CDL - Migration Services

Question 1

What are GCPs DB migration Services?

Answer 1

DB Migration Service (DMS) - When you are migrating open-source, relational DBs.

BigQuery Data Transfer Service - Used to automate scheduled data movement into BQ using a fully managed data import service.

Question 2

What are GCPs 2 Compute Engine migration services?

Answer 2

Migrate for Compute Engine - When you are migrating VMs/servicers from on-prem to another cloud Compute Engine. (Exam)

Migrate for Anthos - When you are migrating containers – VMs – from on-prem OR other clouds directly into containers in GKE.

Question 3

What are GCPs 2 data/storage migration services?

Answer 3

1. Cloud Storage Transfer Service (Exam) - Used to migrate storage data between cloud services (think AWS S3 and Cloud Storage)
2. Transfer Appliance - When you have massive amounts of data (TBs) and its faster to ship physical devices.

Question 4

What are the 3 types of migration options from on-prem into GCP?

Answer 4

1. Lift and shift
2. Improve and move
3. Rip and Replace

Question 5

What type of on-prem migration is the most labor intensive?

Answer 5

Rip & Replace

Question 6

Define Lift and Shift. What are its benefits? Cons?

Answer 6

The moving of workloads from one environment to another with minor or zero modifications/refactoring.

Pros - least labor intensive (no upskilling needed) and fasted .

Cons - limited cloud benefits

Question 7

Define Improve and Move.

Answer 7

Is the modernizing of a workload WHILE migrating to the cloud to take advantage of cloud-native capabilities.

Question 8

Define Rip and Replace. What are its benefits? Cons?

Answer 8

Is the decommissioning of applications and completely redesigning and rewriting them as a cloud-native app.

Benefits - Can maximize value of cloud offerings.

Cons - most labor intensive and take the most time.

Question 9

Define refactoring.

Answer 9

Refactoring of an application is the process of improving an apps internal structure (code) without affecting is external behavior (production/end users)

Question 10

When is it ideal to use a Rip-and-Replace migration strategy?

Answer 10

1. When you want to remove legacy technical debt/hardware
2. When current app does not meet business/technical goals.

Question 11

What are key cloud benefits that Lift and Shift migrations miss out on?

Answer 11

1. Horizontal scalability
2. Fine-graced/granular pricing
3. Highly managed services

Question 12

What are Lift and Shift migrations ideal?

Answer 12

1. Little/no business need for change.
2. Workloads can operate in target environment.

Question 13

What situations of Improve-and-move migrations best suited for?

Answer 13

1. When an apps architecture or infrastructure of an app is not supported in target environment.
2. When a major update to the workload is not necessary

Question 14

What are key considerations when migrating with a Improve-and-move strategy?

Answer 14

1. Long than lift and shift
2. App must be refactor in order to migrate
3. Requires upskilling
4. More time and effort of the life cycle of an app

Question 15

What key considerations are important with a Rip-and-replace strategy?

Answer 15

1. Time
2. Upskilling

Question 16

What are the four phases of a migration journey?

Answer 16

1. Assess
2. Plan
3. Deploy
4. Optimize

Question 17

What are 4 key benefits of Migrate for Compute Engine?

Answer 17

1. Continuous replication - of disk data from source VMs to GCP
2. No downtime - on transfers
3. Clone & test - Post migration testing w/ roll–back if necessary
4. GCP Console

Question 17

Which migration strategy is paired with Migrate for Compute Engine?

Answer 17

A lift and shift approach for VMs - w/ minor modifications from source to GCE environment.

Question 18

What is a key VP of Anthos?

Answer 18

Anthos uses a SINGLE CONTROL PLANE to manage kubernetes compute in hybrid scenarios.

Question 18

What is Anthos?

Answer 18

Its an application management platform used to manage HYRBD architectures (on prem (running VMWare) or w/ other CSPs)

Question 19

What is a GKE managed service mesh?

Question 19

What are Anthos core components?

Answer 19

1. Managed service Mesh
2. Migration
3. Serverless
4. Logging & monitoring
5. Service management
6. Cluster (multi), container, and infa management
7. Configuration management

Question 20

What is a GKE cluster? What are its two components?

Answer 20

GKE clusters are groups of VMs that run containerized applications

They are comprised of 1) control plane and 2) nodes

Question 21

What does a cluster control plane do? What is it comprised of?

Answer 21

Manages clusters state and manages workloads across cluster nodes.

Comprised of:
1. API manager
2. Scheduler (?)
3. Controll manager (?)

Question 22

What does a GKE node to?

Answer 22

Nodes are VMs that run containerized workloads. Contoles: 1. Container Runtime (such as Docker?) 2. Kublet agent - allows communication with the control plane.

Question 23

What is Migrate for Anthos (and GKE)

Answer 23

A tool to migrate and automatically convert workloads (VMs) into containers in GKE and Anthos.

Question 24

What supported source platforms does Migrate for Anthos (and GKE) work with?

Answer 24

1. GKE 2. Anthos 3. Anthos cluster on VMware 4. Anthos clusters on AWS

Question 25

What are 2 key benefits of Migrate for Anthos (and GKE)?

Answer 25

1. Use of auto-generated container artifacts 2. Offered at no charge and with no Anthos subscription required. Note: Charges for other GCP services remain -- compute, storage, network, etc.)

Question 26

What is Storage Transfer Service? What are its key 4 functions.

Answer 26

Allows you to quickly import online data into cloud storage. 1.Move/back up data to a cloud storage bucket from a) other CSPs or b) your on-prem 2. Move a cloud storage bucket from one bucket to another (eg, from staging to production) 3. Periodically move data at part of a analytical workflow or data processing pipeline 4. Cross-region replication - via data backups

Question 27

What is object data?

Answer 27

Used in Storage Transfer Service, it is a named repository containing object data -- such as images, video, documents, and code.

Question 28

What is Transfer Appliance?

Answer 28

A hardware appliance that you can use to securely migrate large volumes of data -- from hundreds of TB up to 1 petabyte (PB) Comes in two configurations: 1) 480 TB 2) 100TB

Question 29

Under what 2 conditions would you use Transfer Appliance? (exam)

Answer 29

1). When data is greater or = to 10 TB 2) When it would take more than 1 week to upload data over the network.

Question 30

What are key features of a Transfer Appliance?

Question 32

What is a container artifact?

Answer 32

Refers to the files and components that make up a container image. Images are standalone, executable packages that allow you to run applications.

Question 33

What are images? What are they comprised of?

Answer 33

Images are standalone executable packages that allow you to run programs. Comprised of app code, system libraries, system tools, and settings.