Cloud Computing Storage
Cloud storage means "the storage of data
online in the cloud," where in a company data is stored in and accessible
from multiple distributed and connected resources that comprise a cloud.
Cloud Storage is a service that allows to save
data on offsite storage system managed by third-party and is made accessible by
a web services API.
Cloud storage can provide the benefits of
greater accessibility and reliability; rapid deployment; strong protection for
data backup, archival and disaster recovery purposes
Cloud Storage devices are mainly divided into
two categories: Block storage and File storage
Block storage devices offer raw storage to the
clients. This raw storage can be partitioned to create volumes
File Storage Devices offers storage to clients
in form of files, maintaining its own file system. This storage is in the form
of Network attached storage (NAS).
Cloud storage Classes
Cloud storage is categorizes into two main categories:
Storage: Here the storage is preconfigured for the consumer. The consumer
cannot format nor the consumer can install own file system or change drive properties
Storage: It offers online storage
space on demand. Managed cloud storage system presents what appears to the user
to be a raw disk that the user can partition and format.
Creating cloud storage system:
The cloud storage system stores multiple copies
of data on multiple servers and in multiple locations. If one system fails,
then it only requires to change the pointer to stored object's location.
To aggregate storage assets into cloud storage
systems, the cloud provider can use storage virtualization software, Storage
It creates a virtualization layer that fetches
storage from different storage devices into a single management system
It can also manage data from CIFS and NFS file
system over the Internet
storage containers offer high performance cloud storage systems. Logical Unit Number (LNU) of device,
files and other objects are created in virtual storage containers
Issues with Cloud Storage System
Storing the data in cloud is not that simple task. Apart
from its flexibility and convenience, it also has several challenges faced by
the consumers. The consumers require ability to:
Know and restrict the physical location of the
Provision additional storage on demand.
Administrator access control over data.
Have access to a documented process for surely
disposing of data storage hardware.
Verify how data was erased?