Information Technology Reference
In-Depth Information
Summary
The process of assigning storage capacity to servers and VMs in a cloud space is called
storage provisioning. In this chapter, we introduced some relevant terms related to stor-
age provisioning and explained at length cloud storage provisioning concepts such as
cloud storage, SAN storage, and cloud storage provisioning. The chapter also introduced
concepts of network configuration and network optimization in the context of the enter-
prise cloud setup.
We then explained the architectures of various major cloud storage service offerings,
such as EBS, Amazon's prime block-level cloud storage offering, and S3, Amazon's web-
scale storage system. We described in detail Apache's HDFS, which is a multipurpose highly
fault-tolerant and low-cost distributed file system designed to run over low-cost commodity
hardware.
The chapter also focused on the importance of cloud storage gateways and security
and privacy issues that come along as challenges with cloud storage. In the section “Cloud
Security and Privacy,” the focus was on preventing security and privacy issues and mitigat-
ing the effects of attack surface area. The chapter highlighted the importance of focusing
on cloud security issues such as access control policies, multitenancy, and PKI-enabled
authorization mechanisms used when designing a cloud infrastructure.
Chapter Essentials
Cloud Storage Cloud storage provides fault tolerance, better redundancy, and eventual
consistency models to guarantee data consistency. Durability of stored data is ensured
through versioning and atomicity of operations. Moreover, a cloud storage service provides
large cost savings because it eliminates the capital expenditure and maintenance costs.
Storage Provisioning Storage provisioning is defined as the process of moving data or
virtual data centers, applications, services, and VMs to the cloud. Storage provisioning
raises security concerns and problems such as isolation, unintended interactions, multi-
tenancy, and attack surface area. These concerns can be addressed using standard guide-
lines for provisioning storage service. Storage provisioning also offers data management
capabilities such as adding more storage, archiving, deduplication, and compression.
Cloud Storage Technologies Cloud storage technologies form the backbone of an organiza-
tional storage infrastructure. There are many storage technologies offered by various compa-
nies, and each technology serves a different set of requirements. Organizations should take
into account three important factors before deciding on a specific technology. These include
the type of data, the frequency of data access, and the required redundancy level. These fac-
tors help an organization think about attributes of their data sources to determine the best
possible fit.
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