Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Dell SPEED Guru Exams > SPEED VxRail Exam > Flashcards

SPEED VxRail Exam Flashcards

1
Q

You have been asked to size a VxRail system to support 200 VMs, but have not been provided any information about the expected workload. What is the recommended course of action?

A

Work with the customer to define and document a set of reference workload profiles to model the new system.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

A customer is planning to deploy a small 3 node VxRail cluster that will be mostly used for recording 24H High-Definition CCTV footage across all stores in the US. What type of deployment would be the most recommended for that type of workload?

A

3 x VxRail E660F with 2 Disk Groups with SAS Write Intensive as cache

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What performance information is available from the native vSAN Performance Monitor?

A

Historical and real-time information at the cluster, host, and VM levels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What needs to be enabled to look for the past performance metrics in a vSAN cluster?

A

vSAN Performance Service

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What should we expect from a performance standpoint when mixing All NVMe with All Flash hosts?

A

performance will be heterogenous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the minimum number of All Flash nodes that are needed to be able to use a RAID5 Storage Policy with vSAN OSA (Original Storage Architecture)?

A

4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

After selecting Cluster, then Configure from the vSphere Client GUI, what section can then be used to enable Performance Service?

A

vSAN, Services

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

For data collected by the vSAN Performance Service, the display window of time is limited to a maximum time of how long?

A

24 Hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the key features in vSAN ESA? (Select 3)

A

All-NVMe storage pool simplifies storage device management for performance and workload balance while significantly cutting down performance impact of an individual failed storage device.

The maximum write buffer size for each Disk Group has been increased from 600 GB to 1.6 TB, which improves write throughput up to 2x versus vSAN OSA.

The new Log Structured File System allows for faster ingestion of VM data to eliminate trade-off of performance for space efficiency and security when compression and encryption data services are enabled.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the maximum number of Disk Groups per host for a fully populated S670 hybrid cluster?

A

4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which of the following cache drive types will provide the lowest latency for the workloads?

A

NVMe cache drive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which of the following vSAN Storage Policies are expected to provide longest resyncs with vSAN OSA?

A

RAID 6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A VM configured with a Storage Policy of RAID1 FTT1, generates on average 1000 write IOPS and 2000 read IOPS. On the backend this translates to:

A

(2000 write IOPS & 2000 read IOPS)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the size of the read buffer for an All Flash VxRail system using vSAN 7.0?

A

up to 600GB per disk group

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The “Compression only” space efficiency setting first became available at what release of vSAN?

A

vSAN 7.0U1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Does vSAN ESA provide better performance for compression compared to vSAN OSA?

A

Yes, with vSAN ESA, data is immediately compressed. This avoids the IO amplification penalties experienced by compressing and decompressing data (when processing between cache and capacity layers in vSAN OSA

17
Q

Which statement best describes the use of filters in the VxRail Sizing Tool?

A

Filters help optimize the configuration and better delineate the differences in price, performance, and footprint.

18
Q

What are the key benefits of 15G over 14G?

A

Increased processor core count and capabilities. Additional memory channels, 8 vs 6, and larger memory DIMM sizes.

19
Q

An admin needs to deploy a mission critical VM that will host an Oracle Database and will require the highest levels of storage performance. Which storage policy would be the most recommended with vSAN OSA?

A

RAID 0

20
Q

Which statement accurately describes the relationship between storage components for vSAN OSA?

A

A disk group consists of one capacity drive and one cache drive, with each node having up to 5 disk groups.

The storage capacity is presented back to that node where each node in the cluster has its own vSAN datastore.

21
Q

Which two (2) of the following statements are true for the initial release of vSAN ESA with VxRail 8.0.000?

A

Only models E660N and P670N with either the 3.2TB or 6.4TB mixed-use TLC NVMe drives are supported.

Minimum of dual 16-core Intel processors, 512GB of memory & 6 NVMe drives per node are supported.

22
Q

How do the shared NIC ports on a VxRail node handle traffic into and out of the nodes that make up a cluster?

A

(The workload for all traffic types is dynamically load-balanced across the ports to ensure optimum throughput)

23
Q

What is the size of the write buffer for an All Flash VxRail system using vSAN 7.0?

A

up to 600GB

24
Q

Which two statements are correct concerning memory sizing for a VxRail environment?

A

Oversizing memory can make the price of the VxRail system non-competitive.

If a system is sized with too little memory for the workload, ESXi will eventually swap to disk and the system will likely experience performance issues.

25
Q

After selecting Cluster, then Monitor from the vSphere Client GUI, what section can then be used to produce a chart displaying Write Buffer Free Percentage?

A

Performance, Advanced

26
Q

Which three (3) events are a likely explanation for a sudden increase in response time and reduction in IOPS?

A

Activity on the network has reached the saturation point

A capacity drive has failed and a rebuild is in progress

System is reaching the maximum number of IOPS that it can support

27
Q

When designing/sizing a VxRail system, what are the most important considerations?

A

(Amount of memory and number of CPU cores needed for each node)

28
Q

What documentation is needed to install and configure a VxRail system?

A

(The system includes online documentation that is accessed directly from VxRail Manager)

29
Q

What is the minimum number of All Flash nodes that are needed to be able to use a RAID6 Storage Policy with vSAN OSA?

A

6

30
Q

What is the advantage of enabling vSAN over RDMA?

A

(Better overall performance and CPU saving)

Dell SPEED Guru Exams (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions