EC2 Instance Storage Options

A Complete Guide to Amazon EC2 Storage Types and Best Practices

Instance Store Volumes

Key Characteristics

  • Physically attached to host computer
  • Temporary block-level storage
  • Data lost when instance stops/terminates
  • High I/O performance

Use Cases

  • Temporary data processing
  • Buffer/cache storage
  • High-performance workloads
  • Scratch space requirements

EBS Volumes

Volume Types

  • General Purpose (gp2/gp3)
  • Provisioned IOPS (io1/io2)
  • Throughput Optimized (st1)
  • Cold HDD (sc1)

Features

  • Persistent independent storage
  • Automatic replication
  • Snapshot capability
  • Encryption support

EBS Volume Types in Detail

General Purpose SSD

gp3:

  • Baseline: 3,000 IOPS
  • 125 MB/s throughput
  • Size: 1 GiB - 16 TiB

gp2:

  • 3 IOPS/GB
  • Max 16,000 IOPS
  • Size: 1 GiB - 16 TiB

Provisioned IOPS SSD

io2:

  • Up to 64,000 IOPS
  • 1,000 MB/s throughput
  • 99.999% durability

io1:

  • Up to 64,000 IOPS
  • 1,000 MB/s throughput
  • 99.9% durability

Throughput Optimized HDD

st1:

  • Max 500 IOPS
  • 500 MB/s throughput
  • Size: 125 GiB - 16 TiB
  • Streaming workloads

Cold HDD

sc1:

  • Max 250 IOPS
  • 250 MB/s throughput
  • Size: 125 GiB - 16 TiB
  • Infrequent access

Storage Options Comparison

Feature Instance Store EBS
Persistence ❌ ✅
Performance Very High Variable
Snapshots ❌ ✅
Cost Included Per GB
Flexibility Limited High

EBS Management

Volume Operations

# Create volume aws ec2 create-volume --volume-type gp3 --size 100 --availability-zone us-west-2a # Attach volume aws ec2 attach-volume --volume-id vol-1234567890abcdef0 --instance-id i-1234567890abcdef0 --device /dev/sdf # Create snapshot aws ec2 create-snapshot --volume-id vol-1234567890abcdef0 --description "Daily backup"

Storage Monitoring

CloudWatch Metrics

  • VolumeReadOps
  • VolumeWriteOps
  • VolumeQueueLength
  • VolumeThroughputPercentage

Performance Monitoring

# Get volume status aws ec2 describe-volume-status --volume-ids vol-1234567890abcdef0 # Enable detailed monitoring aws ec2 monitor-instances --instance-ids i-1234567890abcdef0

Performance Optimization

  • Choose appropriate volume type
  • Monitor IOPS usage
  • Use RAID for increased performance
  • Pre-warm EBS volumes
  • Use enhanced networking

Backup Strategy

  • Regular EBS snapshots
  • Use automated backup tools
  • Test recovery procedures
  • Cross-region backup copies
  • Tag resources properly

Cost Management

  • Delete unused volumes
  • Right-size EBS volumes
  • Use appropriate volume types
  • Monitor snapshot lifecycle
  • Consider reserved capacity