Web Services access

At present, the focus of cloud computing, more storage is regarded as the most basic platform. To date, many cloud computing offerings are limited to a collection of CPU cores, with special memory allocations, low-speed storage, or some Internet-facing IP technology. Recently, there have been interesting new technologies for the cloud, especially for accessing Web Services so that access to storage is no longer limited to files or NFS mount points.

The "enterprise-class features" of popular data storage and management are continuously updated in the innovation of IT architecture. Storage architects realize these features are particularly important for business-critical and production applications, but these features are missing from current cloud computing. The goal of this white paper is to describe the essential elements of storage in enterprise cloud computing.

Cloud computing performance

Cloud computing performance costs. In a well-formed application, performance and cost are in balance. The key to this is to use the right technology to match the performance of your business applications, starting with the business language conversion into an IT model. Because of this transitional difficulty, companies typically stop at static IT infrastructure and can not cope with the changing performance needs of their business. Enterprise cloud computing provides a platform that better meets the changing performance needs.

In early cloud computing platforms, storage I / O generally had higher latency. This is because vendors have noticed that making cloud-computing data easier to access, they did not notice an increase in service levels related to performance, bandwidth, and IOPS. The delay is higher for two reasons: the mode and type of access, and the configuration of the storage distribution.

Access patterns include a combination of multi-layer protocols (such as SOAP, NFS, TCP, IP, and FCP) located on the OSI model's physical layer. Data access includes a shared physical service layer (such as Ethernet) and several protocol layers (such as SOAP or NFS) that generally generate more delay than a dedicated physical layer (such as FC). Most cloud computing platforms in the market include Internet data access, resulting in more data access latency.

For storage media, most cloud computing markets use SATA disks in RAID or JBOD configurations. Because SATA (which has been regarded as near-line disk for some time) generally has a performance that is slightly worse than that of an enterprise disk (generally referred to as an FC disk), the performance of a storage device is lower than that of an application.

Organizations that use the entire storage subsystem can not support the needs of more business-critical applications as you adopt the relatively low-bandwidth and high-latency access modes of low-performance storage media. As a result, this solution is generally only suitable for testing and development.

In contrast, enterprise cloud computing platforms need to provide more choices of different performance storage tiers. The storage platform should be able to use this change as performance requirements change, for example, from the test to the production environment. The ideal enterprise cloud computing storage should have multiple performance zones that can be tuned to provide the right level of I / O performance to business performance needs.

Finally, to meet the performance needs of enterprise high-end storage, cloud computing solutions must employ enterprise-class technologies that are higher than or are currently in use. The general use of FC SAN. In addition, how to use technology is as important as technology itself. In a system management environment, virtual machine configurations at the enterprise level must continue to deliver high performance.

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