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Amazon
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ENKI Computing Utility
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Reliability
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SLA compensation for 99.95% uptime requires user request and only amounts to 10% credit per month. Amazon
EC2 and S3 have experienced several severe failures just this year, and more last year.
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10x money-back guarantee for unplanned outages exceeding
AppLogic's 15-minute max restart time, which comes to approximately 3.5 nines
of reliability.
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Security
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Amazon instances are open to a variety of attacks. Protection requires installation of
firewall and antivirus software on each instance, which soaks up significant
CPU time.
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Active Intrusion Detection/ Intrusion Prevention firewalls
with antivirus available to protect against hacking, viruses and DOS attacks.
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Instance configuration
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Fixed ratio of RAM to CPU with limited instance configuration choices requires paying for resources you don't use.
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User-defined ratio of RAM to CPU and charges only on total
resource allocations allows balancing CPU and RAM across multiple instances
resulting in overall cost savings.
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Persistence
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No guaranteed instance storage persistence: you must provide
for application failover and redundancy since instance storage is lost on
failure or shutdown. Essentially
instance storage is only for scratchpad or temporary use since it can
disappear at any time. External Elastic Block Store slows access to critical persistent data. Extra instances are required to provide failover capability, increasing cost.
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Instances are guaranteed to be persistent. AppLogic closely models a highly reliable physical
data center. AppLogic handles
application failover automatically.
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Granularity
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Instance-level granularity of resource allocation
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Fine-grained resource allocation granularity
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IP addresses
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Dynamic - you have to code around changing IP addresses. IP address remaps are charged. Fixed IP addresses at $7.20/mo
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Static. IP addresses
beyond 5 cost $1/mo.
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Observability/ Controllability
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You provide your own monitoring.
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ENKI offers enterprise-grade monitoring at the
application and server levels.
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Locality/Predictability
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You don't know where your application is running: there is
little to no control over deployed data center architecture. Large scale storage only available at WAN
speeds. Latency between instances and to S3 can vary from 10s to 100s of milliseconds, with large jitter. Local resource zones only reduce latency and jitter, don't eliminate it.
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ENKI manages its own data centers and controls locality of
data and compute functions. Large
scale storage is available at direct-connect speeds, and all instances of your VPDC are on a local network with microsecond latencies, perfect for transaction oriented or telecommunications applications. (Not applicable for geographically distributed applications.)
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Bandwidth Pricing
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You are charged for both input and output bandwidth
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ENKI charges only the max of input and output bandwidth, resulting in potential significant savings.
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Bandwidth Quality
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No specification.
Highly variable due to random distribution of Amazon's data centers
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ENKI's data centers are located at carrier meet-me points such
as MAE West, with carefully selected carrier mix to ensure minimum ping and
transit times.
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Deployment
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You figure out how to deploy and manage your application. You have to understand Amazon's architecture to deploy your application.
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ENKI's experienced staff of IT professionals deploys your application in a virtual data center of your design, with full management available.
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Vendor Lock-In
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Amazon
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Running applications including an entire VPDC can be moved to
another AppLogic-based partner's data center with a single command.
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Support
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Forums and user groups. Paid support plans available, but only for Amazon's technology, not your applications and deployment.
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You call the phone and we answer, with guaranteed service
response times.
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Intended Audience
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Do-it-yourself IT professionals, short-term resource
consumers, organizations that have more free personnel time than cash.
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Organizations requiring enterprise-grade guaranteed service
levels without staffing investment, wishing to take advantage of ENKI's
extensive data center design expertise.
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