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Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 139 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C02
Question #: 139
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C02 Questions]

A solutions architect must design a solution for a persistent database that is being migrated from on-premises to AWS. The database requires 64,000 IOPS according to the database administrator. If possible, the database administrator wants to use a single Amazon Elastic Block Store (Amazon EBS) volume to host the database instance.
Which solution effectively meets the database administrator's criteria?

  • A. Use an instance from the I3 I/O optimized family and leverage local ephemeral storage to achieve the IOPS requirement.
  • B. Create a Nitro-based Amazon EC2 instance with an Amazon Elastic Block Store (Amazon EBS) Provisioned IOPS SSD (io1) volume attached. Configure the volume to have 64,000 IOPS.
  • C. Create and map an Amazon Elastic File System (Amazon EFS) volume to the database instance and use the volume to achieve the required IOPS for the database.
  • D. Provision two volumes and assign 32,000 IOPS to each. Create a logical volume at the operating system level that aggregates both volumes to achieve the IOPS requirements.
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Suggested Answer: B 🗳️
by josebormo at Aug. 10, 2020, 3:47 p.m.
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josebormo
Highly Voted 3 years, 9 months ago
I go with B, io1 the only one able to support 64000 IOPS https://dochttps://www.examtopics.com/exams/amazon/aws-certified-solutions-architect-associate-saa-c02/view/35/#s.aws.amazon.com/es_es/AWSEC2/latest/UserGuide/ebs-volume-types.html
upvoted 40 times
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Paitan
Highly Voted 3 years, 9 months ago
EBS Provisioned IOPS SSD can go upto 64,000 IOPS. Nitro based EC2 will also enhance performance. So I will go with option B.
upvoted 20 times
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slcheng
Most Recent 2 years, 11 months ago
Selected Answer: B
Nitro is require for large IOPS.
upvoted 1 times
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shirokame
3 years, 4 months ago
Why A is wrong?
upvoted 1 times
future77
3 years, 1 month ago
Ephemeral storage is the volatile temporary storage attached to your instances which is only present during the running lifetime of the instance. In the case that the instance is stopped or terminated or underlying hardware faces an issue, any data stored on ephemeral storage would be lost. Storage should be persistent not ephemeral, right.
upvoted 4 times
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sayed
3 years, 5 months ago
Selected Answer: B
B IO1/IO2 = 32000 IOPS IO1/IO2 + Nitro = 64000 IOPS
upvoted 2 times
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LETSGETIT
3 years, 5 months ago
B: B: Provisioned IOPS SSD volumes can range in size from 4 GiB to 16 TiB and you can provision from 100 IOPS up to 64,000 IOPS per volume. You can achieve up to 64,000 IOPS only on Instances built on the Nitro System. On other instance families you can achieve performance up to 32,000 IOPS. https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-volume-types.html
upvoted 4 times
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Ankush_sh
3 years, 7 months ago
Main Point to keep in mind for other questions as well:- io1 can go up to its max IOPS limit (i.e. 64000) only if instances are Nitro based, otherwise its max IOPS is 32000 only.
upvoted 4 times
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gargaditya
3 years, 7 months ago
Its B-Nitro instance with io1 A-ephemeral->temporary Q requirement is peristent! C-EFS is not needed as it is a single instance+mentioned that preferable to host as single EBS volume D-does not fit as requirement is 'single EBS volume'
upvoted 1 times
gargaditya
3 years, 7 months ago
For anyone wanting to consolidate EBS key points, Summary: st1/sc1 are -HDD -cannot be used as ROOT/boot volumes -125 GB to 16 TB storage -max iops 250(sc1) or 500(st1) gp2/gp3 are -SSD -1 GB to 16 TB storage -can be used as root volume -used for upto 16k IOPS(gp3 has baseline of 3k IOPS) -gp3 has option to scale throughput or IOPS independent of storage -SINGLE DIGIT millisecond latencies(upto 10 ms)
upvoted 1 times
gargaditya
3 years, 7 months ago
io1/io2 are -SSD -4 GB to 16TB -can be used as root volume -used for upto 32k IOPS or 64K IOPS(nitro feature) -good for Database instance volumes -has option to scale throughput or IOPS independent of storage -SUPPORT EBS MULTI ATTACH -1 ms latency io2 Block express is -SSD -4GB to 64 TB storage -can be used as root volume -used for offering over 64k IOPS -has option to scale throughput or IOPS independent of storage -SUPPORT EBS MULTI ATTACH -SUB-Millisecond latency Instance store aka 'phemeral' -both HDD and SSD options -aim is temporary storage or -very high(1 million IOPS)
upvoted 3 times
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woke
3 years, 8 months ago
B. Create an Nitro-based Amazon EC2 instance with an Amazon EBS Provisioned IOPS SSD (io1) volume attached. Configure the volume to have 64,000 IOPS.
upvoted 4 times
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Toks2021
3 years, 8 months ago
B https://aws.amazon.com/ebs/features/
upvoted 3 times
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syu31svc
3 years, 8 months ago
https://aws.amazon.com/ebs/features/: "Provisioned IOPS SSD volumes are designed to deliver a maximum of 64,000 IOPS and 1,000 MB/s of throughput per volume1" Answer is B
upvoted 2 times
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KK_uniq
3 years, 8 months ago
B is correct
upvoted 2 times
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mryala
3 years, 8 months ago
it's B
upvoted 1 times
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Ankitrathi85
3 years, 8 months ago
B right
upvoted 1 times
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AEN
3 years, 8 months ago
Ans is B
upvoted 2 times
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myutran
3 years, 8 months ago
Answer: B
upvoted 1 times
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b34
3 years, 8 months ago
Is D even possible lets say if the IOPS required is more than 64000 like & 128000 Will it work by adding multing EBS volumes with 64000 IOPS
upvoted 1 times
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