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Total 75 questions
What is the starting point for a new SRDF/Metro deployment?
- A. Empty RDF group and Staging RDF group between two VMAX3 arrays SRDF pairs in a Staging group in a Suspended state
- B. RDF group between two VMAX3 arrays SRDF pairs in an Active mode and a Suspended state
- C. RDF group between two VMAX3 arrays SRDF pairs in a Suspended state
- D. Empty RDF group between two VMAX3 arrays Non-SRDF devices on both arrays
Answer : D
When utilizing storage on a VMAX3, what should be created for each application/server to assist in proper performance analysis over time?
- A. Gaussian graphs
- B. Trendline graphs
- C. Stacked graphs
- D. Baseline graphs
Answer : C
A company is evaluating the deployment of SRDF/Star on VMAX3 arrays. One of the concerns is that the SRDF daemon represents a single point of failure.
How could this concern be addressed?
- A. RDF daemon process runs on the embedded Tools Virtual Machines and has built-in high availability.
- B. Run RDF daemons on multiple management stations at the workload site. RDF daemons will cooperate with each other.
- C. Run an RDF daemon on one management station at each of the three sites. If the workload site RDF daemon fails, one of the RDF daemons from the other two sites will take over.
- D. RDF daemon process runs on the VMAX3 array. If the workload site RDF daemon fails, the RDF daemon from one of the other sites will take over.
Answer : D
On a VMAX3 array, when will the backend director give equal priority to read miss and destage operations?
- A. At 5% of the System Write Pending Limit
- B. At 50% of the System Write Pending Limit
- C. At 75% of the configured cache in the array
- D. At 75% of the SRDF/A cache usage
Answer : B
SRDF/Metro has been deployed in a non-Witness configuration. Each data center has one VMAX3 array. What is the SRDF pair state under normal operating conditions?
- A. Consistent
- B. Synchronized
- C. ActiveActive
- D. ActiveBias
Answer : A
What is in accurate statement about Unisphere for VMAX and Solutions Enabler permission management?
- A. Authorization checking is disabled by default for Unisphere and Solutions Enabler and must be enabled before configuring permissions
- B. Solutions Enabler can assign up to four roles per user and Unisphere can only assign up to two roles per user
- C. Unisphere and Solutions Enabler permission information is maintained in separate symauth databases
- D. Unisphere has a more explicit authentication mechanism for users while Solutions Enabler uses the operating system user credentials
Answer : C
Refer to the exhibit.
Which failure scenario requires a reconfiguration of this Concurrent SRDF/Star configuration?
- A. Link failure between Sites A and C
- B. Link failure between Sited A and B
- C. Site A failure
- D. Site B failure
Answer : D
By default, how many days of the data are retained if Unisphere for VMAX is configured with a Root Cause Analysis Interval of 10 minutes?
- A. 15
- B. 30
- C. 45
- D. 60
Answer : B
An existing single engine VMAX3 with two FC ports configured for remote replication will be adding FAST.X to a CloudArray. Currently the array is configured with
32 FC ports which are all in use.
Which steps are required to support a minimum connectivity to the CloudArray?
- A. Identify a port on each director to be used for the DX emulation Remove replication from any devices on the selected ports Delete any volumes presented to those ports
- B. Identify two ports on each director to be used for the DX emulation. Stop all remote replication Delete any volumes presented to those ports.
- C. Identify two ports on a single director to be used for the DX emulation Remove any masking entries related to the director ports
- D. Identify two ports on each director to be used for the DX emulation Remove any masking entries to the director ports.
Answer : B
Performance analysis on VMAX3 FE ports have shown that a large number of QFULL responses were returned to their best performing hosts. However, other hosts suffered from high response times.
What needs to be configured in order to lower the high response times?
- A. Decrease the queue depth of the poor performing hosts
- B. Increase the queue depth for all hosts
- C. Set similar queue depths for all hosts
- D. Increase the queue depth of the best performing hosts
Answer : A
Reference:
https://thesanguy.com/2012/09/25/san-performance-metrics/
Which parameter values will result in a Static Cache Partition in a VMAX All Flash array?
- A. Min=30%, Target=30%, Max=30%
- B. Min=30%, Target=30%, Max=80%
- C. Min=30%, Target=60%, Max=60%
- D. Min=30%, Target=60%, Max=80%
Answer : C
Alerts are required to track high I/O response times for a specific storage group. I/O response times greater than 15 ms require next day analysis. I/O response times greater than 20 ms require immediate intervention.
Which alert settings are required?
- A. 1 st level "" Informational, 15 ms, e-mail nd level "" Warning, 20 ms, Syslog
- B. 1 st level "" Warning, 15 ms, syslog nd level "" Critical, 20 ms, SNMP trap
- C. 1st level "" Warning, 14 ms, SNMP trap 2nd level "" Critical, 19 ms, SNMP trap
- D. 1 st level "" Warning, 16 ms, e-mail nd level "" Critical, 21 ms, Syslog
Answer : A
If an XtremIO external tier is placed in its own Storage Resource Pool, which SLO is associated with the external tier?
- A. Platinum
- B. Silver
- C. Gold
- D. Optimized
Answer : D
Which special considerations are required for non-ALUA arrays and FAST.X?
- A. Non-ALUA Controllers are not supported
- B. Remote Controllers can only be connected to a single port on the VMAX3 array
- C. Remote Controllers must be zoned to ports on different directors
- D. Remote Controllers must be zoned to ports on a single director
Answer : B
Reference:
https://czech.emc.com/collateral/technical-documentation/h14568-fast.x-design-bestpractices-tech-note.pdf
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