Page 139 - Cloud computing: From paradigm to operation

Framework and requirements for cloud computing 1

I.7 Efficient data storage management

Title Efficient data storage management
Description As shown in Figure 1, DSF service provider efficiently manages data to support better storage
access performance and to reduce management burden. Tiering is a technique to fulfil
efficient data management. By organizing tiered caches, frequently accessed files are stored in
high speed cache. While access files are rarely stored in a low speed cache. Cached files are
stored on corresponding data storages by managed API.
As shown in Figure 2, a DSF service customer saves a same file on a single virtual volume. To
avoid waste of data storage capacity DSF service provider performs a de-duplicate data
operation. For example, when a file is stored, data replication checking is accomplished. As the
result of the checking, a file is stored. If a same file is already stored, the file is managed by
data operation metadata.
Role/Sub-role DSF service customer (CSC:CSU)
DSF service provider (CSP:SFP)
Figure (optional)

Figure 1 – Tiered caches for access performance

Figure 2 – De-duplication data for saving storage capacity

131