Storage-as-a-Service is relatively new. Today the main value proposition is as a cloud target for on-premise deployments of backup and archiving software. If you have a need to retain data for extended periods of time (1 year plus in most cases) tape is still the more cost effective option given it's low capital acquisition cost and removability. If you have long term data retention needs and you want to eliminate tape, that's where a cloud storage target comes in. Electronically vault that data to a storage-as-service provider who can store that data at cents per GB. You just can't beat the economies of scale these providers are able to achieve.
If you're a small business and you don't have the staff to implement and manage a backup solution or if you're an enterprise and you're looking for a PC backup or a remote office backup solution, I think it's worthwhile to compare the three year total cost of ownership of an on-premise solution versus backup-as-a-service.
In May, I blogged about NetApp's announced acquisition of deduplication pionneer, Data Domain. The announcement triggered an unsolicted counter-offer from EMC, followed by another counter from NetApp. But after a month of offers, counter-offers and regulatory reviews, EMC ultimately outbid NetApp with an all cash offer of $2.1 billion. I believe that Data Domain would have been a better fit in the current NetApp portfolio; it would have been easier for NetApp to reposition its current VTL as a better fit for large enterprises that still planned to leverage tape. It's also said that more than half of Data Domain's current employees are former NetApp employees so there would have been a clear cultural fit as well.
For $2.1 billion, EMC gets Data Domain's more than 3000 customers and 8000 installs but it also gets a product that in my opinion, overlaps with its current Quantum-based disk libraries, the DL1500 and DL3000. In Forrester inquiries and current consulting engagements, Data Domain is regularly up against the EMC DL1500 and DL3000. EMC will need to quickly explain to customers how it plans to position its new Data Domain offerings with its current DL family, both the Quantum- and Falconstor-based DLs as well as its broader data protection portoflio that includes Networker and Avamar - which also offer deduplication.