
  2. 128
  3. 192
  4. 196

Answer(s): D



You need to set up the iDRAC IP address on an SC Series controller with the following details:

·IP address 192.168.0.160
·subnet mask 255.255.255.0
·gateway 192.168.0.1
Which commands should be used to complete this task?

  1. ifconfig inet set eth0 ip 192.168.0.160ifconfig inet set eth0 netmask 255.255.255.0ifconfig inet set eth0 gateway 192.168.0.1
  2. ifconfig inet set eth1 ip 192.168.0.160ifconfig inet set eth1 netmask 255.255.255.0ifconfig inet set eth1 gateway 192.168.0.1
  3. controller ipconfig set eth0 ip 192.168.0.160controller ipconfig set eth0 netmask 255.255.255.0controller ipconfig set eth0 gateway 192.168.0.1
  4. platform bmc set ip 192.168.0.160platform bmc set netmask 255.255.255.0platform bmc set gateway 192.168.0.1

Answer(s): D



Which zones accurately describe the zoning requirement for replication connectivity to be established when the source array is in Legacy Port Mode and the target array is in Virtual Port Mode?

  1. Zone 1 = All Source Virtual Port WWNs + All Remote Physical Port WWNsZone 2 = All Source Physical Port WWNs + All Remote Virtual Port WWNs
  2. Zone 1 = All Physical WWNs from both arraysZone 2 = All Virtual WWNs from both arrays
  3. Zone 1 = All Source WWNs + All Remote Virtual Port WWNsZone 2 = All Source WWNs + All Remote Physical Port WWNs
  4. Zone 1 = All Source Virtual Port WWNs + All Remote Port WWNsZone 2 = All Source Physical Port WWNs + All Remote Port WWNs

Answer(s): B



Viewing Page 2 of 20



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