4
What’s Important About Managing
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Cloud Storage
The cloud computing model – with its ability to remotely “borrow” for a fee various
IT components through a specialized or open interface – offers an important new
technology approach, and storage is a natural fit. With its potential to allow
unprecedented resources and services scalability to be accessed through global IT
infrastructures and the Internet, cloud storage promises to reduce IT costs and lessen
GE UK COMMIT
complexity.Written by the members of the SNIA’s Cloud Technical Working Group.
ORA
OUD ST
An important part of the cloud model in general is the services are applied, and the implication that these services
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concept of a pool of resources that is drawn upon on need to be managed.
demand in small increments (smaller than what you would
typically purchase by buying equipment).This is made possible The SNIA Cloud Storage Technical Working Group (TWG)
by recent innovations in virtualization.The appeal of cloud created a SNIA Resource Domain Model, which gives a way
storage is similar to other cloud services: pay as you go, the to minimize this complexity and address the need of cloud
illusion of infinite capacity (elasticity), and the simplicity of storage to remain simple. By using the different types of
use/management. It is therefore important that any interface metadata discussed in the model for a cloud storage
for cloud storage support these attributes, while allowing for interface, we can create an interface that allows offerings to
a multitude of business cases and offerings, long into the meet the requirements of the data without adding undo
future. complexity to the management of that data.
Managing Data in the Cloud By supporting metadata in a cloud storage interface standard
Many of the initial offerings of cloud storage focused on a and proscribing how the storage and data system metadata is
kind of “best effort” quality of storage service with very little interpreted to meet the requirements of the data, we can
offering of additional data services for that data. In order to retain the simplicity required by the cloud storage paradigm,
address the needs of enterprise applications with cloud and yet still address the requirements of enterprise
storage, however, there is increasing pressure to offer better applications and their data.
quality of service and the deployment of additional data
services. Managing Data and Containers
There is no reason why the management of data and the
The danger, of course, is that cloud storage loses its benefit of management of containers should involve different paradigms.
simplicity and the abstraction of complexity as additional data As a result, the SNIA Cloud Storage TWG has proposed
extending the use of metadata from applying to individual
data elements into applying to containers of data as well.Thus
any data placed into a container essentially inherits the
metadata of the container it was placed into. Creating a new
container within an existing container would similarly inherit
its parent’s metadata settings. Of course the metadata can be
overridden at the container or individual data element level
as desired.
Even if the functional interface provided by the offering does
not support this type of metadata on individual data
Figure 4: Using the Resource Domain Model elements, it can still be applied to the containers even though
OCT 09 WWW.SNS-UK.CO.UK
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