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Question 1:
How many linked targets, per source, are allowed when using TimeFinder SnapVX?
A. 128
B. 256
C. 512
D. 1024
Correct Answer: D
To access a point-in time-copy, create a link from the snapshot data to a host mapped target device. SnapVX supports up to 1,024 linked targets per source device. Links can be a permanent copy on a target device, or a temporary copy that no longer retains the point-in-time copy of the data once the link is removed. Reference: http://ireland.emc.com/collateral/TechnicalDocument/docu68926.pdf
Question 2:
When creating a TimeFinder SnapVX snapshot, what is the maximum value in days that can be specified for Time-to-Live?
A. 365
B. 400
C. 512
D. Unlimited
Correct Answer: B
Reference: http://ireland.emc.com/collateral/TechnicalDocument/docu68926.pdf (page 18)
Question 3:
What is the recommended maximum distance for an SRDF/S solution?
A. 100 km
B. 125 km
C. 200 km
D. 250 km
Correct Answer: C
Reference: https://community.emc.com/thread/123013?start=0andtstart=0
Question 4:
What are the SRDF group limits of a VMAX3 when connected to other VMAX3s?
A. 64 RDF groups per system64 RDF groups per RDF port16 RDF ports per engine
B. 64 RDF groups per system64 RDF groups per RDF port32 RDF ports per engine
C. 250 RDF groups per system250 RDF groups per RDF port16 RDF ports per engine
D. 250 RDF groups per system250 RDF groups per RDF port32 RDF ports per engine
Correct Answer: C
Reference: https://www.emc.com/collateral/technical-document/h14030-understanding-vmax3-srdf-n-1-device-compatibility-technical-note.pdf (page 4)
Question 5:
What are the SRDF group limits of a VMAX3 when connected to a VMAX?
A. 64 RDF groups per system64 RDF groups per RDF port connected to the VMAX32 RDF ports per engine
B. 250 RDF groups per system64 RDF groups per RDF port connected to the VMAX32 RDF ports per engine
C. 250 RDF groups per system250 RDF groups per RDF port16 RDF ports per engine
D. 250 RDF groups per system250 RDF groups per RDF port32 RDF ports per engine
Correct Answer: D
Question 6:
In a VMAX3 environment, what is used to make SRDF/A resilient to temporary increases in write workloads or intermittent link loss?
A. Storage Resource Pool
B. Delta Set Extension Pool
C. SAV Pool
D. Reserved LUN Pool
Correct Answer: A
Question 7:
You have configured Open Replicator between a new VMAX3 array and an older Symmetrix. A host is connected to the VMAX3 array and a control device is configured to pull data from a remote device. You want the host to be able to
access data on the control device while the data is being pulled from the remote device.
What will cause writes to the control device to be propagated back to the remote device?
A. Donor Update
B. Copy-on-First Access
C. Front-end Zero Detection
D. Background Copy
Correct Answer: A
Reference: https://community.emc.com/thread/177600?start=0andtstart=0
Question 8:
You have configured Open Replicator between a new VMAX3 array and an older Symmetrix. A host is connected to the VMAX3 array and a control device is configured to pull data from a remote device. You want the host to be able to
access data on the control device while a Hot Pull session is active.
How many ports on the VMAX3 array must be zoned to the remote array?
A. 1
B. 2
C. 3
D. 4
Correct Answer: A
Reference:: http://microstare.com/learning/migration/Open Replicator.htm
Question 9:
Which SRDF/A feature takes corrective action to slow host I/O rates to match the SRDF I/O service rates?
A. Write Pacing
B. Write Assist
C. Write-Protect-Bypass
D. Redirect-on-Write
Correct Answer: A
Reference: http://www.emc.com/collateral/TechnicalDocument/docu78897.pdf (page 275 using SRDF/A write pacing)
Question 10:
What can be used to minimize SRDF asynchronous replication from impacting SRDF synchronous replication on the same RF ports?
A. Use the symqos command to enable I/O resource distribution on the affected RF ports
B. Use the symqos command to set a RDF pace value for the SRDF asynchronous volumes
C. SRDF asynchronous and synchronous replication is not supported on the same RF port
D. Enable SRDF coordination for the asynchronous volumes
Correct Answer: A
Reference: http://nikhil-ram.blogspot.com/2013_04_01_archive.html
Question 11:
The Reserved Capacity for a Storage Resource Pool (SRP) on a VMAX3 has been set to 15%. A TimeFinder SnapVX snapshot has been created for a Storage Group containing 10 devices. An application is actively performing read and write
I/Os to these devices. Allocation for the SRP reaches 85%.
What will happen to the snapshot?
A. Snapshot will fail
B. Snapshot deltas will be allocated from the Reserved Capacity
C. Snapshot will persist but new snapshot deltas cannot be created
D. Snapshot will terminate
Correct Answer: A
Reference: http://ireland.emc.com/collateral/TechnicalDocument/docu68926.pdf
Question 12:
A Storage Group containing the source volumes on a VMAX3 array is managed by the Gold SLO. A TimeFinder SnapVX snapshot of this Storage Group is linked to the target volumes. The Storage Group containing the target volumes is
managed by the Bronze SLO.
Which SLO will be used to manage the snapshot deltas?
A. Optimized
B. Gold
C. Bronze
D. None
Correct Answer: A
Reference: http://www.emc.com/collateral/white-papers/h14273-vmax3-timefinder-snapvx-microsoft-sql-server.pdf (page 8)
Question 13:
A VMAX3 array has been configured with two Storage Resource Pools (SRP). Source volumes are assigned to SRP_1 and target volumes are assigned to SRP_2. A TimeFinder SnapVX snapshot of the source volumes is linked to the target
volumes in the default mode.
What will happen when there are new host writes to the source volumes?
A. Snapshot deltas will be stored in SRP_1
B. Snapshot deltas will be stored in SRP_2
C. Snapshot deltas will be stored in the Reserved Capacity of SRP_1
D. Snapshot deltas will be stored in the Reserved Capacity of SRP_2
Correct Answer: B
Reference: http://www.emc.com/collateral/white-papers/h14273-vmax3-timefinder-snapvx-microsoft-sql-server.pdf
Question 14:
A storage administrator wants to continue using a TimeFinder SnapVX target from a host after the corresponding snapshot has been terminated. Which action will allow continued access to target data?
A. Link with Copy mode
B. Link with NoCopy mode
C. Relink with NoCopy mode D. Restore the linked target to the production volume
Correct Answer: A
Question 15:
What is a consideration when linking a TimeFinder SnapVX snapshot to a target Storage Group (SG) in Unisphere for VMAX?
A. Target SG should not be in a Masking View
B. Target SG should be in a Masking View
C. Target SG should not be managed by the Optimized SLO
D. Target SG should be managed by the Optimized SLO
Correct Answer: B
The target storage groups contain the linked-target devices of Production\’s snapshots. They should be added to a masking view to make the target devices accessible to the mount host. Reference: http://www.emc.com/collateral/white-papers/h14273-vmax3-timefinder-snapvx-microsoft-sql-server.pdf
