Page 277 - Cloud computing: From paradigm to operation

Framework and requirements for cloud computing 1

Block storage client Filesystem client Database/Table client Object storage client Other client
(e.g., XAM client)

CRUD Other
FC. iSCSL CIFS. NFS. JDBC. ODBC. (e.g., XAM
FCOE. LUNs WebDAV XML operations via
HTTP VIM)

The accesss sub-layer
User identification Application interfaces Network access
and access equipment

The presenting sub-layer
Backup disaster
SAN service cloud NAS service cloud recovery service cloud

The infrastructure sub-layer
Infrastructure monitor
cluster

Virtual volume File access interfaces: CIFS. Virtual volume Block service interfaces such
management NFS. WebDAV management as FC, iSCSI, FCOE, LUNs

NAS DFS Backup SAN BC Backup
Storage Backup Storage Backup
infrastructure infrastructure infrastructure infrastructure
Y.3510(13)_FI.1

Figure I.1 – Cloud storage reference model
NOTE – The interfaces and protocols shown in Figure I.1 are examples used for illustrative purposes.

Cloud storage is the cooperating operation of multiple storage devices, multi-applications and multi-services.
Not every storage system can be called cloud storage. A cloud storage system can provide functionalities
such as a storage area network (SAN), network attached storage (NAS), data backup and disaster recovery.

As shown in Figure I.1, the cloud storage reference model is composed of three sub-layers which are
described in the following clauses.

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