Machine types and families (E2, N2, C2) in GCP - Step-by-Step Execution

Process Flow - Machine types and families (E2, N2, C2)

Choose Machine Family

↓

E2: Cost-effective, general use

↓

N2: Balanced performance

↓

C2: Compute optimized

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Select Machine Type

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Deploy VM Instance

Start by choosing a machine family based on needs, then select a machine type within that family, and finally deploy the VM instance.

Execution Sample

GCP

gcloud compute instances create my-vm \
  --machine-type=e2-medium \
  --zone=us-central1-a

This command creates a VM instance using the E2 machine family with a medium size in a specific zone.

Process Table

Step	Action	Machine Family	Machine Type	Result
1	Choose machine family	E2		Selected E2 for cost-effective general use
2	Select machine type	E2	e2-medium	Medium size chosen with 2 vCPUs and 4 GB RAM
3	Deploy VM	E2	e2-medium	VM instance created in us-central1-a zone
4	End			Deployment complete

💡 VM instance deployed successfully with chosen machine family and type

Status Tracker

Variable	Start	After Step 1	After Step 2	Final
machine_family	none	E2	E2	E2
machine_type	none	none	e2-medium	e2-medium
vm_status	not created	not created	created	created

Key Moments - 2 Insights

Why do we pick a machine family before the machine type?

Because the machine family defines the overall characteristics like cost and performance, and machine types are specific sizes within that family. See execution_table rows 1 and 2.

What happens if you choose a machine type not in the selected family?

The deployment will fail because machine types must belong to the chosen family. This is why step 2 selects a type within the family.

Visual Quiz - 3 Questions

Look at the execution table, what machine family is selected at step 1?

A C2

B N2

C E2

D e2-medium

💡 Hint

Check the 'Machine Family' column in row 1 of the execution_table.

At which step is the VM instance created?

A Step 3

B Step 2

C Step 1

D Step 4

💡 Hint

Look at the 'Result' column for the step where VM status changes to created.

If you change the machine family to N2, what must you also change?

A The zone

B The machine type to one in N2 family

C The VM name

D Nothing else

💡 Hint

Refer to key_moments about matching machine type to family.

Concept Snapshot

Machine families group VM types by purpose:
- E2: cost-effective, general use
- N2: balanced performance
- C2: compute optimized
Choose family first, then pick machine type (size).
Deploy VM with chosen type in a zone.

Full Transcript

This lesson shows how to select a machine family and type in Google Cloud Platform. First, you pick a family like E2 for cost savings or C2 for compute power. Then, you choose a machine type within that family, such as e2-medium. Finally, you deploy the VM instance with these settings. The execution table traces these steps, showing the family and type chosen and the VM creation. Key points include matching machine types to families and understanding the purpose of each family. The quiz tests your understanding of these steps and choices.

Practice

1. Which Google Cloud machine family is best suited for cost-effective general use workloads?

easy

A. E2 family

B. N2 family

C. C2 family

D. M1 family

Solution

1. Step 1: Understand the purpose of each machine family

   The E2 family is designed for cost-effective general use, N2 balances power and memory, and C2 is optimized for CPU-heavy tasks.

2. Step 2: Match the workload type to the machine family

   Since the question asks for cost-effective general use, E2 is the best fit.

3. Final Answer:

   E2 family -> Option A

4. Quick Check:

   Cost-effective general use = E2 [OK]

Hint: E2 means economical general use machines [OK]

Common Mistakes:

• Confusing C2 as cost-effective instead of CPU-optimized
• Choosing N2 for cost savings instead of balance
• Selecting a non-existent machine family like M1

2. Which of the following is the correct way to specify a C2 machine type in a Google Cloud VM instance configuration?

easy

A. machineType: 'zones/us-central1-a/machineTypes/m1-standard-4'

B. machineType: 'zones/us-central1-a/machineTypes/e2-standard-4'

C. machineType: 'zones/us-central1-a/machineTypes/n2-standard-4'

D. machineType: 'zones/us-central1-a/machineTypes/c2-standard-4'

Solution

1. Step 1: Identify the correct machine family prefix for C2

   C2 machine types start with 'c2-', so the machine type string must include 'c2-standard-4'.

2. Step 2: Verify the full machineType format

   The format is 'zones/{zone}/machineTypes/{machineType}', so 'zones/us-central1-a/machineTypes/c2-standard-4' is correct.

3. Final Answer:

   machineType: 'zones/us-central1-a/machineTypes/c2-standard-4' -> Option D

4. Quick Check:

   C2 machine type string includes 'c2-' prefix [OK]

Hint: C2 machine types start with 'c2-' in the path [OK]

Common Mistakes:

• Using 'e2-' or 'n2-' prefix for C2 machines
• Incorrect zone or path format
• Using a non-existent machine family like 'm1-'

3. You launch a VM with machine type n2-standard-8. Which statement best describes this VM's characteristics?

medium

A. It is optimized for CPU-heavy workloads with 8 vCPUs.

B. It balances CPU and memory with 8 vCPUs and moderate RAM.

C. It is a cost-effective VM with limited CPU power.

D. It is a high-memory VM with 8 vCPUs and extra RAM.

Solution

1. Step 1: Understand the N2 machine family purpose

   N2 machines balance CPU power and memory, suitable for general workloads needing moderate resources.

2. Step 2: Analyze the machine type suffix

   'standard-8' means 8 virtual CPUs with balanced memory, not specialized for CPU-only or high-memory.

3. Final Answer:

   It balances CPU and memory with 8 vCPUs and moderate RAM. -> Option B

4. Quick Check:

   N2 = balanced CPU and memory [OK]

Hint: N2 means balanced CPU and memory machines [OK]

Common Mistakes:

• Confusing N2 with C2 which is CPU-optimized
• Thinking N2 is cost-effective like E2
• Assuming N2 is high-memory only

4. A user tries to create a VM with machine type c2-standard-16 but gets an error. Which is the most likely cause?

medium

A. The zone does not support C2 machine types with 16 vCPUs.

B. The machine type name is misspelled; it should be c2-standrd-16.

C. C2 machines cannot have more than 8 vCPUs.

D. The user must specify the machine type without the zone prefix.

Solution

1. Step 1: Check machine type naming and limits

   'c2-standard-16' is a valid machine type with 16 vCPUs; spelling is correct and allowed size.

2. Step 2: Consider zone availability

   Some zones do not support all machine types or sizes, so the error likely comes from zone limitations.

3. Final Answer:

   The zone does not support C2 machine types with 16 vCPUs. -> Option A

4. Quick Check:

   Zone support limits cause machine type errors [OK]

Hint: Check zone supports machine type size before creating VM [OK]

Common Mistakes:

• Assuming spelling error when name is correct
• Believing C2 max vCPUs is 8 (it's higher)
• Ignoring zone prefix requirement in machineType

5. You need to run a CPU-intensive data processing job that requires maximum CPU power but moderate memory. Which machine type should you choose to optimize performance and cost?

hard

A. e2-standard-16

B. n2-highmem-16

C. c2-standard-16

D. e2-highcpu-16

Solution

1. Step 1: Identify workload requirements

   The job is CPU-intensive needing maximum CPU power with moderate memory.

2. Step 2: Match machine family to workload

   C2 family is optimized for CPU-heavy workloads, while E2 is cost-effective general use and N2-highmem is for memory-heavy tasks.

3. Step 3: Choose the best machine type

   Among options, 'c2-standard-16' provides high CPU power with balanced memory, fitting the requirement best.

4. Final Answer:

   c2-standard-16 -> Option C

5. Quick Check:

   CPU-heavy job = C2 machines [OK]

Hint: Use C2 for CPU-heavy jobs, not E2 or N2-highmem [OK]

Common Mistakes:

• Choosing E2 for CPU-heavy instead of cost-effective use
• Picking N2-highmem which wastes cost on extra memory
• Selecting E2-highcpu which is less powerful than C2