S3 storage classes (Standard, IA, Glacier) in AWS - Step-by-Step Execution

Process Flow - S3 storage classes (Standard, IA, Glacier)

Upload file to S3

↓

Choose storage class

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Standard

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Immediate

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access, high

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durability

↓

Pay standard

↓

storage fee

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Retrieve anytime

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Data lifecycle and cost optimized

Files uploaded to S3 are assigned a storage class that affects cost and access speed. Standard is for frequent access, IA (Infrequent Access) is cheaper for infrequently accessed data, Glacier is for archival with retrieval delays.

Execution Sample

AWS

Upload file 'photo.jpg' to S3 bucket
Choose storage class: Standard
Upload completes
File available immediately

Upload file 'backup.zip' to S3 bucket
Choose storage class: Glacier
Upload completes
File archived, retrieval takes hours

This shows uploading files to S3 with different storage classes affecting availability and cost.

Process Table

Step	Action	Storage Class	Cost Impact	Access Speed	Result
1	Upload 'photo.jpg'	Standard	Standard cost	Immediate	File stored and accessible immediately
2	Upload 'backup.zip'	Glacier	Lowest cost	Hours delay	File archived, retrieval delayed
3	Access 'photo.jpg'	Standard	No extra cost	Immediate	File retrieved instantly
4	Access 'backup.zip'	Glacier	Retrieval fee applies	Hours delay	File retrieval initiated, wait required
5	Upload 'logs.tar'	IA	Lower than Standard	Immediate	File stored, immediate access with retrieval fee
6	Access 'logs.tar'	IA	Retrieval fee applies	Immediate	File retrieved immediately
7	End	-	-	-	All files stored with chosen classes and costs

💡 All files uploaded with selected storage classes; access speed and cost vary accordingly

Status Tracker

Variable	Start	After Step 1	After Step 2	After Step 5	Final
photo.jpg Storage Class	None	Standard	Standard	Standard	Standard
backup.zip Storage Class	None	None	Glacier	Glacier	Glacier
logs.tar Storage Class	None	None	None	IA	IA
photo.jpg Access Speed	N/A	Immediate	Immediate	Immediate	Immediate
backup.zip Access Speed	N/A	N/A	Hours delay	Hours delay	Hours delay
logs.tar Access Speed	N/A	N/A	N/A	Immediate	Immediate

Key Moments - 3 Insights

Why does Glacier storage class have a delay when accessing files?

Glacier is designed for archival storage with very low cost but retrieval takes hours, as shown in execution_table rows 2 and 4.

Is accessing a file in Standard storage class free and immediate?

Yes, Standard class files are immediately accessible without extra retrieval fees, as seen in rows 1 and 3.

What happens if you choose IA storage class for a file?

IA offers lower storage cost with retrieval fees and immediate access, demonstrated in rows 5 and 6.

Visual Quiz - 3 Questions

Look at the execution_table, what is the access speed for 'backup.zip' after upload?

A Hours delay

B Minutes delay

C Immediate

D No access

💡 Hint

Check row 2 and 4 in execution_table for 'backup.zip' access speed

At which step does the file 'logs.tar' get uploaded with IA storage class?

A Step 1

B Step 5

C Step 3

D Step 2

💡 Hint

Look at execution_table row 5 for 'logs.tar' upload

If 'photo.jpg' storage class changed to IA, how would its access speed change?

A Change to Minutes delay

B Change to Hours delay

C Remain Immediate

D No access

💡 Hint

Compare access speeds for Standard vs IA in variable_tracker

Concept Snapshot

S3 Storage Classes:
- Standard: high cost, immediate access
- IA (Infrequent Access): lower cost, immediate access with retrieval fees
- Glacier: lowest cost, hours delay for retrieval
Choose based on how often you access data and cost needs.

Full Transcript

This visual execution shows how files uploaded to AWS S3 can be assigned different storage classes: Standard, IA, and Glacier. Each class affects cost and access speed. Standard offers immediate access at higher cost. IA reduces storage cost but incurs retrieval fees. Glacier is cheapest but retrieval takes hours. The execution table traces uploading and accessing files with these classes, showing cost impact and access delays. Variable tracking shows how storage class and access speed change per file. Key moments clarify why Glacier delays access and how IA balances cost and fees. The quiz tests understanding of access speeds and upload steps. This helps beginners see how S3 storage classes affect file availability and cost.