• EBS are network drives, they are good but have limited performance
• If you need high performance hard disk - use EC2 instance store
• Gives you better i/o performance
• EC2 instance store lose their storage if they are stored (ephemeral)
• USE IT WHEN - Good for buffer/ cache/ scratch data/ temporary content
• Risk of data loss if hardware fails
• Backup and replication are your responsibility
• i3 has Instance store attached to it, and have very high IOPS