Provisioned IOPS EBS volumes are SSD based. From the product page (http://aws.amazon.com/ebs/details/ http://aws.amazon.com/ebs/details/): ""Backed by Solid-St

Provisioned IOPS EBS volumes are SSD based. From the product page (http://aws.amazon.com/ebs/details/ http://aws.amazon.com/ebs/details/): ""Backed by Solid-State Drives (SSDs), Provisioned IOPS volumes support up to 30 IOPS per GB which enables you to provision 4000 IOPS on a volume as small as 134 GB.""