Introduction As AWS environments evolve, the need to migrate EC2 instances to different instance types is a common operational task. While migrating EBS-backed instances is relatively straightforward, migrating instance store-backed instances presents unique challenges due to their ephemeral storage characteristics. This guide provides a detailed walkthrough of the migration process…
Understanding the Japanese Grammar Pattern ～ものを (mono wo)
The Japanese grammar pattern ～ものを (mono wo) is one of those subtle expressions that adds significant emotional nuance to sentences. It expresses regret or disappointment about a missed opportunity or an action that contradicts expectations. Basic Structure The pattern follows this structure: Core Meaning At its heart, ～ものを expresses: Examples…
💰 AWS S3 Intelligent-Tiering — Smart Cost Optimization for Unpredictable Access Patterns
📘 What Is S3 Intelligent-Tiering? Amazon S3 Intelligent-Tiering is a storage class designed for data with unknown or changing access patterns. It helps you optimize storage costs automatically by moving data between different tiers based on how frequently it’s accessed. 🎯 You don’t need to analyze or manage lifecycle rules…
🗂️ AWS SysOps SOA-C02 Exam Prep: S3 Storage Classes (Standard, IA, Glacier)
📌 What Are S3 Storage Classes? Amazon S3 Storage Classes allow you to choose the most cost-effective storage option for your data — depending on how frequently you need to access it, how quickly, and your durability/availability requirements. ✅ Main idea:Balance cost, durability, availability, and retrieval time. 📖 Overview of…
🔐 AWS SysOps SOA-C02 Exam Prep: S3 Access Control (ACLs, Bucket Policies, IAM Policies)
📌 Why Access Control Matters in Amazon S3 Amazon S3 stores sensitive data — so controlling who can access what is critical. AWS offers three main access control mechanisms you need to know for the SysOps exam: Each method serves different purposes, with different levels of granularity and scope. 📖…
🗂️ AWS SysOps SOA-C02 Exam Prep: S3 Object Lock & Versioning
📌 What Is S3 Object Lock? Amazon S3 Object Lock is a feature that prevents objects from being deleted or overwritten for a fixed or indefinite amount of time. It’s designed to help you meet regulatory requirements (like WORM — Write Once, Read Many) and protect critical data. 📖 Object…
🔐 AWS SysOps SOA-C02 Exam Prep: Data Encryption Methods in Amazon S3
📌 Why Encrypt Data in Amazon S3? Although Amazon S3 provides secure storage, encryption adds another important layer of protection: In the AWS SysOps SOA-C02 exam, you’re often asked: 📖 Encryption Options in Amazon S3 When uploading data to S3, there are two encryption levels: 🛠 1️⃣ Server-side Encryption (SSE)…
🌐 Ôn thi AWS SysOps SOA-C02: Hiểu rõ về Egress-Only Internet Gateway
🎯 Mục tiêu bài viết 🧠 1. Egress-Only Internet Gateway là gì? Egress-Only Internet Gateway (EOIGW) là cổng ra Internet dành riêng cho IPv6, cho phép các instance trong subnet IPv6 gửi lưu lượng ra ngoài, nhưng không nhận kết nối từ ngoài vào. Nói cách khác: 🛠 2. Khi…
📘 Ôn thi AWS SysOps SOA-C02: Hiểu rõ về VPC Flow Logs
📌 Mục tiêu: Hiểu VPC Flow Logs là gì, cách triển khai, cách phân tích, và những câu hỏi thường gặp trong bài thi SOA-C02. 🌐 1. VPC Flow Logs là gì? VPC Flow Logs cho phép bạn ghi lại thông tin về lưu lượng IP ra vào các network…
VPC Endpoint trong AWS: Hành Trang Ôn Thi SOA-C02 Cho SysOps Administrator
Khi chuẩn bị cho kỳ thi AWS Certified SysOps Administrator – Associate (SOA-C02), một trong những khái niệm quan trọng bạn cần nắm vững là VPC Endpoint. Đây là thành phần cốt lõi trong mạng AWS, giúp quản trị viên hệ thống (SysOps) tối ưu hóa kết nối, tăng cường…