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My Tech Blog (๋ณผ๋ฅจ)

1. The most likely reason your team member is unable to attach the EBS volume to an EC2 instance `in us-east-1b` is that EBS volumes are tied to a specific Availability Zone (AZ) upon creation. Since the volume was originally attached to an EC2 instance in us-east-1a, it is restricted to that AZ and cannot be directly attached to an instance `in us-east-1b`. us-east-1a์—์„œ์˜ EC2 ์ธ์Šคํ„ด์Šค๋ฅผ ์ข…๋ฃŒํ•˜์—ฌ, ์ด ์ธ์Šคํ„ด์Šค์—..
1. EBS Volume Types1-1. What is EBS Volume Typesโ–ถ EBS Volumes come in 6 typesgp2 / gp3 (SSD): General purpose SSD volume  that balances price and performance for a wide variety of workloads.io 1 / io 2 Block Express (SSD): Highest-performance SSD volume for mission-critical low-latency or high-throughput workloadsst 1 (HDD): Low cost HDD volume designed for frequently accessed, throughput-intens..
1. Amazon EBS ๋ธ”๋Ÿญ ์Šคํ† ๋ฆฌ์ง€ Ephemeral → EC2 Instance Store (์ธ์Šคํ„ด์Šค ์ข…๋ฃŒ ์‹œ ๋ฐ์ดํ„ฐ ์‚ฌ๋ผ์ง)Persistent → Amazon EBS (๋ธ”๋ก ์ €์žฅ), Amazon S3 (๊ฐ์ฒด ์ €์žฅ) ์•„๋งˆ์กด ์ €์žฅ์†Œ ์ค‘์— ๋ธ”๋Ÿญ ์ €์žฅ์†Œ(Amazon Block Storage)๋ผ๊ณ  ํ•˜๋ฉด ๋ณดํ†ต Amazon Elastic Block Store (EBS)๋ฅผ ์˜๋ฏธํ•œ๋‹ค. ๋ธ”๋ก ์Šคํ† ๋ฆฌ์ง€ ์„œ๋น„์Šค๋ผ๊ณ  ๋ถ€๋ฅด๊ธฐ๋„ ํ•œ๋‹ค. ๋ธ”๋ก ์Šคํ† ๋ฆฌ์ง€๋Š” ๋‹ค์‹œ ephemeral(ํœ˜๋ฐœ์„ฑ) ๊ณผ persistent(๋น„ํœ˜๋ฐœ์„ฑ) ์ €์žฅ์†Œ๋กœ ๋‚˜๋ˆŒ ์ˆ˜ ์žˆ๋‹ค. Ephemeral Storage (ํœ˜๋ฐœ์„ฑ ์ €์žฅ์†Œ)๋Š” EC2 ์ธ์Šคํ„ด์Šค๊ฐ€ ์ข…๋ฃŒ๋˜๋ฉด ๋ฐ์ดํ„ฐ๊ฐ€ ์‚ฌ๋ผ์ง€๋Š” ์ž„์‹œ ์ €์žฅ์†Œ์ด๋‹ค. AWS์—์„œ ๋Œ€ํ‘œ์ ์œผ๋กœ Instance Store๊ฐ€ ํœ˜๋ฐœ์„ฑ ์ €์žฅ์†Œ์ด๋‹ค..
1. EC2 Instasnce Storage Section1-1 .What's an EBS Volume?An EBS (Elastic Block Store) Volume is a network drive you can attach to your instances while they runIt allows your instances to persist data, even after their termination- EBS ๋ณผ๋ฅจ์„ ์‚ฌ์šฉํ•˜๋ฉด ์ธ์Šคํ„ด์Šค๊ฐ€ ์ข…๋ฃŒ๋œ ํ›„์—๋„ ๋ฐ์ดํ„ฐ๋ฅผ ์ง€์†ํ•  ์ˆ˜ ์žˆ๋‹ค. ์ธ์Šคํ„ด์Šค๋ฅผ ์žฌ์ƒ์„ฑํ•˜๊ณ  ์ด์ „ EBS๋ณผ๋ฅจ์„ ๋งˆ์šดํŠธํ•˜๋ฉด ๋ฐ์ดํ„ฐ๋ฅผ ๋‹ค์‹œ ๋ฐ›์„ ์ˆ˜ ์žˆ๋‹ค. They can only be mounted to one instance at a time (at the CCP level)- But some..
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