EFS
EFS (Amazon Elastic File System) is a storage system used in cloud computing, specifically with Amazon Web Services (AWS). Think of it like a very large, flexible hard drive that can grow or shrink automatically based on needs. Companies use EFS to store and share files across multiple cloud computers, similar to how office workers might share files on a company network drive. It's particularly useful for big organizations that need their cloud applications to share the same files, like when multiple servers need access to the same website content or company data.
Examples in Resumes
Implemented EFS storage solutions for high-traffic web applications
Reduced storage costs by migrating company data to EFS and Amazon EFS
Designed and managed EFS infrastructure supporting multiple AWS regions
Typical job title: "Cloud Engineers"
Also try searching for:
Where to Find Cloud Engineers
Online Communities
Professional Resources
Job Search Resources
Example Interview Questions
Senior Level Questions
Q: How would you design a highly available system using EFS?
Expected Answer: A strong answer should explain how to set up EFS across multiple zones for reliability, backup strategies, and how to ensure applications can keep running even if one location has problems.
Q: What considerations would you make when migrating large amounts of data to EFS?
Expected Answer: Should discuss planning for transfer speeds, cost considerations, security measures, and ensuring minimal disruption to existing services during the migration.
Mid Level Questions
Q: What are the main differences between EFS and other AWS storage options?
Expected Answer: Should be able to explain when to use EFS versus other storage types like S3 or EBS, focusing on use cases and cost implications.
Q: How do you monitor and maintain EFS performance?
Expected Answer: Should discuss basic monitoring tools, common performance metrics, and simple troubleshooting approaches.
Junior Level Questions
Q: What is EFS and what is it commonly used for?
Expected Answer: Should be able to explain that EFS is a shared file storage system and give basic examples of its use, like sharing files between multiple servers.
Q: How do you create and mount an EFS file system?
Expected Answer: Should demonstrate basic knowledge of setting up EFS through the AWS console and connecting it to servers.
Experience Level Indicators
Junior (0-2 years)
- Basic AWS console operations
- Simple EFS setup and configuration
- Basic file system operations
- Understanding of cloud storage concepts
Mid (2-4 years)
- EFS performance optimization
- Security configuration
- Backup and recovery procedures
- Integration with other AWS services
Senior (4+ years)
- Complex storage architecture design
- Cost optimization strategies
- High availability implementation
- Enterprise-scale deployment management
Red Flags to Watch For
- No hands-on AWS experience
- Lack of basic networking knowledge
- No understanding of security best practices
- Unable to explain basic storage concepts
- No experience with Linux systems
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