I like the way you phrase the question, as normally I hear networked storage including SAN and NAS benefits and...
justification centered on business benefits tied to data and storage management. In other words, the usual rhetoric is that data and storage management can be improved by using SAN and/or NAS. Benefits to data storage management that are driving SAN and NAS adoption include enhanced connectivity, device sharing, data sharing with NAS, shared backup, potential for performance improvements and resiliency. Networked storage in general supports scaling of availability, performance and capacity compared to direct attached architectures.
There are the arguable added complexities of a networked storage environment using SAN or NAS compared to a DAS environment. The added complexities of a networked storage environment compared to DAS need to be evaluated on a scaling basis. For example, a couple of servers with SAS or SATA direct attached storage for a file server compared to several dozen servers accessing a Windows file or NAS server or compared to hundreds of servers accessing a shared iSCSI or Fibre Channel SAN.
Look at the number of servers you have, how much storage do you need and how much data needs to be shared. Also take a look at what your application and data availability and performance requirements are. Factor these among other attributes to decide if you need DAS or some form of networked storage.
Dig Deeper on SAN technology and arrays
Related Q&A from Greg Schulz
Service provider outages should be a warning to customers that keeping data safe in the cloud is a shared responsibility.continue reading
When cloud durability is added to the mix, cloud providers are able to tout a high number of nines of availability.continue reading
Cloud storage can be less expensive from a cost-per-gigabyte perspective, but it's important not to lose sight of other benefits as a value ...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.