Advances, Systems and Applications
Table 1 Comparison of product offerings by Amazon EC2, Flexiscale and GoGrid
From: A constraints-based resource discovery model for multi-provider cloud environments
Amazon EC2 | Flexiscale | GoGrid | ||
|---|---|---|---|---|
Hardware Configuration Unit | Sizes: small, medium, large, extra-large, etc; Instance Types: standard, micro, high-memory, high-cpu, etc. | Server Unit: combination of different CPU, memory and storage. | Cloud Server Size based on RAM. | |
Operating System Type | Amazon Machine Images (AMI). | Standard Windows or Linux ISO images. | GoGrid Server Images. | |
Pricing Structure | Virtual Machine | On-demand Instance, Reserved Instance and Spot Instance pricing. | Server Units. | Based on the amount of RAM deployed (RAM hours) |
Storage | Storage attached to VM is free; Other storage offerings like Elastic Block Store (EBS) is charged based on provisioned storage and I/O request; Simple Storage Service (S3) is charged based on bucket location, redudancy durability and data transfer request. | Disk space is charged per month per GB of storage space allocated no matter it is attached to a server or not. | Additional storage space is charged by monthly usage. | |
Data Transfer | Based on availability zones and regions; No charge within same region. | Traffic on private VLAN is free; inbound and outbound traffic on public VLAN is charged. | Inbound transfer is free; outbound transfer is charged. | |