Based on the Array Utilization Dashboard shown in the exhibit, a frontend port is showing higher utilization on Director 1.
How can this situation be corrected?
- A . Add another engine to provide for Frontend Emulation CPUs
- B . Redistribute the workload onto other available ports
- C . Increase cache on the engine
- D . Add additional capacity to support the frontend workload
What is the best practice for FA utilization in a VMAX3 array?
- A . 50% busy with two engines
- B . 50% busy with more than two engines
- C . 50% busy with one engine
- D . 50% busy with two or more engines
What is a key difference between SRDF/Metro and SRDF/S?
- A . SRDF/Metro: R1 devise is host accessible, R2 is red-only
SRDF/S: R1 is host accessible, R2 is write disabled - B . SRDF/Metro: R1 and R2 devices are host accessible at the same time
SRDF/S: R1 devices are host accessible, R2 devices are write disabled - C . SRDF/Metro: R2 can be larger than R1
SRDF/S R2 cannot be larger than R1 - D . SRDF/Metro: Requires a third array for any witness functionality
SRDF/S: Does not require a third array
SRDF/Metro has been deployed.
What is the state and external identity of the R2 devices after initial synchronization has completed?
- A . State: Read/Write
Identity: R1 Identity - B . State: Read/Write
Identity: Original Identity - C . State: Write Disabled
Identity: Original Identity - D . State: Write Disabled
Identity: R1 Identity
A
Explanation:
Reference: https://www.emc.com/collateral/technical-documentation/h14556-vmax3-srdf-metro-overviewand-best-practices-tech-note.pdf?isKoreaPage=false&domainUrlForCanonical=https%3A%2F% 2Fwww.emc.com (page 9)
What is requirement when setting up a Composite Group (CG) for SRDF/Star in an open systems environment?
- A . Composite Group is created with the Star Build CG action
- B . Composite Group is created with the type set to ANY
- C . Recovery group assignments should match the recovery groups defined in the Star Options file
- D . Names assigned to RDF groups match the site names in the Star Options file
What is a Dell EMC recommended best practice when connecting CloudArray to a VMAX3?
- A . Hosts should average at least 2,500 IOPS
- B . Internal SRP should be used
- C . Host I/O limits should be used
- D . Host I/O limits should not be used
SRDF/Metro has been deployed between two data centers. SRDF/Metro is operating normally. Maintenance tasks at the R1 data center require the array to be offline.
Which SRDF operation should be executed on the Metro RDF pairs to facilitate the planned outage without affecting application I/O?
- A . Failover
- B . Split with bias set to R2
- C . Suspend with bias set to R2
- D . Swap
FAST.X needs to be configured on a VMAX3 array to access LUNs on an XtremIO X-Brick. In addition, existing data on the LUNs has to be preserved and made available for host access.
How can this be accomplished?
- A . By externally provisioning the LUNs
- B . By incorporating the LUNs
- C . By zoning the host HBAs to the VMAX3 array FE ports
- D . By zoning the host HBAs to the VMAX3 array DX ports
SRDF/A MSC has been configured between two sites. There are two VMAX3 arrays at the source site and two VMAX3 arrays at the target site. An SRDF/A MSC trip event has occurred.
What happens if the Receive Delta Set on one of the target arrays is incomplete?
- A . Partial Receive Delta Set data is applied
- B . Receive Delta Set data is discarded
- C . Session is marked as Cleanup required
- D . Session is marked as Partitioned
What is an accurate statement about D@RE on a VMAX3 array?
- A . FASTX external storage is not encrypted
- B . System metadata is never encrypted
- C . Existing data can be encrypted in place
- D . Global Memory always encrypted
What is the effective queue depth of a device mapped to a host with eight paths on a VMAX3 array?
- A . 64
- B . 128
- C . 256
- D . 512
Which RDF mode is active during the Non-Disruptive Migration Cutover Ready state?
- A . Asynchronous
- B . Pass-through
- C . Adaptive Copy
- D . Synchronous
B
Explanation:
Reference: https://www.emc.com/collateral/technical-documentation/h15695-vmax-ndm-for-sap-sg.pdf (Page 9)
While analyzing performance of a VMAX3 array, the following details are observed?
High host response time Low FE response time High host CPU utilization
What should be investigated further?
- A . SAN connectivity
- B . Disk delays
- C . I/O queuing on the host
- D . I/O queuing on the frontend
C
Explanation:
Reference: https://thesanguy.com/2012/09/25/san-performance-metrics/
DRAG DROP
What is the correct sequence of steps when the Non-Disruptive Migration create operation is run?
Explanation:
Reference: https://www.google.com/url? sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=2ahUKEwiDxOC-8IfdAhWqioKHcH2DZkQFjABegQIBxAC&url=https%3A%2F%2Fdelltechnologiesworldonline.com%2F2017% 2Fconnect%2FfileDownload%2Fsession%2F80D60E17BDDA3133AED6533292546972%2Fstorage07% 2520VMAX% 2520EnsuringNonDisruptiveMigrationtoVMAXAllFlash_topost.pdf&usg=AOvVaw3UoOzA7rnU9VvZyUcA61 Sm
On a VMAX3 array, under which type of workload will Selective Cache Mirroring provide significant performance optimization?
- A . Large block Write Miss I/Os
- B . Small block Write Hit I/Os
- C . Large block Read Miss I/Os
- D . Large block Read Hit I/Os
A VMAX3 array has been configured to use TimeFinder SnapVX. A snapshot is taken of a LUN that currently resides on a 10k drive.
Which mechanism will SnapVX use when there is a write to a linked target volume?
- A . COFW
- B . ROW
- C . ACORW
- D . COW
Which feature does the embedded eDPM server support on a VMAX3?
- A . eNAS
- B . FAST.X
- C . D@RE
- D . ESRS
C
Explanation:
Reference: https://www.emc.com/collateral/white-papers/h13936-emc-vmax3-data-rest-encryption-wp.pdf
(5)
A company is using a local VMAX3 for production and another VMAX3 on a remote location for disaster recovery purposes that is 5000 kilometers away.
Which SRDF mode supports an RPO of 2 seconds?
- A . SRDF/S
- B . SRDF/A
- C . SRDF.DM
- D . SRDF/A MSC
B
Explanation:
Reference: https://taiwan.emc.com/collateral/technical-documentation/h14556-vmax3-srdf-metro-overviewand-best-practices-tech-note.pdf
An administrator implemented SYMACLs on a VMAX3 using hardware-based Access IDs. The administrator is not able to run SYMCLI commands against the volumes belonging to a host. The volumes were originally provisioned using the host in which the host in which the administrator experienced issues.
What is a possible reason for this issue?
- A . SYMAPI options file was manually modified with the wrong host ID
- B . symacl Cunique Cpassphrasewas run using a different passphrase
- C . Host is not in the eMgmt Access Group
- D . Host network interface card was replaced
Based on the exhibit, which user(s) can enable/disable symauth?
- A . Bob and Frank
- B . Jackie, Jenn, and Jill
- C . Beth
- D . Bob, Frank, and Beth