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Exam AZ-300 topic 1 question 60 discussion

Actual exam question from Microsoft's AZ-300
Question #: 60
Topic #: 1
[All AZ-300 Questions]

SIMULATION -
Click to expand each objective. To connect to the Azure portal, type https://portal.azure.com in the browser address bar.






When you are finished performing all the tasks, click the "˜Next' button.
Note that you cannot return to the lab once you click the "˜Next' button. Scoring occur in the background while you complete the rest of the exam.

Overview -
The following section of the exam is a lab. In this section, you will perform a set of tasks in a live environment. While most functionality will be available to you as it would be in a live environment, some functionality (e.g., copy and paste, ability to navigate to external websites) will not be possible by design.
Scoring is based on the outcome of performing the tasks stated in the lab. In other words, it doesn't matter how you accomplish the task, if you successfully perform it, you will earn credit for that task.
Labs are not timed separately, and this exam may have more than one lab that you must complete. You can use as much time as you would like to complete each lab. But, you should manage your time appropriately to ensure that you are able to complete the lab(s) and all other sections of the exam in the time provided.
Please note that once you submit your work by clicking the Next button within a lab, you will NOT be able to return to the lab.

To start the lab -
You may start the lab by clicking the Next button.
You need to deploy an Azure virtual machine named VM1004a based on an Ubuntu Server image, and then to configure VM1004a to meet the following requirements:
- The virtual machines must contain data disks that can store at least 15 TB of data
- The data disk must be able to provide at least 2,000 IOPS
- Storage costs must be minimized
What should you do from the Azure portal?

Show Suggested Answer Hide Answer
Suggested Answer: See solution below.
Step 1: Open the Azure portal.
Step 2: On the left menu, select All resources. You can sort the resources by Type to easily find your images.
Step 3: Select the image you want to use from the list. The image Overview page opens.
Step 4: Select Create VM from the menu.
Step 5: Enter the virtual machine information. Select VM1004a as the name for the first Virtual machine.The user name and password entered here will be used to log in to the virtual machine. When complete, select OK. You can create the new VM in an existing resource group, or choose Create new to create a new resource group to store the VM.
Step 6: Select a size for the VM. To see more sizes, select View all or change the Supported disk type filter.To support 15 TB of data you would need a Premium disk.
Step 7: Under Settings, make changes as necessary and select OK.
Step 8: On the summary page, you should see your image name listed as a Private image. Select Ok to start the virtual machine deployment.
References:
https://docs.microsoft.com/en-us/azure/virtual-machines/windows/create-vm-generalized-managed
by mm2 at Oct. 25, 2019, 7:45 a.m.

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cloudnoob19
Highly Voted 5 years, 9 months ago
"The data disk must be able to provide at least 2,000 IOPS" - Standard HDD (S70) has max IOPS of 2000. Standard SSD (E70) should be chosen
upvoted 23 times
MaheshBeeravelli
5 years, 8 months ago
Yes Stadard SSD must be chosen for IOPS and reduce cost as all types support disk size 32,767 GiB so there won't be a problem with 15TB. https://docs.microsoft.com/en-us/azure/virtual-machines/windows/disks-types
upvoted 5 times
[Removed]
5 years, 8 months ago
I guess, Standard HDD should be selected instead of SSD. As mahesh mentioned 32767 is supported by standard HDD S80. It has a max of 2000 IOPS
upvoted 2 times
MarcoZ
5 years, 8 months ago
you mean S70 Standard HDD, it supports up to 16TB
upvoted 6 times
nabylion
5 years ago
don't think it's good to run all time disk iops with its max performance( 2k IOPS). so ssd is better.
upvoted 4 times
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SilentH
Highly Voted 5 years, 5 months ago
1. Create a VM with Ubuntu image 2. For the O/S disk, use a Standard HDD (minimizing costs) 3. For the data disk, use a Standard SSD and size of 16384 GiB (E70) as you must provide "at least 2,000 IOPS" and 15TB data. Note: The Standard HDD provides a max of 2,000 IOPS which doesn't meet the "at least" requirement. Expand Advanced and ensure that "Use managed disks" is enabled (should this be disabled to meet minimize costs requirement?)
upvoted 13 times
NKnab
5 years, 1 month ago
Managed disk is cheaper as per azure
upvoted 1 times
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rs_s
Most Recent 4 years, 10 months ago
can someone confirm if the given answer is correct please? or is there a different answer?
upvoted 1 times
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nexus2020
4 years, 10 months ago
1TB = 1024 GB, so 15TB = 15 * 1024 GB = 15360 GB
upvoted 1 times
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uhclstud
5 years ago
What would be right size ?
upvoted 1 times
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Harvard
5 years ago
Hello guys, does the VM size you select in the first tab affect this? or is it strictly dependent on the disk size?
upvoted 1 times
ercank
5 years ago
Yes it has affect on the overall perfor,ance of the disks as well. Below you can find a Q&A section that is related with this: "What are the recommended VM sizes for larger disk sizes (>4 TiB) for Standard SSD and Standard HDD disks to achieve optimized disk IOPS and Bandwidth? To achieve the disk throughput of Standard SSD and Standard HDD large disk sizes (>4 TiB) beyond 500 IOPS and 60 MiB/s, we recommend you deploy a new VM from one of the following VM sizes to optimize your performance: B-series, DSv2-series, Dsv3-Series, ESv3-Series, Fs-series, Fsv2-series, M-series, GS-series, NCv2-series, NCv3-series, or Ls-series VMs. Attaching large disks to existing VMs or VMs that are not using the recommended sizes above may experience lower performance." Also VM size menu gives you the max IOPS so in my opinion both VM size and Disk size has to meet the IOPS requirement.
upvoted 1 times
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ArulLivingston
5 years, 2 months ago
Standard HDD supports upto 2000 IOPS https://docs.microsoft.com/en-us/azure/virtual-machines/windows/disks-types
upvoted 2 times
macco455
4 years, 11 months ago
and this questions wants to have 2000 as a minimum but realistically it wants more so Standard HDD is no the option. E70 is the correct disk option
upvoted 1 times
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kondapaturi
5 years, 2 months ago
Question is only create VM not specific environments. Standard HDD S70 = US$655.36 Standard SDD E70 = US$1,228.80 as per cost S70 disk is right.
upvoted 4 times
vladex
5 years ago
-> The data disks must be able to provide at least 2.000 IOPS "at least" E70 is correct
upvoted 2 times
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mohamadakl
5 years, 2 months ago
To Minimize the cost Standard HDD : Max IOPS 2,000 https://docs.microsoft.com/en-us/azure/virtual-machines/windows/disks-types
upvoted 2 times
PatMan
5 years, 2 months ago
Did you not read the question ? It says "at least 2,000 IOPS" which is the absolute maximum throughput for standard HDD's. You have to use standard SSD's if you want to "at least" or "minimum" get 2,000 IOPS
upvoted 3 times
jadi11
5 years, 1 month ago
But one can use 2xS60 in striping configuration. The size of Data volume/disk would be 16T and the number of iops shoud be 2x1300.
upvoted 1 times
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huyhoang8344
5 years, 3 months ago
Standard SSD E70 should be the right choice
upvoted 1 times
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TYT
5 years, 3 months ago
Go to the VM, Disks, Add a new disk: We have to select Standard because of costs - Now: Standard SSD v Standard HDD Both are cost efficient. The closest options are SSD: E70 ( 4000 IOPS, 16384 GiB close to 15TB), HDD (Max IOPS: 2000, 16384 GiB close to 15TB). Two things to note: HDD is preferred for Dev/Test although it doesn't say in the question. SSD is preferred to provide consistent performance at lower costs. The Q says At least 2000 IOPS - so if you select HDD, you need to go for S80 because of IOPS which might actually increase the costs, plus you are paying for twice of 15 TB for nothing. IOPS will be ATMOST 2000 - not ideal. The best and close option would be to select SSD - Standard - E70. IMO.
upvoted 6 times
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satgo
5 years, 3 months ago
Disk size in GiB. So need to convert to TB. 1 TB = 931.32257461548 GiB, 15 TB = 13969.838619232 GiB.
upvoted 1 times
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LoveAZ
5 years, 4 months ago
for the VM Size, Can I Use "Standard A1 v2" since it is the cheapest ?
upvoted 1 times
manhattan
5 years, 4 months ago
You should use a disk with at least 2000iops, so the answer is NO, Standard E70 should be the right answer, 16Gb space, 4000IOPS
upvoted 2 times
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Mher
5 years, 5 months ago
Standard SSD sizes E70 Up to 4,000 iops- dated 11/04/2019
upvoted 1 times
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FailureIsnotAnOption
5 years, 5 months ago
They want a "data" disk of 15TB, not an OS disk. Why can't you choose your VM image and add "Data disks" on the disks tab). I think this is correct. On Disks tab click on Create and attach a new disk, name your new data disk, assign the size by clicking "change size" and choose an account type of Standard HDD to minimize cost, 16384 GiB as the size with Max IOPS of 2000.
upvoted 11 times
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VRD13
5 years, 6 months ago
Price of E70 - $1,228.80 Price of P70 - $1,638.40 So E70 drive if it have to be single! Another solution could be Storage Pool using 2x S60 drives, what will costs you only 2x $262.14 = $524.28 and give up to 2600 iops (in pool) since each disk will do 1300 iops.
upvoted 1 times
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Ekramy_Elnaggar
5 years, 7 months ago
Update: numbers changed , so we have the following new limits : Standard HDD: Up to [ 32K GiB , 500 MiB/s , 2K IOPS ] Standard SSD: Up to [ 32K GiB , 750 MiB/s , 6K IOPS ] Premium SSD: Up to [ 32K GiB , 900 MiB/s , 20K IOPS ] Ultra Disk: Up to [ 65K GiB , 2K MiB/s , 160K IOPS ] Ref: https://docs.microsoft.com/en-us/azure/virtual-machines/windows/disks-types
upvoted 8 times
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