Storage

Amazon EBS

Amazon EBS provides persistent block volumes for EC2 instances within an Availability Zone. It can hold model weights, indexes, checkpoints, and high-performance scratch data for self-managed inference hosts.

Key points

Volume types trade IOPS, throughput, capacity, and price
Snapshots store incremental backups in AWS-managed storage
A volume attaches within its Availability Zone under supported attachment modes

When to use it

Persist large model artifacts beside an EC2 inference server
Provide low-latency block storage for a self-managed vector index

Exam tips

Choose EBS for instance-attached block storage and EFS for concurrent file access across hosts
Separate durable artifacts from replaceable instance state and test snapshot restore time

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