Cloud vendors forecast rapid adoption
Cloud storage not suitable for all data, however
By
Jon Brodkin
,
Network World
, 10/14/2008
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Remotely accessible cloud storage isn't appropriate for all data types, but it's poised to attract a large amount of IT spending over the next few years.
That was the prediction Monday from Patrick Harr, founder and CEO of online storage vendor Nirvanix, one of several speakers at Storage Networking World to address the emerging cloud storage market.
"You will see a spending shift from what I call the traditional box model to more of an on-demand service model going forward,"
Harr told attendees at the conference in Dallas. (HP, OnStor and FalconStor are among vendors unveiling products at Storage Networking World.)
When Harr began raising money for Nirvanix, the notion of the "cloud" was barely talked about, he said. Nirvanix didn't even
mention the word "cloud" when it came out of stealth mode with a press release in September 2007. Although Nirvanix now uses the word to market its online storage service, Harr said the buzzword's ubiquity
makes it difficult to cut through the hype and figure out exactly what cloud storage is and is not.
Cloud storage is not suitable for all data types, he noted, because it introduces some latency. "Every data has a storage
type," Harr said. "Cloud storage is not meant to replace [storage-area network] storage." (Compare storage products.)
Simply making storage available over the Web does not make it a cloud service, he said. The analyst firm Gartner has defined
cloud computing as "a style of computing where massively scalable IT-related capabilities are provided 'as a service' using
Internet technologies to multiple external customers."
Cloud storage, Harr said, should be scalable from gigabytes to exabytes while using a single global namespace; load balancing
will allow resources to be shifted to different geographic locations based on demand. Cloud storage should also be easy to
connect to through Web services APIs or standard storage protocols; feature a fully redundant infrastructure; and be 80% to
90% less expensive than building one's own storage, he said.
Nirvanix offers cloud storage over the Web through its Storage Delivery Network, which is similar to Amazon's S3 storage service.
Nirvanix on Monday announced general availability for a storage software offering called CloudNAS, an add-on to the Storage
Delivery Network that lets users connect systems to Internet-based storage nodes via NFS, CIFS or FTP.
The most common use cases include storing large digital libraries, integration of online storage into devices or applications,
and backup and archival, Harr said. "We're seeing a lot of excitement in the archival and backup space," he said.
IBM executives also spoke about the cloud Monday, saying cloud storage should provide both an infinitely scalable pool of storage
and a simple way for users to access it. If built effectively, the incremental cost of managing newly added resources should
be close to zero, said Stephen Edel, IBM's storage portfolio management program director.
Rather than offer its own cloud storage service, IBM is focusing on delivering the hardware and guidance necessary for service
providers to build externally available clouds, as well as helping enterprise IT shops build internal clouds behind their
firewalls.
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