Oracle Cloud - The CIO's Guide to Oracle Products and Solutions - page 143

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Oracle Clou d
It should come as no surprise that Oracle is deep into all things “cloud.” As
shown in Figure 5.1, Oracle delivers a very broad selection of enterprise-
grade cloud solutions, including software as a service (SaaS), platform as
a service (PaaS), and infrastructure as a service (IaaS). Table 5.1 shows the
scale of Oracle's public cloud offerings. Virtually, all of their software is
available for use on their public cloud.
As shown in Table 5.2, Oracle also delivers end-to-end managed cloud
services across its broad portfolio of business applications, middleware,
database, and hardware technologies.
Finally, as shown in Table 5.3, Oracle provides an integrated set of prod-
ucts and services to support private cloud applications, platforms, and
infrastructure. The product and service set includes applications, life-
cycle management, and security.
From a technical perspective, much of Oracle's cloud offerings are based
on the Oracle Cloud File System. CloudFS, a storage management suite
developed by Oracle Corporation, consists of a cluster file system called
ASM Cluster File System (ACFS) and a cluster volume manager called
ASM Dynamic Volume Manager (ADVM).
ACFS is a standard-based POSIX (Linux, UNIX) and Windows clus-
ter file system with full cluster-wide file and memory-mapped I/O cache
coherency and file locking. ACFS provides direct I/O for Oracle database
I/O workloads. However, for better response time, ACFS implements indi-
rect I/O for general purpose files that typically perform small I/O. CloudFS
is designed to scale to billions of files and supports very large file and file
systems sizes (up to exabytes of storage).
CloudFS is built on top of Oracle Automatic Storage Management (ASM)
and Oracle clustering technologies to provide cluster volume and file ser-
vices to clients. ADVM and ACFS leverage ASM striping, mirroring, and
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